The appeal of UV irradiation as a disinfection strategy is well established. Unlike chlorination, ultraviolet treatment inactivates a broad spectrum of pathogenic microorganisms without adding chemicals to the water, without producing harmful disinfection by-products, and without inducing the kind of microbial resistance that worries public health officials. Water produced by desalination systems and wastewater reclamation plants cannot be supplied directly for consumption; it must pass through a final disinfection stage before it is safe to drink. UV reactors fill that role in a growing number of facilities worldwide. But the performance of any such reactor depends on a delicate interplay between radiation transport and fluid dynamics: microbes that zip through shadowed zones too quickly receive an insufficient dose, while engineers who try to slow the water down often pay for it in pressure losses and pumping costs. The new study attacks exactly this trade-off by reshaping the reactor’s interior.

The research team focused on a tubular UV reactor with an outer tube diameter of 89 millimeters and a central UV lamp diameter of 20 millimeters, a configuration typical of annular UV disinfection reactors used for desalinated and reclaimed water streams. Rather than modifying the entire device, the investigators isolated a 60-centimeter-long central segment and subjected only that test section to geometric modification, keeping the upstream and downstream sections smooth so that fully developed flow conditions would be guaranteed at the inlet and outlet of the design region. Within this segment, a corrugated pattern was applied to the inner surface of the outer tube. The corrugation geometry was fully characterized by three independent parameters: the inward radial depth of the corrugation, designated as parameter a, and two axial dimensions of each corrugation element, the groove length b and the ridge length c. The parameter ranges, with depths of 7, 14, and 21 millimeters and groove and ridge lengths of 30, 60, and 90 millimeters, were chosen to balance geometric feasibility within the fixed reactor diameter, manufacturability constraints, and a controlled number of corrugation elements along the design section.

To explore the design space systematically, the researchers adopted a 13-run, three-factor Box-Behnken design of experiments, comprising 12 edge points and one center point. Each configuration was simulated under identical conditions: a constant flow rate of 25 gallons per minute and a UV lamp power of 40 watts. The simulations were performed in COMSOL Multiphysics version 6.2, which solved both the turbulent flow field and the optical radiation field. The hydrodynamics were modeled using the Reynolds-averaged Navier-Stokes equations coupled with the standard k-epsilon turbulence model, while the propagation of ultraviolet rays through the absorbing water medium was described by geometrical optics, governed by Hamilton’s equations for ray position and wave vector. UV absorption by the water was incorporated through the imaginary part of the refractive index, tied directly to the measured spectral transmittance of the medium. The resulting fields were then exported to MATLAB, where Lagrangian particle tracking was used to follow 1,000 passive, massless fluid particles through the reactor, integrating their trajectories with a fourth-order Runge-Kutta scheme and a fixed time step of 10^-4 seconds. Each particle accumulated UV dose by integrating the local fluence rate along its path, and the response variable was defined as the histogram-based mean cumulative UV dose of the particles reaching the reactor outlet, weighted across dose bins 5 millijoules per square centimeter wide.

Before running the optimization, the team subjected their numerical framework to rigorous validation. A grid independence study, performed on the most geometrically complex configuration, compared five meshes of increasing density and showed that the relative difference in predicted UV dose between the two finest meshes fell below 4 percent, while the pressure drop changed by only about 2.9 percent. The final adopted mesh contained 739,008 cells, with local refinement near the corrugated wall surfaces and around the lamp, and its quality metrics, including skewness and condition-number measures, remained within acceptable ranges. The radiative model was then validated against an established MPSS-based reference model by comparing the circumferentially averaged UV fluence rate as a function of radial distance, achieving an average deviation below 5 percent across the entire radial domain. The hydrodynamic component was separately validated against experimental velocity measurements from a classical backward-facing step flow study, with the predicted streamwise velocity profile matching the measured data closely at the sampled location. Together, these checks gave the team confidence that the coupled flow-radiation-particle framework was physically trustworthy before any design conclusions were drawn.

The results revealed both the promise and the subtlety of corrugated geometries. Across the 13 simulated cases, the mean cumulative UV dose ranged from 38.927 millijoules per square centimeter in the worst configuration to 51.366 millijoules per square centimeter in the best, an improvement of nearly 32 percent. Notably, the boundary configurations that performed poorly also tended to exhibit the highest pressure loss ratios, reaching 17.2 percent above the reference case, indicating that extreme geometric combinations can simultaneously degrade UV effectiveness and increase hydraulic resistance. The central design point of the Box-Behnken matrix, with all three parameters at intermediate levels, offered a vivid picture of the underlying physics: particle trajectories and velocity contours showed strong acceleration and directional redistribution near the entrance of the corrugated section, the formation of secondary flow structures and recirculation zones, and enhanced radial transport that extended the time particles spent in the irradiated domain. These features promote dose accumulation, but the intensified mixing near the geometric protrusions also generates additional shear stress, which explains the moderate rise in pressure loss observed in some configurations.

The statistical treatment of the simulation results was equally rigorous. A second-order quadratic response surface model was fitted to the data, incorporating linear, quadratic, and two-factor interaction terms for the three coded geometric variables. Analysis of variance confirmed that the overall quadratic model was statistically significant at the 95 percent confidence level, with an F-statistic of 15.2 and a corresponding p-value of 0.0234. The fitted coefficients revealed strong positive linear contributions from the corrugation depth and the groove length, tempered by negative quadratic terms that captured the diminishing returns and eventual penalties of pushing these dimensions too far. This structure reflects a physical reality that reactor designers have long suspected but rarely quantified: corrugations help by redistributing flow and lengthening exposure paths, but excessive depth or overly long features can create shadow zones, overly fast channeling, or excessive drag. The response surface approach makes these competing effects explicit and, crucially, allows the design space to be searched mathematically rather than by trial and error.

The broader context of this work is a field that has been converging on the same lesson from many directions. Previous studies have shown that baffles can improve hydraulic mixing and enhance pathogen removal by up to 70 percent in UV systems; that ring baffles in UV reactors can boost disinfection performance by 36 to 69 percent by aligning flow patterns with UV radiation; that serpentine and helical UV-C LED reactor geometries can substantially raise fluence and microbial inactivation; and that optimized reflector modules can increase UV fluence by factors of up to 30 at some distances from the source. Computational fluid dynamics has increasingly been paired with Monte Carlo simulations, polynomial chaos expansions, and multi-objective genetic algorithms to push reactor design forward. What distinguishes the new study is its focus on continuous internal geometric modification, the corrugation itself, rather than on discrete add-on elements or lamp arrangements, and its use of a structured design of experiments combined with response surface methodology to quantify exactly how corrugation dimensions shape residence time distribution and cumulative UV dose. The authors note that the role of corrugation dimensions in shaping these coupled phenomena has not been comprehensively quantified before, making this configuration one that had not previously been probed.

