Journal of Alloys and Compounds最新文献

{"title":"In situ growth of Bi2S3 with regulated morphology in Bi2S3/BiVO4/TiO2 heterojunction to boost the reduction efficiency of Cr (VI)：experimental and DFT study","authors":"Hongwei Wang, Zhiping Mao, Xinli Li, Yunfei Zang, Renhong Yu","doi":"10.1016/j.jallcom.2025.180653","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180653","url":null,"abstract":"Heavy metal ion pollution in water, especially hexavalent chromium Cr(VI), has been a major concerned in the field of water treatment. Photocatalytic reduction of Cr(VI) is considered to be one of the effective methods. In this study, BiVO₄/TiO₂ and Bi₂S₃/BiVO₄/TiO₂ (BVT) heterojunction were constructed on TiO₂ nanorods by a straightforward hydrothermal strategy to improve the Cr(VI) reduction efficiency of TiO₂. Furthermore, Bi₂S₃ with various morphologies were in situ growth on BiVO₄/TiO₂ by adding different sulfur (S) sources. The experimental results show that BVT(H₂NCSNH₂) exhibited the strongest light absorption intensity, the narrowest bandgap (2.20<!-- --> <!-- -->eV), and the best photoelectric properties. For photocatalytic reduction of Cr(VI), BVT(H₂NCSNH₂) shows stronger adsorption capacity, more efficient reduction efficiency (reached 94.9%) and faster reduction rate (0.0316<!-- --> <!-- -->min^-1), outperforming counterparts with Bi₂S₃ nanosheets (Na₂S₂O₃) and core-shell structure (Na₂S). The work function obtained from DFT calculations indicated that an internal electric field at the heterojunction interface (directed from Bi₂S₃ to BiVO₄) was built. To sum up, the BVT(H₂NCSNH₂) heterojunction was synthesized through in situ growth method shows significant potential in wastewater treatment, offering an effective approach for removal of Cr(VI).","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"221 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defects and polarization charge cooperatively optimized Z-scheme NVs-g-C3N4/Bi/BiO1-xI heterojunction for full-spectrum catalytic organic pollutants mineralization and NO deep oxidation","authors":"Min Wang, Dehua Xin, Guoqiang Tan, Yun Qiu, Wei Zhang, Meng Shi, Le Shi","doi":"10.1016/j.jallcom.2025.180651","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180651","url":null,"abstract":"The application of photocatalysis technology still remains formidable challenges due to the limitations in the utilization of solar energy, the separation efficiency and redox ability of photogenerated charge carriers. In this work, we construct a Z-scheme NVs-g-C₃N₄/Bi/BiO_1-<em>x</em>I heterojunction through a HNO₃-assisted in-situ solvothermal method. Satisfactorily, full-spectrum light absorption is achieved by co-modifying by defects (nitrogen vacancies, oxygen vacancies and disorder micropores) and plasma Bi. Additionally, the band structures of NVs-g-C₃N₄ and Bi/BiO_1-<em>x</em>I are up-shifted and down-shifted, respectively, through interface polarization induced charge transfer modulation, further improving the oxidation-reduction capacities of electron-hole pairs. Meanwhile, owing to the charge capture and transport effects of intraband defect states and interface heterojunction, combined with the localized electromagnetic field enhancement induced by defects and plasma Bi, the charge separation efficiency is remarkably improved, and carrier lifetime is prolonged. Hence, the prepared NVs-g-C₃N₄/Bi/BiO_1-<em>x</em>I heterojunction exhibits boosted photocatalytic activity. Under visible and NIR light irradiation, the highest degradation rates of tetracycline can reach 0.0527<!-- --> <!-- -->min^-1 and 0.0113<!-- --> <!-- -->min^-1, respectively, which are 4.50 (2.64) and 5.14 (3.42) times higher than those of NVs-g-C₃N₄ (Bi/BiO_1-<em>x</em>I). Furthermore, upon illumination of visible light, 71.30% of NO can be removed by the optimal heterojunction, and the generation of toxic NO₂ is significantly suppressed. This work reveals the synergistic mechanism between defects, metal plasma and Z-scheme heterostructure in the photocatalytic processes, and provides a novel strategy for the rational design and construction of photocatalytic materials for solar energy-driven environmental cleaning.