Materials Chemistry and Physics最新文献

{"title":"Fabrication of heterojunction-based S-scheme NiS/Bi2MoO6 photocatalyst with an outstanding photocatalytic degradation of Atrazine","authors":"Mohamed Mokhtar M. Mostafa ,&nbsp;L. A. Al-Hajji ,&nbsp;Almuhrah A.N. Alroba ,&nbsp;Adel A. Ismail","doi":"10.1016/j.matchemphys.2026.132196","DOIUrl":"10.1016/j.matchemphys.2026.132196","url":null,"abstract":"<div><div>One of the best techniques for enhancing photocatalytic performance is heterojunction engineering, which enables rapid charge-carrier kinetics and low charge-transfer resistance. Here, a straightforward synthesis process was employed to integrate NiS nanoparticles onto mesoporous Bi₂MoO₆, forming heterostructure S-scheme NiS/Bi₂MoO₆ photocatalyst. Atrazine degradation under visible light was used to determine the photocatalytic activity of the Bi₂MoO₆ NPs and NiS/Bi₂MoO₆ photocatalysts. The formation of a well-structured NiS/Bi₂MoO₆ nanocomposite with intimate contact and nanoscale mixing of NiS and Bi₂MoO₆ is confirmed by TEM. The results showed that the heterojunction NiS/Bi₂MoO₆ photocatalyst demonstrated excellent photocatalytic activity compared to pristine Bi₂MoO₆. The optimized NiS/Bi₂MoO₆ achieved complete Atrazine degradation (100%) after 40 min of illumination. The rate constant for the 9% NiS/Bi₂MoO₆ nanocomposite (0.0623 min⁻¹) was twice as high as that of pristine Bi₂MoO₆ nanoparticles (0.0306 min⁻¹). The superior Atrazine removal efficiency of NiS/Bi₂MoO₆ nanocomposite can be attributed to their synergistic effect with the suitable band potentials of NiS and Bi₂MoO₆, small crystallite size, narrow bandgap, high adsorption capacity, rapid transport, and easy penetration of Atrazine to active sites within the mesoporous structure, as well as reduced light scattering. Reusability tests showed that the regenerated NiS/Bi₂MoO₆ photocatalyst maintained strong stability and reusability after five consecutive cycles. The 9% NiS/Bi₂MoO₆ photocatalyst also exhibited the lowest PL response, highest photocurrent intensity, and smallest EIS curve radius, aligning with its superior photocatalytic activity. The resulting NiS/Bi₂MoO₆ serves as a potent oxidizing agent for mineralizing Atrazine and immensely enhances the separation rate of photocharges by generating an electric field at the n-n heterojunction. This work outlines a practical method for producing highly efficient heterojunction photocatalysts.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132196"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A graph-based approach for balancing chemical reactions","authors":"Hossein Jafari","doi":"10.1016/j.matchemphys.2026.132096","DOIUrl":"10.1016/j.matchemphys.2026.132096","url":null,"abstract":"<div><div>Chemistry is undoubtedly one of the most practically significant sciences in human life. From the moment we wake up until the end of the day, we constantly interact with various chemicals, and the applications of chemistry are pervasive in our daily lives. This study addresses one of the well-known challenges in the field of chemistry: the balancing of chemical reactions. This problem, commonly referred to as chemical equation balancing, has different solving algorithms for different types of reactions. In other words, different types of chemical reactions may require distinct algorithms for balancing. In this paper, using the Law of Conservation of Mass (LCM) and basic mathematical principles, a simplified system was introduced for each chemical reaction. Furthermore, a heuristic graph-based algorithm was employed to find the optimal solution to this system.