The implications extend well beyond the specific reactor studied. The required pumping power across the 13 configurations ranged only from about 43 to 50.4 watts, meaning that significant gains in radiative performance could be achieved with only moderate hydraulic penalties. For decentralized and household-scale treatment systems, and for rural communities that rely on off-grid or low-energy solutions, the difference between a reactor that wastes pump energy and one that extracts maximum disinfecting power from each watt of lamp input can determine whether the technology is viable at all. The same principles apply to larger municipal installations, where pressure drop translates directly into operational cost. And because the study deliberately selected an optimization objective, the mean cumulative UV dose, that is organism-independent, the design guidance is broadly applicable, even though the researchers did not quantify organism-specific log reduction in this study; the survival analysis was instead framed around a nominal inactivation constant representative of MS2 bacteriophage, a common surrogate in UV reactor evaluation.

There are, of course, limitations to acknowledge. The study is entirely computational, based on one-way coupling between the flow-radiation solution and the particle tracking, with turbulent dispersion of particles neglected and motion governed by advection in the mean flow field. Real reactors face additional complications, including fouling driven by water quality, sleeve aging, and the non-ideal hydraulics that have long plagued scale-up efforts in water treatment. The authors themselves frame their contribution as offering practical design guidance rather than a finished product, and the validated numerical framework is the real deliverable: a tool that can now be used to interrogate other geometries, other flow rates, and other optical conditions without fabricating each candidate in metal. Still, the message to the field is clear and likely to resonate: when it comes to UV water disinfection, the geometry of the reactor is not a passive container but an active optical and hydraulic instrument, and shaping it deliberately, corrugation by corrugation, can squeeze substantially more protection out of the same lamp.

A groundbreaking study recently published in the prestigious Green Energy & Environment journal reveals an ingenious approach to overcoming these challenges through nanoconfinement engineering of metal-organic framework (MOF) derived hollow heterojunctions. Spearheaded by a collaborative research team from Fuzhou University, Harvard University, MIT, and Sichuan University, the work introduces a novel bimetallic sulfide heterojunction photocatalyst composed of Co₉S₈ and Ag₂S. This meticulously designed material architecture paves the way for unprecedented photocatalytic efficiency and robustness in degrading tetracycline under ultraviolet irradiation.

Central to the remarkable photocatalytic performance of this novel system is its hollow polyhedral morphology. This unique structure functions as a microscopic light concentrator, enabling photons to undergo multiple internal reflections and scatterings within the cavity. Such enhanced photon confinement substantially elevates light harvesting capabilities, thereby increasing the generation of energetic charge carriers. Concurrently, the presence of abundant mesopores within the hollow framework facilitates expedited diffusion of pollutant molecules to active catalytically reactive sites, optimizing degradation kinetics.

The interface of Co₉S₈ and Ag₂S within the heterojunction forms a spontaneously generated internal electric field, a phenomenon elucidated through rigorous density functional theory (DFT) simulations. These calculations reveal a charge redistribution pattern where electrons migrate from Co₉S₈ to Ag₂S until electrochemical equilibrium is established. This built-in electric field acts strategically to direct the trajectory of photogenerated electrons, mitigating their premature recombination with holes—a ubiquitous issue that plagues conventional photocatalysts and limits their efficiency.

Experimental evaluations validate the exceptional photocatalytic prowess of the Co₉S₈/Ag₂S heterojunction. Under controlled ultraviolet light exposure, the system achieved a staggering 99.3% degradation efficiency of tetracycline in merely 30 minutes. The observed kinetic rate constant, calculated to be 0.152 min⁻¹, signifies an improvement of approximately fivefold relative to pristine Ag₂S catalysts. These findings attest not only to accelerated reaction kinetics but also to the robustness of the material’s interfacial charge separation and light absorption capabilities.

Beyond ideal laboratory conditions, the catalyst maintains its superior performance when deployed in complex real-world water environments, such as tap and lake water. Experimental results demonstrate sustained degradation efficiencies exceeding 90%, underscoring the material’s resilience against matrix interferences common in natural waters. Moreover, after six successive catalytic cycles, the photocatalyst retained over 75% of its initial activity, with X-ray diffraction (XRD) analysis confirming the preservation of its crystalline integrity, thereby endorsing its long-term operational stability.

Direct probing of reactive oxygen species via advanced electron spin resonance spectroscopy elucidated the mechanistic underpinnings of the photocatalytic degradation process. Both highly reactive hydroxyl radicals (·OH) and superoxide radicals (·O₂⁻) were unambiguously detected, confirming their pivotal roles in the oxidative decomposition of the antibiotic molecules. This dual-radical pathway is instrumental in achieving complete and rapid mineralization of tetracycline under UV illumination.

To comprehensively benchmark the devised heterojunction’s performance, the scientific team constructed an innovative six-dimensional radar plot comparing critical metrics such as cycling stability, product yield, synergistic interfacial effects, light absorption breadth, cost-efficiency, and catalytic activity. The bimetallic Co₉S₈/Ag₂S heterostructure distinctly outperformed monometallic analogues across all evaluated parameters, substantiating the manifestation of a pronounced “1+1>2” synergistic effect that transcends the additive contributions of individual components.

This research exemplifies a rational and integrative design strategy embracing MOF self-templating, engineering of hollow nanostructures, precise interfacial heterojunction assembly, and nanoconfinement effects to craft photocatalysts of extraordinary efficiency and durability. Such insights lay a foundational blueprint for advancing next-generation photocatalytic materials tailored for sustainable water purification technologies, aligning with urgent global environmental imperatives.

The reported findings epitomize a significant leap in photocatalyst engineering, promising scalable and eco-friendly remediation avenues for hazardous water contaminants. The integration of fundamental understanding and innovative nanofabrication techniques heralds transformative prospects in environmental chemistry and photocatalytic science, paving the way for future breakthroughs in pollutant degradation and energy conversion systems.