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"6 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Negative effect of nano-scale Al3(Sc, Zr) on strength of Sc-Zr micro-alloyed Al-Cu-Mg-Ag alloys","authors":"Feiyue Zhou ,&nbsp;Qiang Lu ,&nbsp;Jinsan Wang ,&nbsp;Namin Xiao ,&nbsp;Xingwu Li ,&nbsp;Baishan Chen ,&nbsp;Yong Du ,&nbsp;Kai Li","doi":"10.1016/j.jallcom.2025.180597","DOIUrl":"10.1016/j.jallcom.2025.180597","url":null,"abstract":"<div><div>The Al-Cu-Mg-Ag alloy is widely used in the aerospace industry due to its high strength and heat resistance and microalloying is the main strategy to improve its mechanical properties. Adding excessive Sc to Al-Cu-Mg-Ag alloys was reported to decrease strength, and this was attributed to the formation of micro-scale AlCuSc constituents. It is widely expected to avoid the generation of AlCuSc constituents, generate Sc-containing nano precipitates and improve mechanical properties, by adding a suitable amount of Sc. Unfortunately, according to the multi-scale microstructures and mechanical properties of a Sc-Zr micro-alloyed Al-Cu-Mg-Ag alloy studied in this work, it is shown that even if the formation of large AlCuSc constituents was prohibited and Al₃(Sc, Zr) nano precipitates were promoted through a multi-step homogenization, the alloy strength was still decreased due to Sc-Zr microalloying. This is mainly attributed to the heterogeneous nucleation of θ' precipitates alongside Al₃(Sc, Zr) particles, which consumes the available Cu solutes for Ω precipitation in the alloy, thereby reducing the volume fraction of the main strengthening phase Ω and the overall strengthening effect in both aged and thermally exposed states. Our findings provide insights into the effective control of the microstructure of Al-Cu-Mg-Ag alloys with Sc or Sc-Zr addition.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1028 ","pages":"Article 180597"},"PeriodicalIF":5.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MBOClxBr1-x microspheres derived from Bi-MOF for efficient degrade tetracycline hydrochloride under visible light irradiation","authors":"Tianyuan Zhang, Zilong Zhang, Lei Zhao, Xiang Wang, Huanjun Peng, Jingdong Peng","doi":"10.1016/j.jallcom.2025.180654","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180654","url":null,"abstract":"Through the halogenation reaction and employing metal-organic framework microspheres (Bi-MOF-M) as a sacrificial template, interleaved BiOCl_xBr_1-x nanosheet layers were grown on its surface. In contrast to Bi-MOF-M, the acquired MBOCl_xBr_1-x not only extends the visible light absorption range but also facilitates the effective separation of photogenerated carriers. Furthermore, based on Density Functional Theory simulation, the band gap structure of MBOCl_xBr_1-x could be effectively adjusted by changing the molar ratio of Cl/Br, which aligned with the results of Tauc plots. Taking tetracycline hydrochloride (TCH) as the target pollutant, we evaluated the photocatalytic degradation activity, stability, and recyclability of the sample under visible light. It was observed that materials with varying Cl/Br molar ratios significantly influenced the photocatalytic degradation of TCH, with MBOCl_0.25Br_0.75 exhibiting the highest photocatalytic activity, the degradation efficiency reached 83.16%, and the kinetic constants for TCH degradation were found to be 5.7 times and 1.5 times greater than those of Bi-MOF-M and BiOCl_0.25Br_0.75, respectively. Additionally, Rhodamine B (RhB), oxytetracycline (OTC), ciprofloxacin hydrochloride (CIP·HCl), methylene blue (MB), and malachite green (MG) were employed as extended contaminants to further assess the catalytic activity of the samples. We also investigated the effects of pH, inorganic anions, and temperature on the degradation of TCH by MBOCl_0.25Br_0.75. The potential pathways for the photocatalytic degradation of TCH by the catalyst were elucidated through high-performance liquid chromatography-mass spectrometry analysis. Meanwhile, a rational mechanism for the photocatalytic degradation of TCH by the MBOCl_0.25Br_0.75 catalyst with ·OH and ·O₂^- as the predominant active species was proposed. A green synthesis method had been proposed that not only preserves the exceptional structural properties of metal-organic frameworks (MOFs) but also modulated the energy band structure and enhances photocatalytic performance.