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132096"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controlled synthesis of sulfurization-assisted MnSeO3/S electrocatalyst for OER and HER in an alkaline medium","authors":"Hamna Arooj ,&nbsp;Tauseef Munawar ,&nbsp;Ambreen Bashir ,&nbsp;Mostafa A. Ismail ,&nbsp;Abdul Waheed Rabbani ,&nbsp;Muhammad Rafaqat ,&nbsp;Faisal Mukhtar ,&nbsp;Muhammad Sufyan Naeem ,&nbsp;Faisal Iqbal ,&nbsp;Suleyman I. Allakhverdiev","doi":"10.1016/j.matchemphys.2026.132162","DOIUrl":"10.1016/j.matchemphys.2026.132162","url":null,"abstract":"<div><div>The production of green hydrogen by electrocatalytic water splitting is important for decreasing the extensive utilization of carbonized petroleum. However, the sluggish kinetics of OER and HER processes demand suitable catalysts that have high efficiency/performance and low cost. Herein, we synthesized the MnSeO₃ electrocatalyst using the hydrothermal method, but non-surface chemistry, limited active centres, and poor electrical conductivity made it an inefficient electrocatalyst for hydrogen production. These drawbacks are reduced by adopting a composite strategy with non-metal sulfide (MnSeO₃/S composite) and analysing its electrochemical trend towards OER and HER. Experimental investigation, including XRD, FESEM, IV, and XPS, focused on mixed-phase growth, good conductivity, regulated morphology, and electronic structure. Developing high valence active centres and defective structure in MnSeO₃/S composite increased the adsorption and desorption of atoms on the catalyst surface compared to bulk catalysts. By coating the composite onto the stainless-steel (SS) substrate, the formed MnSeO₃/S/SS electrocatalyst obtained a small overpotential of 248 mV for OER and 128 mV for HER at 10 mA cm⁻² current density. Moreover, the functionalization of bimetallic oxide with sulfide anions provided a fast electron and ion transfer rate, which is confirmed by low Tafel slope values (48.1 mV dec⁻¹ for OER and 72 mV dec⁻¹ for HER). The interaction across cation-anion bonds induced an active large surface area and the lowest polarization resistivity, confirmed by ECSA and EIS. Moreover, the enormous stability of MnSeO₃/S electrocatalyst in alkaline medium proved beneficial for developing other binary material/anion electrocatalysts towards future electrochemical applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132162"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effluent treatment using powdered silk: Spectroscopic and molecular docking insights into malachite green oxalate adsorption","authors":"Kiran M. Lalge ,&nbsp;Malhari C. Nagtilak ,&nbsp;Sandip N. Labade ,&nbsp;Vidyarani S. Patil ,&nbsp;Nilesh J. Khengare ,&nbsp;Shakuntala S. Sawant ,&nbsp;Ranjana K. Jadhav","doi":"10.1016/j.matchemphys.2026.132193","DOIUrl":"10.1016/j.matchemphys.2026.132193","url":null,"abstract":"<div><div>The study examined the adsorption of Malachite Green (MG) Oxalate onto powdered silk under optimized conditions of pH 8, a contact time of 60 s, and a temperature of 30 °C. Desorption was successfully achieved at pH 2. The study evaluated the effects of pH, contact time, powdered silk particle size, temperature, adsorbent dosage, and adsorbate concentration, as well as dye recovery performance. The maximum adsorption capacity was 23.41 mg g⁻¹, with 99% removal efficiency under optimal conditions. Kinetic data followed the pseudo-second-order model (R² = 0.9999), while equilibrium data were best fitted by the Langmuir isotherm (R² = 0.9958). Thermodynamic analysis revealed that the adsorption process was spontaneous (ΔG = −1.495 kJmol^-1), endothermic (ΔH = 25.32 kJmol^-1), and accompanied by increase in entropy ΔS = 84.44 Jmol⁻¹K⁻¹). Molecular docking identified π-cation and π-π stacking interactions between MG and specific amino acid residues, supported by FT-IR evidence of hydrogen bonding. FESEM imaging provided insights into the composite's morphology and particle size distribution, while TGA confirmed thermal stability up to 189.99 °C. BET analysis further characterized the adsorbent's pore properties. Overall, powdered silk is an effective adsorbent for MG.