The interdisciplinary collaboration and synergy among institutions spanning China and the United States epitomize cutting-edge global cooperation aimed at addressing one of the most pressing environmental challenges. As the demand for clean water intensifies worldwide, such pioneering efforts underscore the power of scientific innovation to deliver pragmatic, impactful solutions that safeguard ecosystems and public health.

Contact with the project’s lead researcher, Professor Gao Xiao, reveals a commitment to further refining these nanostructured catalysts towards broadened light spectrum utilization and enhanced applicability in diverse contaminant scenarios. The convergence of computational modeling, materials science, and environmental engineering in this work exemplifies the holistic approach necessary to unlock the full potential of photocatalysis as a sustainable remediation technology.

Subject of Research: Not applicable
Article Title: Nanoconfinement Engineering of MOF-Derived-Hollow-Heterojunctions Towards Enhanced Photocatalysis
Web References: DOI link
Image Credits: Gao Xiao

Keywords

Environmental chemistry, Materials science, Photocatalysis, Metal-organic frameworks, Heterojunctions, Nanoconfinement, Antibiotic degradation, Water purification, Bimetallic sulfides, Electron-hole recombination, Reactive oxygen species, Sustainable technology

A transformative concept known as the ‘spatial–temporal dynamic dual-electrocatalytic cascade’ has been introduced, marking a paradigm shift in electrochemical water treatment. This innovative approach centers on a meticulously engineered coplanar dual-electrocatalytic zone-structured electrode, integrated seamlessly within a membrane electrode assembly. The ingenuity of this design lies in its ability to orchestrate a compact, highly efficient reaction environment that sustains the in situ generation and sequential transformation of molecular oxygen through a cascade of reactions, culminating in the formation of highly reactive hydroxyl radicals (•OH). Remarkably, this entire process unfolds without the need for supporting electrolytes, breaking free from the constraints that traditionally encumber the Fenton system.

At the heart of this innovation is the carefully crafted electrode, which spatially segregates the distinct electrocatalytic zones required for the sequential reduction steps. This architecture permits the continuous conversion of molecular oxygen (O₂) first into hydrogen peroxide (H₂O₂), followed by its further reduction into the potent oxidizing species, •OH. The sophisticated coupling of these zones within a coplanar configuration enables stable, vigorous reaction kinetics while maintaining the system’s compactness and operational simplicity. By eliminating the dependence on extrinsic reagents and conductive additives, the technology exemplifies a reagent-free and electrolyte-free modality that is both environmentally benign and cost-effective.

Extensive experimental evaluations underscore the unparalleled efficacy of this system in treating an array of stubborn organic pollutants. Four major categories of recalcitrant contaminants were subjected to the treatment process, with results revealing removal efficiencies exceeding an impressive 98%. This level of performance not only attests to the robustness of the dual-electrocatalytic cascade strategy but also signals a new horizon in tackling pollutants that have long resisted conventional degradation techniques. The system’s capacity to sustain such high removal rates across diverse classes of compounds highlights its potential as a universal solution for complex water remediation challenges.

Energy consumption remains a crucial factor in determining the viability of water treatment technologies on a commercial scale. Here, the dual-electrocatalytic zone electrode exhibits remarkable energy efficiency, achieving a reduction of approximately 69.3% in energy usage compared to conventional dual-cathode systems. This dramatic decrease is attributed to the synergy between the spatial–temporal dynamics of the cascade reactions and the optimized electrode design, which collectively minimize energy losses and enhance reaction selectivity. Such advancements contribute significantly to lowering the carbon footprint associated with water purification processes, further aligning this technology with global sustainability goals.

Crucially, the device’s adaptability extends beyond idealized laboratory conditions. Performance assessments conducted in five distinct water matrices, encompassing a range of conductivity and compositional profiles, demonstrate its broad-spectrum applicability. Notably, the system’s ability to treat real chemical pharmaceutical wastewater without necessitating intricate pretreatment steps stands out as a game-changing attribute. The successful reduction of total organic carbon content in these challenging effluents confirms its potential to seamlessly integrate into existing industrial wastewater treatment frameworks, simplifying operations while enhancing pollutant removal outcomes.

The innovation’s potential impact is amplified by its facilitation of decentralized water treatment systems. Traditional electro-Fenton technologies often require stringent operational environments and infrastructure, limiting their deployment in remote or resource-limited settings. By contrast, this reagent-free and electrolyte-free electrocatalytic cascade system is inherently suited for such contexts, where low-conductivity water matrices prevail. The compactness and operational independence of the integrated electrode assembly enable flexible, on-site applications without the logistical burdens of chemical reagent management. This flexibility opens avenues for widespread use in rural communities, emergency response scenarios, and decentralized industrial facilities.

The scientific community recognizes that translating laboratory advancements into real-world practices often hinges on system stability and longevity. Encouragingly, the dual-electrocatalytic zone electrode exhibits excellent operational stability over prolonged usage periods, maintaining its catalytic activity and structural integrity. This durability stems from the robust materials employed in the electrode design and the intrinsic nature of the cascade reaction mechanism, which minimizes catalyst degradation. Such resilience ensures that the system can operate continuously without frequent maintenance or costly replacements, a critical factor in achieving economically viable water treatment solutions.

From a mechanistic perspective, the molecular oxygen reduction pathway facilitated by the dual zones provides insightful advances in electrocatalysis. Traditionally, the electrochemical reduction of oxygen involves competing pathways, often resulting in incomplete or inefficient conversion processes. By spatially zoning the electrocatalytic reactions and finely tuning temporal dynamics, this system exerts unprecedented control over intermediate species, steering reactions toward the desired cascade to •OH radicals. This precision fosters a reaction environment that capitalizes on the high oxidizing potential of hydroxyl radicals to achieve thorough organic matter degradation while suppressing unwanted side reactions.

The integrated system’s compactness is further enhanced by its incorporation into a membrane electrode assembly, which harmonizes mass transfer and electron transport processes. This assembly facilitates efficient reactant infiltration and product removal, optimizing the reaction kinetics and sustaining steady-state conditions favorable for continuous operation. The membrane also acts as a physical barrier, preventing cross-contamination between the dual-electrocatalytic zones and preserving the spatial selectivity essential for cascade reaction fidelity. Such design innovations showcase the critical interplay between materials engineering and electrochemical design in advancing water purification technologies.

Beyond its immediate application to water treatment, the principles demonstrated by this spatial–temporal dual-electrocatalytic cascade concept may catalyze broader innovations across electrochemical sciences. Its methodology of integrating spatially distinct yet temporally coordinated reaction zones introduces new dimensions for the design of multifunctional electrochemical reactors. This paradigm could inspire adaptations in fields such as energy storage, sensors, and chemical synthesis, where reaction selectivity and efficiency are paramount. By showcasing a compelling blend of fundamental electrocatalytic understanding and pragmatic engineering, this work sets a benchmark for next-generation electrochemical system designs.

Environmental and economic sustainability are intertwined in the drive toward advanced wastewater remediation technologies. By circumventing the use of hazardous chemical additives and reducing energy demands, this newly developed technology mitigates the ecological footprint of organic pollutant degradation processes. Moreover, its deployment can reduce downstream treatment costs and pollution liabilities associated with reagent handling. Collectively, these benefits position the dual-electrocatalytic cascade system as a transformative tool aligned with circular economy principles and sustainable environmental stewardship.

Looking forward, scaling this technology from laboratory prototypes to full-scale applications will require comprehensive evaluations under diverse operational scenarios. Factors such as electrode fabrication scalability, system integration with existing treatment plants, and long-term environmental impacts merit detailed investigation. Nonetheless, the foundational advances presented not only demonstrate the technical feasibility but also highlight compelling incentives for industry adoption. Stakeholders across water management sectors are likely to view this innovation as a beacon for sustainable, efficient, and versatile water purification solutions in an era marked by escalating water quality challenges.

In conclusion, this novel coplanar dual-electrocatalytic zone-structured electrode system represents a watershed moment in electrochemical water treatment. Its sophisticated spatial–temporal cascade of oxygen reduction reactions unlocks highly reactive hydroxyl radicals without the environmental burdens of chemical reagents. With remarkable pollutant degradation efficacy, significant energy savings, and broad applicability to complex wastewater streams, it heralds a new chapter in reagent-free and electrolyte-free water purification. This innovation promises to accelerate the practical deployment of advanced electrochemical technologies, ensuring safer, cleaner water for communities and ecosystems worldwide.

Subject of Research: Electrochemical water purification via oxygen reduction cascade reaction.

Article Title: Molecular oxygen cascade reduction to •OH via coplanar dual-electrocatalytic zone achieving electrolyte-free water purification.

Article References:
Miao, C., Wang, Z., Chen, K. et al. Molecular oxygen cascade reduction to •OH via coplanar dual-electrocatalytic zone achieving electrolyte-free water purification. Nat Water (2026). https://doi.org/10.1038/s44221-026-00606-z

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s44221-026-00606-z

Waterborne pathogens pose one of the greatest threats to global public health, especially in regions where safe drinking water access is limited. Conventional disinfection methods, such as chlorination or UV sterilization, often suffer from drawbacks including the formation of harmful byproducts, high energy consumption, and the inability to eliminate certain resistant microorganisms. Photocatalysis, which uses light to activate a catalyst that destroys contaminants, offers a promising route to address these challenges. However, many photocatalysts either require artificial light sources or exhibit sluggish disinfection rates, limiting their practical deployment.

The research team led by He, Zhang, Liu, and their collaborators has tackled these issues head-on by engineering a sophisticated 2D/2D heterojunction between phosphorene—a single or few-layer black phosphorus analog known for its exceptional charge carrier mobility—and bismuth oxyiodide (BiOI), a semiconductor with excellent visible-light absorption properties. The so-called S-scheme heterojunction design enables a synergistic interaction between the two materials, enhancing charge separation efficiency and maximizing the generation of reactive oxygen species (ROS) critical for pathogen inactivation.

A defining feature of this system is the strategic assembly of phosphorene and BiOI nanosheets into an intimate vertical stacking arrangement, ensuring a large interfacial contact area. This morphology facilitates rapid electron transfer across the interface while preserving the redox potentials necessary to produce highly reactive hydroxyl radicals and superoxide anions under sunlight illumination. Such an optimized pathway suppresses the recombination of photogenerated electron-hole pairs—a major limiting factor in traditional photocatalysts—and thereby boosts the catalytic activity manifold.

Photocatalytic tests were conducted under real sunlight conditions, mimicking practical deployment scenarios. Remarkably, the 2D/2D phosphorene/BiOI S-scheme heterojunction achieved near-complete bacterial inactivation in under 60 seconds, a significant leap beyond previously reported photocatalytic disinfection speeds. This rapidity ensures that treated water can be disinfected on-demand without relying on prolonged exposure times or energy-intensive processes, greatly enhancing feasibility for remote or off-grid applications.

The researchers also performed extensive mechanistic investigations using spectroscopic and electrochemical techniques to unravel the charge transfer dynamics governing the disinfection process. The S-scheme heterojunction effectively separates electrons and holes into distinct spatial domains, with electrons residing on phosphorene and holes on BiOI, thus maintaining strong oxidative and reductive sites that generate ROS capable of swiftly lysing bacterial cell walls and disrupting microbial metabolism.

An additional advantage of this heterojunction design lies in its remarkable stability. The photocatalyst maintains its structure and activity over multiple cycles of water treatment without significant degradation, addressing a common issue where photocatalysts deteriorate upon prolonged exposure to oxidative environments or light irradiation. This durability underscores the system’s promise for real-world applications where long-term operational reliability is a must.

Importantly, the material synthesis protocols employed to create the heterojunction are scalable and utilize earth-abundant elements. The use of phosphorene, while historically considered challenging due to its air sensitivity, has been optimized through encapsulation strategies that protect the nanosheets from oxidation while preserving their desirable electronic properties. Meanwhile, BiOI is well-known for its facile synthesis, enhancing the overall practicality of the approach.

Beyond just bacterial disinfection, the researchers anticipate that this type of S-scheme heterojunction system can be adapted to target a wide range of contaminants, including viruses, organic pollutants, and antibiotic-resistant strains. The modularity of the 2D components allows for tunable band structures and surface chemistries, potentially enabling customized photocatalysts tailored for specific water quality challenges.

The environmental implications of this work are vast. By harnessing abundant and clean solar energy, the photocatalyst offers a sustainable path to safe drinking water without the carbon footprint associated with conventional treatment methods. This aligns notably with United Nations Sustainable Development Goals (SDGs), particularly SDG 6, which aims to ensure availability and sustainable management of water and sanitation for all.