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132193"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of segregation and mechanism of microstructure formation in twin roll cast AA6061 alloy strip through numerical simulation and experimental verification","authors":"Akshay Kumar Soni ,&nbsp;Debtanay Das ,&nbsp;Swarup Bag ,&nbsp;P.S. Robi ,&nbsp;Dheeraj Kumar Saini ,&nbsp;Pradeep Kumar Jha","doi":"10.1016/j.matchemphys.2026.132208","DOIUrl":"10.1016/j.matchemphys.2026.132208","url":null,"abstract":"<div><div>Twin roll casting (TRC) is an emerging and energy efficient technology utilized for the production of thin strips directly from melt where the property is greatly influenced by elemental segregation. The current study highlights the microstructure formation and the segregation behaviour of alloy AA6061 through solidification dynamics at different casting speeds. A strong cooling rate and thermal gradient near the roll surface promotes fine dendritic structure, while at the centre it is subjected to coarse equiaxed grains. Increase in casting speed also enhances cooling rates, resulting in reduction of secondary dendritic arm spacing (SDAS) from 12.7 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span> to 10 <span><math><mrow><mi>μ</mi><mi>m</mi></mrow></math></span>. The recirculating flow induced by roll motion contributes in dendritic fragmentation which serves as potential nucleating sites for further grain refinement. EDS analysis shows the segregation of Si and Mg in inter-dendritic (micro-segregation) regions and at the centre of the cast strip (centreline segregation). On increasing casting speed, the intensity of segregation is reduced due increased effective partition coefficient and solute trapping within <span><math><mrow><mi>α</mi><mo>−</mo><mtext>Al</mtext></mrow></math></span> matrix. Si holds higher segregation tendency (low partition coefficient) relative to Mg. The current study provides a valuable insight into microstructure formation and solute partitioning of AA6061 alloy using the numerical model of TRC. The overall objective is to optimize the casting parameters for improved strip quality and reduced segregation in aluminium alloys.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132208"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146192143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced electrochemical properties of Mn and Cu co-doped nickel cobaltite/rGO nanocomposites for superior supercapacitor electrode materials","authors":"Faria Usman ,&nbsp;Samra Zeb ,&nbsp;Mahwish Afzia ,&nbsp;Xianmin Zhang ,&nbsp;Rafaqat Ali Khan","doi":"10.1016/j.matchemphys.2026.132184","DOIUrl":"10.1016/j.matchemphys.2026.132184","url":null,"abstract":"<div><div>In this study, pristine NiCo₂O₄ and its Mn/Cu co-doped derivatives i.e., Ni_1-xMn_xCo_2-yCu_yO₄ nanoparticles, were synthesized by co-precipitation method, followed by their composite formation with rGO. The materials were characterized by XRD, FTIR, XPS and SEM to confirm the structure, morphology, surface chemical features and composition. XPS analysis confirmed the oxygen vacancies and electrically active metal sites, which enhanced electrode–electrolyte interactions as well as surface redox activity. Electrochemical studies indicated that composites with a nominal composition of Ni_0.5Mn_0.5Co_1.0Cu_1.0O₄/rGO, achieved maximum specific capacitance, measuring 1738 F g^-1 at a scan rate of 5 mVs⁻¹ with improved energy density of 196 Wh/Kg. GCD studies confirmed improved rate capability and remarkable cyclic stability, with its rGO composite retaining 95% of its specific capacitance after 5000 cycles at 5 A g^-1. The maximum specific capacitance we observed in this case was 558 F g^-1 at 1 A g^-1, having the capability of maintaining the property over various cycles. Additionally, the EIS behavior confirmed that Mn–Cu co-doped composite material with rGO has less series resistance (<em>R</em>_s). Nyquist plots supported the EIS analysis, confirming that all synthesized materials showed best capacitive behavior. Moreover, Mn–Cu co-doped composite had the lowest equivalent series resistance of 180 mΩ in comparison to that of pristine NiCo₂O₄. Through Randles circuits, we carefully interpreted how different interfaces are formed at electrode surface to undergo redox reaction beneficial for electrochemical activities.