From a broader materials science perspective, this study exemplifies the power of combining emerging 2D nanomaterials into heterostructures that synergistically enhance functional properties beyond those of individual constituents. It opens new avenues in photocatalysis, photovoltaics, and optoelectronics, emphasizing how interface engineering at the atomic level can unlock unprecedented performance.

The researchers envision next steps involving the integration of this photocatalytic system into portable water purification devices and the development of reactors that optimize light harvesting and fluid dynamics for industrial-scale operation. Efforts to investigate the photocatalyst’s efficacy against a complex microbiome in natural water sources will also be critical for translating laboratory successes into practical solutions.

Moreover, the fundamental insights gained into charge separation and reactive species generation within S-scheme heterojunctions provide a blueprint for designing future materials that address diverse environmental and energy challenges, such as solar-driven CO2 reduction and nitrogen fixation.

Ultimately, this pioneering work sets a new benchmark for photocatalytic water disinfection, demonstrating that rapid, solar-powered killing of pathogens without harmful residues is achievable. It paves the way for safer, cleaner water on demand, potentially transforming public health outcomes worldwide and marking a significant stride toward sustainable water treatment technologies.

As the global demand for clean water surges alongside increasing pollution and climate concerns, innovations like the 2D/2D phosphorene/BiOI S-scheme heterojunction provide a compelling example of how cutting-edge nanomaterials research can be harnessed to meet urgent societal needs. The near-instantaneous disinfection under everyday sunlight conditions heralds a future where access to potable water is more equitable, resilient, and environmentally responsible.

This breakthrough also raises exciting questions about the limits of photocatalytic performance and the extent to which material design can be tailored to achieve near-perfect charge transfer and catalytic turnover rates. With further refinements and interdisciplinary collaboration, researchers anticipate that photocatalysis will become a cornerstone of low-energy, high-efficiency water treatment methods globally.

The publication detailing this innovative work appeared in Nature Communications (2026), providing comprehensive experimental validation, theoretical underpinning, and proof-of-concept demonstrations. It represents a milestone in the ongoing pursuit to harness sunlight for clean water and highlights the transformative potential of nanotechnology-enabled environmental solutions.

Subject of Research: Photocatalytic water disinfection using 2D/2D phosphorene/BiOI heterojunction under sunlight

Article Title: 2D/2D phosphorene/BiOI S-scheme heterojunction for subminute photocatalytic water disinfection under real sunlight

Article References:
He, D., Zhang, K., Liu, C. et al. 2D/2D phosphorene/BiOI S-scheme heterojunction for subminute photocatalytic water disinfection under real sunlight. Nat Commun (2026). https://doi.org/10.1038/s41467-026-69101-z

Image Credits: AI Generated

The study begins by addressing the challenges posed by conventional water treatment methods, which often fall short when it comes to pharmaceuticals. Traditional filtration processes may not effectively capture molecules as small and ubiquitous as ibuprofen, leading to concerns about residual concentrations that can affect ecosystems and drinking water supplies. This necessitates the exploration of more advanced materials that can facilitate improved adsorption capacities, thus ensuring a safer environment for both humans and wildlife.

Polyaniline, a conducting polymer, has gained popularity in recent years due to its remarkable properties, including conductivity and environmental stability. Coupled with reed biochar—an organic material derived from decomposed plant matter—the researchers aimed to create a composite that leverages the advantageous features of both components. The addition of acids during the impregnation process introduces functional groups that enhance the material’s ability to bind with ibuprofen molecules. This aspect is pivotal because it increases the overall efficiency of ibuprofen adsorption.

In their experimental setup, Zhou and colleagues meticulously tested various parameters that could affect the adsorption capacity of the composite material. Factors such as contact time, temperature, and pH levels were examined to identify optimal conditions for maximum ibuprofen removal. The preliminary results indicated a significant increase in adsorption performance that exceeded expectations, providing valuable insights into the feasibility of using this composite material as a filtration medium.

One of the standout findings of this research was the role of temperature in the adsorption mechanism. As the temperature increased, the kinetic energy of ibuprofen molecules also rose, allowing for greater interaction with the adsorbent material. This observation could lead to the development of temperature-modulated systems that enhance the efficiency of wastewater treatment in various climatic conditions. It opens up avenues for future research that could delve into the interplay between temperature and other environmental factors.

Moreover, the intricate mechanisms underlying the enhanced adsorption are explained in detail. The composite material’s surface characteristics and porosity were crucial in shaping how ibuprofen molecules interacted with the adsorbent. Characterization techniques demonstrated that the composite possessed a significantly higher surface area compared to its individual components. This increased surface area provides more binding sites for ibuprofen, effectively capturing larger quantities of the contaminant from water before it can re-enter the environment.

The researchers also explored the longevity and stability of the polyaniline/acid-impregnated reed biochar composite. Understanding the material’s durability in various aqueous conditions is critical for practical applications. Preliminary tests indicated that the composite maintained its structural integrity even after prolonged exposure to fluctuating environmental conditions, making it a promising candidate for real-world filtration systems.

This study importantly contributes to the overarching discourse on green chemistry. By utilizing renewable resources such as reed biochar, the research advocates for sustainable practices that minimize environmental impact. The synthesis of the composite also implies that we could transition away from more hazardous materials often used in water treatment, moving towards a bio-based approach that calls for fewer natural resources and potentially lowers costs.

Furthermore, implications stretch beyond just ibuprofen. The findings of this research inspire further inquiries into the applicability of this composite treatment for a broader range of pharmaceuticals and personal care products that are increasingly found in water sources. It could potentially serve as a springboard for initiatives aimed at creating multifunctional, bio-based adsorbents that tackle multiple contaminants simultaneously.

The release of ibuprofen into the environment raises concerns not merely for water quality but also for cases of bioaccumulation in aquatic organisms. Such bioaccumulation can lead to toxicity and disruption of marine ecosystems. By uncovering ways to enhance the removal of ibuprofen from water sources, Zhou and his team’s research plays a pivotal role in addressing a pressing issue that affects the sustainability of our water resources.

Overall, the findings presented in this research signify a promising advance in the field of environmental chemistry. Creating an efficient and sustainable solution to pharmaceutical contamination can bridge current gaps in wastewater treatment technology, ensuring cleaner water for future generations. The importance of adopting greener technologies in addressing water pollution cannot be understated; thus, the insights gained from this study pave the way for more sustainable approaches in water treatment research.