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132184"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning quercetin delivery through in-situ and ex-situ loading of UiO-66-NH2 for pH-responsive liver cancer therapy","authors":"Layla Afianti Maksum ,&nbsp;Witri Wahyu Lestari ,&nbsp;Murni Handayani ,&nbsp;Ozi Adi Saputra ,&nbsp;Caecilia Sukowati ,&nbsp;Claudio Tiribelli ,&nbsp;Lory Saveria Crocè ,&nbsp;Fajar Rakhman Wibowo ,&nbsp;Maulidan Firdaus ,&nbsp;Tonang Dwi Ardyanto","doi":"10.1016/j.matchemphys.2026.132099","DOIUrl":"10.1016/j.matchemphys.2026.132099","url":null,"abstract":"<div><div>This study investigates the incorporation of quercetin, a natural anticancer agent, into UiO-66-NH₂ metal-organic frameworks (MOFs) using two strategies: in-situ encapsulation during MOF synthesis and ex-situ loading into preformed frameworks. Both methods successfully produced quercetin-loaded MOFs with distinct structural and functional features. In-situ loading caused significant structural changes, reducing surface area and porosity, whereas ex-situ loading preserved the original framework. Drug loading capacities were 41.1 % for in-situ and 67.13 % for ex-situ formulations. Both systems displayed pH-responsive release, but with different mechanisms: the in-situ formulation followed a super Case II transport, showing rapid quercetin release under acidic conditions (up to 90.98 % at pH 1.2), while the ex-situ formulation exhibited anomalous (non-Fickian) diffusion, providing gradual and sustained release, especially at physiological pH. Biological evaluation in liver cancer cell lines (Huh7 and JHH6) showed that the ex-situ formulation retained higher anticancer activity compared to the in-situ formulation. These findings highlight that the method of drug incorporation strongly influences MOF structure, release behavior, and therapeutic performance, offering valuable guidance for designing responsive nanocarriers for targeted cancer therapy.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132099"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reinforcement of the Fe(110)/TiN(100) interface by elemental doping: machine learning accelerated first principles calculations","authors":"Yuan Tao ,&nbsp;Chenhuan Cai ,&nbsp;Ao Chen ,&nbsp;Tao Xia ,&nbsp;Hanzhang Yu ,&nbsp;Yong Liu ,&nbsp;Lina Zhou ,&nbsp;Jingchuan Zhu","doi":"10.1016/j.matchemphys.2026.132066","DOIUrl":"10.1016/j.matchemphys.2026.132066","url":null,"abstract":"<div><div>Atomic-scale control of metal–ceramic interfaces is crucial for enhancing the service performance of these materials. Elemental doping effectively improves interfacial bonding, yet many elements in the periodic table remain largely unexplored. In this study, we present an efficient interface optimization method that combines first-principles calculations (DFT), machine learning (ML), and verification calculations (VC) to accelerate the screening and prediction of dopant performance. Using the Fe(110)/TiN(100) interface as a model system, we conducted first-principles calculations on 35 representative dopants to determine key interfacial parameters. After feature engineering, six ML models were trained and evaluated, and a stacking ensemble model was created from the four best-performing models to enhance generalization and stability. High-throughput predictions were carried out on doped systems throughout the entire periodic table, revealing candidate elements that improve interfacial bonding, mainly among transition metals in periods 4, 5, and 6. To confirm the model predictions, verification calculations were performed on three doped systems (V, Mo, W), assessing charge transfer and mechanical response, which closely aligned with the predictions. These findings demonstrate that the DFT–ML–VC framework effectively accelerates dopant screening and interface design, significantly reducing computational costs and opening new avenues for the intelligent development of metal/ceramic heterostructures.