In light of the findings, various stakeholders—including environmental policy makers, water utilities, and researchers—should take heed of these advancements. The importance of collaboration between scientific research and practical application cannot be overlooked; it is essential for implementing real solutions to our most pressing environmental challenges. This ongoing conversation surrounding water treatment and pollution underscores a collective responsibility to safeguard our natural resources while embracing innovation and sustainability.

This research not only discusses the benefits of enhanced adsorption mechanisms but also serves as a call to action. Future research directions should explore how to scale up the production of the composite material for widespread application, ultimately influencing policies aimed at water quality standards. This study could act as a catalyst for broader investigations into how advanced materials can make tangible impacts on public health and environmental safety across the globe.

The innovative work by Zhou, Li, and Shi demonstrates a proactive approach to tackling water pollution, underscoring the significance of continued research into new methodologies that challenge status quo practices. Their efforts highlight an emerging paradigm in environmental science—one that relies on cross-disciplinary insights, creative engineering of materials, and a spirit of sustainability that could ultimately reshape how we address one of the most pressing issues of our time.

Subject of Research: Enhanced adsorption of ibuprofen using polyaniline/acid-impregnated reed biochar composite.

Article Title: Insight into the enhanced adsorption behavior and mechanism of ibuprofen from water on polyaniline/acid-impregnated reed biochar composite.

Article References:

Zhou, Z., Li, Z., Shi, C. et al. Insight into the enhanced adsorption behavior and mechanism of ibuprofen from water on polyaniline/acid-impregnated reed biochar composite.
Front. Environ. Sci. Eng. 19, 135 (2025). https://doi.org/10.1007/s11783-025-2055-y

Image Credits: AI Generated

DOI: 10.1007/s11783-025-2055-y

Keywords: Ibuprofen, water treatment, adsorption, polyaniline, biochar, environmental sustainability.

Fenton chemistry, a well-known advanced oxidation process, traditionally relies on the generation of highly reactive hydroxyl radicals through the catalytic decomposition of hydrogen peroxide. These radicals are potent agents for breaking down organic pollutants in water, yet the conventional Fenton reaction often suffers from limitations including low selectivity and the production of toxic byproducts. By directing the oxidation pathways toward polymerization, rather than complete breakdown, this new methodology holds promise for creating harmless polymeric networks that can sequester contaminants or facilitate their removal.

Central to this advancement is the exploitation of electric fields generated by structural defects within catalytic materials. These defects, often perceived as undesirable, have been ingeniously repurposed as localized electric fields that modulate reaction pathways at the molecular level. The researchers demonstrated that by tailoring these defect-induced fields, it became possible to bias the oxidation process, favoring polymer formation over typical radical reactions that lead to mineralization or fragmentation.

This defect engineering approach has significant implications. It moves beyond the traditional paradigm where defects are seen merely as performance detractors and repositions them as active catalysts of chemical selectivity. Such control over reaction specificity is critical in water treatment applications where byproduct toxicity and process stability are paramount concerns. The work reveals an elegant synergy between material science and environmental chemistry that could inspire a new class of catalytic materials optimized to promote desirable transformations.

The experimental design utilized advanced spectroscopic techniques and electron microscopy to characterize the defects and their associated electric fields at the nanoscale. These measurements confirmed a strong correlation between defect density, field intensity, and the resulting reaction pathway. The team’s careful manipulation of defect structures enabled fine-tuning of oxidation kinetics, balancing radical generation and polymerization rates to achieve optimal pollutant sequestration.

In practical terms, this mechanism opens the door to creating water treatment catalysts that not only degrade harmful substances but also convert them into stable, polymeric matrixes that are easier to handle, recycle, or dispose of. This contrasts sharply with conventional treatment methods that often produce small, persistent, and sometimes more toxic fragments requiring further processing. The defect-directed electric fields thus act as molecular guides, orchestrating a dance of electrons and radicals toward greener outcomes.

Moreover, the sustainability aspect of this research is noteworthy. Polymerization processes driven by defect-enhanced electric fields can potentially reduce the dose of hydrogen peroxide and other chemicals traditionally necessary in Fenton reactions. This reduction translates into lower operational costs, decreased chemical waste, and less environmental footprint. It exemplifies a design philosophy where material imperfections are transformed into assets yielding economic and ecological benefits.

The implications extend beyond water treatment. Understanding how defect-induced electric fields influence redox chemistry could impact diverse fields such as energy storage, environmental sensing, and catalysis for green synthesis. By controlling reaction selectivity at such a fundamental level, new chemical transformations may be unlocked, advancing the development of sustainable technologies across the chemical sciences.

One of the remarkable aspects of this study is the interdisciplinary nature of the research. It integrates concepts from solid-state physics, surface chemistry, and environmental engineering, demonstrating how collaborative approaches can yield innovations that transcend traditional disciplinary boundaries. This fusion of expertise has allowed for the precise tailoring of catalyst properties at atomic and electronic levels.

The researchers also highlight the potential for scalability and practical deployment. Unlike specialized, highly engineered catalysts that are difficult to produce at scale, defect engineering leverages common materials and uses relatively straightforward processing techniques to induce desired defect structures. This approach holds promise for widespread adoption in municipal and industrial water treatment facilities.

Additionally, the study provides a paradigm shift in how researchers might approach catalyst design. Instead of solely focusing on creating defect-free, pristine surfaces, scientists are encouraged to embrace and manipulate disorder to achieve novel catalytic behaviors. The concept of defect-induced electric fields as a tool for pathway control could stimulate future material innovation aimed at tackling a myriad of environmental challenges.

In conclusion, this provocative research from Liu et al. not only elucidates a new mechanism for directing Fenton-like oxidation but also sets the stage for the development of catalysts with unprecedented control over chemical reactions. By turning defects into functional features, the team has paved the way for more sustainable, efficient, and selective processes in water purification and beyond. This discovery underscores the transformative power of defect engineering in advancing green chemistry and environmental technologies.

As global water scarcity and pollution crises intensify, such innovative strategies become imperative. The ability to finely direct oxidative pathways with defect-engineered catalysts holds the key to cleaner water systems and healthier ecosystems. This work embodies the future of sustainable water treatment, where scientific ingenuity meets real-world impact through the subtle manipulation of material imperfections.

The research community awaits the continuation of this exciting avenue, including scaling up experiments, exploring other defect types, and integrating these catalysts into existing water treatment infrastructures. The promising results from this study beckon a new era of defect-guided chemistry that could redefine sustainability in chemical processes and environmental management worldwide.

Subject of Research: Sustainable water treatment via defect-induced electric field effects directing Fenton-like oxidation pathways toward polymerization.

Article Title: Defect-induced electric field effects direct Fenton-like oxidation pathways towards polymerization for sustainable water treatment.

Article References:
Liu, B., Yang, C., Huang, X. et al. Defect-induced electric field effects direct Fenton-like oxidation pathways towards polymerization for sustainable water treatment. Nat Commun 16, 10963 (2025). https://doi.org/10.1038/s41467-025-65966-8

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41467-025-65966-8

Pollution of water bodies due to industrial and agricultural waste has emerged as a critical global challenge, threatening ecosystems and human health alike. Toxic metals, such as lead, mercury, and cadmium, are particularly concerning due to their long-lasting presence in the environment and their ability to bioaccumulate. Traditional methods of remediation often fall short in efficacy and are cost-prohibitive, necessitating the urgent exploration of new techniques. The researchers’ study tackles this issue head-on, exploring a synergistic approach that leverages advanced materials science to tackle the problem effectively.

The incorporation of nanomaterials into water treatment processes offers promising benefits due to their high surface area and reactivity. These materials can enhance the interaction between contaminants and the adsorbent, significantly improving the effectiveness of the filtration system. Nanomaterials, such as carbon nanotubes and metal oxide nanoparticles, exhibit superior adsorption capacities and can facilitate rapid and efficient removal of heavy metals, a feature that is crucial for successful water purification strategies.

In this study, the researchers devised a filtration system that uses a composite of carefully selected nanomaterials integrated with biomass. This biocomposite not only serves as an effective adsorbent but also promotes environmental sustainability by utilizing organic waste. Materials like agricultural residue or other biomass types were chosen for their ability to capture heavy metals while generating less environmental impact compared to traditional synthetic filters. This biowaste approach not only adds an eco-friendly dimension to the filters but also ensures that the production of these filters can be viable on a commercial scale.

The experiment involved collecting contaminated water samples and subjecting them to the newly developed filtration system. Various tests were conducted to ascertain the performance of the filters, with metrics being evaluated to determine the removal efficiency of different toxic metals. Impressively, the results indicated that the biocomposite filters achieved removal efficiencies that surpassed many traditional methods. The team recorded significant reduction in metal concentrations, showcasing the potential for this technique in real-world applications.

The implications of this technology are immense, particularly in regions facing severe water contamination issues due to industrial processes or agricultural runoff. The ability to clean water effectively and affordably can lead to better health outcomes for local communities and ecosystems that rely on these water sources. By providing a sustainable solution that integrates both high-tech and low-tech elements, this research paves the way for more accessible water treatment options, especially in developing nations where resources are often limited.

Moreover, the findings of this study contribute to a broader understanding of nanobiocomposites in environmental applications. As challenges related to water pollution continue to escalate, scholars and practitioners in the field are compelled to innovate continuously. The combination of nanotechnology with renewable resources positions this research at the forefront of environmental science, encouraging further exploration and refinement of these composite materials.

Looking ahead, the potential for commercialization of these biocomposite filters appears promising. The underlying principles of the research lend themselves well to the development of scalable filtration systems that can be deployed in various settings, including industrial effluent treatment, community water supply systems, and emergency response scenarios where rapid water purification is essential. The researchers foresee collaborations with industry partners to bring this technology from the lab to the market.

The study also presents valuable insights into the interactions between different nanomaterials and biomass, forming a basis for future research endeavors. Understanding the mechanisms of adsorption at the molecular level will enable scientists to manipulate and optimize these materials further, leading to enhanced performance characteristics. This pursuit holds the potential not only to improve the efficacy of the filters but also to expand their applicability across a wider range of contaminants, beyond just toxic metals.

The research team recognizes that, while the current study marks a significant advancement, further validation in diverse environmental conditions is essential. Future research directions may include field trials that assess long-term effectiveness, as well as the development of methods for regenerating the filters without loss of performance. Additionally, exploring the economic feasibility of large-scale production will be fundamental in ensuring the accessibility of the technology.

Ultimately, this research signifies a pivotal step in the ongoing battle against water pollution. By synergistically combining the strengths of nanomaterials and biomass, the authors have not only addressed a pressing environmental issue but have also opened new discussions around sustainable and innovative engineering practices. As the world seeks effective solutions to combat the looming water crisis exacerbated by climate change and industrial expansion, such interdisciplinary research will become increasingly important.

In conclusion, the study elucidates how creativity in material science can lead to unprecedented advancements in environmental technology. As nations look toward achieving water security and promoting public health, innovations such as the nanomaterial and biomass combination filter could become essential elements in global strategies for clean water accessibility. The fusion of cutting-edge science and environmental stewardship exemplifies the type of transformative thinking necessary to address one of the most significant challenges of our time.

Subject of Research: Removal of toxic metals from contaminated water using nanomaterial and biomass filters.

Article Title: Removal of toxic metals in contaminated water by adsorption using filters with a combination of nanomaterial and biomass.

Article References:

Blanc, L.R., Maia, L.F.O., de Araújo, C.A.O. et al. Removal of toxic metals in contaminated water by adsorption using filters with a combination of nanomaterial and biomass.
Environ Monit Assess 197, 1107 (2025). https://doi.org/10.1007/s10661-025-14526-0

Image Credits: AI Generated

DOI:

Keywords: Water purification, nanomaterials, biomass, heavy metals, environmental remediation, filtration technology, sustainable solutions.

The innovative study, carried out by Chen, Weng, Chu, and their collaborators, addresses some of the most pressing challenges in environmental chemistry and renewable energy. Traditionally, the production of hydrogen peroxide—a versatile oxidizing agent widely used in industrial bleaching, disinfection, and environmental management—relies on energy-intensive chemical processes, including the anthraquinone method, which involves multiple complex steps and significant carbon footprints. Moreover, conventional water treatment techniques often grapple with inefficiencies, excessive chemical usage, and the inability to degrade recalcitrant pollutants effectively.