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132066"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-selective and highly efficient adsorption of anionic/cationic dye by AgBiS2 and mechanistic analysis","authors":"Nihad Ibrahim Mohammed Abdallah ,&nbsp;Xuqiang Zhang ,&nbsp;Qiong Lu ,&nbsp;Tengwei Huang ,&nbsp;Fengxia Yang ,&nbsp;Xiaofei Dong ,&nbsp;Yun Zhao ,&nbsp;Jiangtao Chen ,&nbsp;Yan Li","doi":"10.1016/j.matchemphys.2026.132174","DOIUrl":"10.1016/j.matchemphys.2026.132174","url":null,"abstract":"<div><div>To tackle the pressing demand for effective remediation of organic dye-contaminates, selective adsorption has emerged as a research focus, celebrated for its cost-efficiency and high specificity. In this study, ternary metal sulfide AgBiS₂, synthesized via a facile hydrothermal approach, is employed as novel adsorbents, with the innovative aim of exploring their selective adsorption behavior to charge dyes and the underly mechanisms. AgBiS₂ demonstrates significantly higher adsorption capacity and faster kinetics for cationic Rhodamine B (RhB) compared to anionic methyl orange (MO). With 10 mg L⁻¹ of initial concentration, the removal efficiency of RhB reaches 99.9 % within 60 min, in contrast to 57.7 % for MO, and RhB adsorption achieves near-equilibrium rapidly. The material also displays distinct pH-dependent selectivity in RhB adsorption, including the highest adsorption capacity reaches to 101.5 mg g⁻¹ under alkaline conditions, while the minimum is 32.4 mg g⁻¹ in an acidic environment. Kinetic analyses reveal that RhB adsorption obeys a pseudo-second-order model, suggesting chemisorption as the dominant mechanism, and adsorption data fit the Langmuir isotherm best, with a capacity of 106.9 mg g⁻¹ at pH = 7.5. Systematically characterizations reveal that abundant S²⁻ sites on the surface of AgBiS₂ are identified as crucial for the high-selective adsorption of RhB, mainly via electrostatic interactions. This study provides valuable support for the design of high-performance ternary sulfide adsorbents for treating dye wastewater.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132174"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Cr(VI) photoreduction in water using TiO2/CuWO4 photocatalytic coating","authors":"Hamed Bahramian ,&nbsp;Arash Fattah-alhosseini ,&nbsp;Minoo Karbasi ,&nbsp;Burak Dikici ,&nbsp;Mosab Kaseem","doi":"10.1016/j.matchemphys.2026.132194","DOIUrl":"10.1016/j.matchemphys.2026.132194","url":null,"abstract":"<div><div>This study presents the rational design of a TiO₂/CuWO₄ heterostructure coating fabricated on a titanium substrate, where a TiO₂ layer was first formed via plasma electrolytic oxidation (PEO), followed by the hydrothermal growth of CuWO₄ nanoparticles, resulting in outstanding Cr(VI) photoreduction performance. This study reports the rational design of a hydrothermally post-treated PEO-derived TiO₂/CuWO₄ heterostructure coating with exceptional Cr⁶⁺ photoreduction activity. Comprehensive characterization (FE-SEM/EDS, XRD, AFM, UV–Vis DRS, PL, and Mott–Schottky analysis) revealed that hydrothermal CuWO₄ integration induces: (i) a microporous TiO₂ base layer supporting a hierarchical structure with uniformly distributed CuWO₄ particles; (ii) the formation of a Type-II heterojunction that facilitates efficient e⁻/h⁺ separation; and (iii) a super hydrophilic surface with enhanced roughness, improving reactant accessibility. Furthermore, the influence of scavengers was systematically investigated, confirming the critical roles agents (<span><math><mrow><msup><mi>e</mi><mo>−</mo></msup></mrow></math></span>, <span><math><mrow><mmultiscripts><msub><mi>O</mi><mn>2</mn></msub><mprescripts></mprescripts><none></none><mn>1</mn></mmultiscripts></mrow></math></span>, <span><math><mrow><msup><mrow><mi>H</mi><mi>O</mi></mrow><mo>⦁</mo></msup></mrow></math></span>, and <span><math><mrow><msubsup><mi>O</mi><mn>2</mn><mrow><mo>⦁</mo><mo>−</mo></mrow></msubsup></mrow></math></span>). Among scavengers, oxalic acid and potassium persulfate exhibited pronounced contributions by enhancing hole- and electron-driven pathways. A mechanism, combining heterojunction-driven charge transfer is proposed, providing a scalable and durable photocatalytic coating solution for heavy-metal remediation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"354 ","pages":"Article 132194"},"PeriodicalIF":4.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}