By designing nitrogen-rich, heterocyclic COFs, the research team has expertly engineered a molecular platform that ushers in a dual-functionality paradigm. These COFs boast an intricate architecture, where nitrogen atoms are strategically embedded within the heterocyclic linkers, enhancing electron density and facilitating efficient light absorption, charge separation, and reactive oxygen species generation during photocatalysis. The result is an unprecedented enhancement in H₂O₂ photosynthesis efficiency under visible light irradiation, while these frameworks concurrently catalyze the degradation of organic pollutants directly in contaminated water.

Delving deeper into the molecular design, the researchers employed a bottom-up synthetic strategy to construct highly crystalline, porous COFs characterized by extended π-conjugated systems and robust covalent bonds that confer remarkable stability in aqueous environments. The nitrogen heterocycles incorporated—such as triazine and pyrimidine moieties—act as electron donors and acceptors, fostering optimized charge transfer pathways that minimize recombination losses of photogenerated electron-hole pairs. These optimized electronic properties are crucial for boosting photocatalytic reactions wherein electrons reduce dissolved oxygen to generate H₂O₂, while holes facilitate the oxidative breakdown of water contaminants.

Extensive characterization through techniques including X-ray diffraction, solid-state nuclear magnetic resonance, and high-resolution electron microscopy confirmed the periodicity, pore size distribution, and chemical composition of the synthesized COFs. Ultraviolet-visible absorption spectra revealed strong light-harvesting capability across a broad spectral range, congruent with visible solar illumination, which is paramount for practical photocatalytic applications. Electrochemical analyses demonstrated notable improvements in photocurrent responses and charge transfer dynamics relative to non-nitrogenated analogues, underscoring the critical role of nitrogen heterocycles in augmenting photoreactivity.

Functionally, the COFs were integrated into a pilot system to demonstrate their efficacy in real-world scenarios. Under simulated solar irradiation, the materials exhibited remarkable H₂O₂ production rates, exceeding those of conventional photocatalysts by several folds. Crucially, the synthesized H₂O₂ was directly employed to degrade a spectrum of organic pollutants commonly found in wastewater, including phenolic compounds and pharmaceuticals, achieving significant reduction in contaminant concentrations without additional chemical additives. This in situ generation and utilization model not only simplifies water treatment protocols but also curtails secondary pollution associated with external oxidant dosing.

The researchers also performed kinetic studies and isotopic labeling experiments to elucidate the underlying reaction mechanisms. Their findings confirmed that the nitrogen heterocycles act as active sites for molecular oxygen adsorption and activation, thereby facilitating two-electron reduction pathways to selectively produce H₂O₂ rather than undesired byproducts such as hydroxyl radicals. Simultaneously, photogenerated holes oxidize the organic pollutants, achieving synergistic pollutant degradation and H₂O₂ accumulation. This dual catalytic activity represents a breakthrough in photocatalytic system design, promising scalable and sustainable solutions for environmental remediation.

Importantly, the COFs demonstrated exceptional recyclability and chemical stability over extended operational cycles under aqueous and illuminated conditions, a longstanding hurdle in photocatalyst development. The robustness is attributed to the strong covalent bonding and resistant nitrogen heterocyclic units that preserve structural integrity while maintaining activity. This stability ensures material longevity, reduces operational costs, and enhances the feasibility of deploying such systems in real-world environmental applications.

Potential implications of this research extend beyond water treatment. Given the central role of hydrogen peroxide as a green oxidant, the capability to efficiently generate it through sustainable photocatalysis opens avenues in chemical synthesis, antiseptic production, and fuel cell technologies. Moreover, the modularity of covalent organic frameworks allows for further structural tuning to target specific pollutants, tailor light absorption properties, and optimize catalytic performance for diverse applications.

The integration of nitrogen heterocyclic moieties marks an evolutionary leap in COF design, transforming these materials from passive adsorbents to dynamic photocatalysts with multifunctional capabilities. By seamlessly bridging the divide between advanced materials chemistry and environmental engineering, this work exemplifies the power of interdisciplinary approaches to tackle complex global challenges such as water pollution and sustainable chemical production.

Furthermore, this discovery resonates strongly with global sustainability goals, highlighting a path toward decentralized water treatment systems powered solely by sunlight and ambient air. The visible-light-driven conversion process obviates the need for external electrical power or chemical inputs, drastically reducing environmental footprints and operational complexities. In regions burdened by water scarcity and pollution, such technology offers an accessible and cost-effective solution to improve water quality and public health.

In practical terms, scaling up this technology will require further engineering of reactor designs and integration with existing water infrastructure. The authors hint at ongoing efforts aimed at fabricating composite membranes and photoreactive coatings based on these nitrogen heterocyclic COFs, envisioning modules that can be installed in wastewater treatment plants or portable purification units. The ease of synthesis and structural tunability of COFs bode well for adapting the material to diverse environmental contexts and pollutant profiles.

Complementing the experimental advancements, computational studies provided insight into the electronic structure-property relationships governing photocatalytic performance. Density functional theory calculations delineated charge density distributions and energy level alignments, affirming the critical influence of nitrogen incorporation on facilitating efficient electron transfer to oxygen molecules. This theoretical framework guides rational design of next-generation photocatalysts with refined active sites and enhanced selectivity.

The multidisciplinary synergy evident in this research—from synthetic organic chemistry and materials science to environmental engineering and theoretical modeling—represents an ideal blueprint for future scientific exploration. By converging expertise across fields, the team was able to surmount technical obstacles and deliver a transformative technology that simultaneously addresses energy efficiency, environmental protection, and chemical manufacturing.

In summary, the development of nitrogen heterocyclic covalent organic frameworks that proficiently photosynthesize hydrogen peroxide while carrying out in situ water treatment heralds a paradigm shift in sustainable environmental chemistry. This work lays the foundation for a new class of photoresponsive materials capable of fulfilling dual roles critical to a greener future. As efforts intensify to translate these findings into practical applications, society can anticipate cleaner water, greener chemical processes, and a significant step forward in the stewardship of planetary resources.

Subject of Research: Nitrogen heterocyclic covalent organic frameworks for photocatalytic hydrogen peroxide production and simultaneous water pollutant degradation.

Article Title: Nitrogen heterocyclic covalent organic frameworks for efficient H₂O₂ photosynthesis and in situ water treatment.

Article References:
Chen, Z., Weng, H., Chu, C. et al. Nitrogen heterocyclic covalent organic frameworks for efficient H₂O₂ photosynthesis and in situ water treatment. Nat Commun 16, 6943 (2025). https://doi.org/10.1038/s41467-025-62371-z

Image Credits: AI Generated