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"11 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering a novel BiVO4-CuFe2O4@MXene heterojunction with boosted photocatalytic activity: Visible-light-driven enrofloxacin degradation from polluted water and H2 production","authors":"Jun Zhao ,&nbsp;Mohammed Al-Asadi ,&nbsp;Ali B.M. Ali ,&nbsp;Ali Saber Abdelhameed ,&nbsp;Haitao Lin ,&nbsp;Amer M. Alanazi ,&nbsp;M.A. Diab ,&nbsp;Heba A. El-Sabban ,&nbsp;Farruh Atamurotov ,&nbsp;Alisher Abduvokhidov ,&nbsp;Azizbek Azamatov","doi":"10.1016/j.jallcom.2025.180648","DOIUrl":"10.1016/j.jallcom.2025.180648","url":null,"abstract":"<div><div>Innovative solutions are needed to address renewable energy demands and mitigate environmental pollution. Although photocatalysis effectively degrades pollutants and generates hydrogen, limitations in charge separation, redox efficiency, and catalyst stability continue to impede progress. Herein, a novel BiVO₄-CuFe₂O₄@MXene (BVCFMX) composite was synthesized via a facile hydrothermal process. The optimized BVCFMX-30 photocatalyst achieves rapid and efficient Enrofloxacin (ENR) degradation (96.03 %) and exhibits a high hydrogen evolution rate (3.15 μmol·g⁻¹·h⁻¹), surpassing single-component and binary systems, primarily due to MXene-enabled superior charge separation, enhanced visible-light absorption, and robust redox capability. Beyond ENR, it effectively degrades various antibiotics, including OFX (92.62 %), SMZ (89.55 %), CPX (85.6 %), and CIP (80.3 %), and maintains strong performance across different water sources, attesting to its versatility and applicability in real-world conditions. Mechanistic investigations, supported by radical scavenging and EPR analysis, highlight the critical roles of O₂⁻·, ·OH, and h⁺ radicals. Comprehensive LC-MS characterization elucidates multi-step degradation pathways and confirms that intermediate products are less toxic, as evidenced by reduced bioaccumulation factors and developmental toxicity indices. 83.02 % TOC removal and sustained efficiency of over 80 % after five cycles indicate substantial mineralization, stability, and long-term durability of the synthesized photocatalyst.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1028 ","pages":"Article 180648"},"PeriodicalIF":5.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MnSnO3 perovskite boosted P-rGo-MoSe2-MnSnO3 multiple-interface nanocomposite for efficient overall water splitting","authors":"Priyanshu Chaubey,&nbsp;Subhajit Sarkar,&nbsp;Prashant Kr. Sharma","doi":"10.1016/j.jallcom.2025.180650","DOIUrl":"10.1016/j.jallcom.2025.180650","url":null,"abstract":"<div><div>One effective way to accomplish the bifunctionality of electrocatalysts is to build a heterogeneous interface utilising different components. Moreover, the performance of single-interface electrocatalysts can be further optimised through synergistic interactions between several interfaces. Using hydrothermal and sonochemical techniques simultaneously, we have synthesised P-rGO-MoSe₂-MnSnO₃ nanocomposite with several distinct interfaces. MnSnO₃ perovskite aggregated nanoparticles are sandwiched between the ultrathin exfoliated intercalated nanosheets of P-rGO-MoSe₂. For oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) the overpotentials required by P-rGO-MoSe₂-MnSnO₃ nanocomposite are 254.3 mV and 185.3 mV at 10 mA/cm² having Tafel slopes of 98.4 mV/dec and 87.1 mV/dec, respectively. Following a 24-hours chronoamperometry (CA) stability test, smaller change in the overpotential values were seen in both OER and HER processes. The synergistic interactions and active edge spots of P-rGO-MoSe₂-MnSnO₃ nanocomposite engage in the electrocatalytic process and encourage the electronic movement. Therefore, the two-electrode system (P-rGO-MoSe₂-MnSnO₃ || P-rGO-MoSe₂-MnSnO₃) only needs a 1.54 V cell potential at 10 mA/cm² in overall water splitting (OWS). Furthermore, an exceptional longer durability multi-step chronopotentiometry (MCP) stability testing of 82-hours was successfully achieved by this P-rGO-MoSe₂-MnSnO₃ nanocomposite. This P-rGO-MoSe₂-MnSnO₃ nanocomposite is even more appropriate for use as a bifunctional electrocatalyst because the Faradic efficiencies of the evolved O₂ and H₂ gases both were determined to be 98 %. This work offers a promising concept for building the heterostructures based on P-rGO-MOSe₂ nanosheets-supported MnSnO₃ perovskite nanoparticles for constructing multi-interfacial bifunctional electrocatalysts.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1028 ","pages":"Article 180650"},"PeriodicalIF":5.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous hollow structured CuIn bimetallic catalysts for CO2 hydrogenation to methanol","authors":"Zhisheng Shi, Xiang Wu, Lei Zhao, Ailong Qiu, Nannan Ge, Chizhou Tang, Xueling Wei, Linhua Chu, Xingyang Li, Mei Xiang","doi":"10.1016/j.jallcom.2025.180643","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180643","url":null,"abstract":"CO₂ hydrogenation to valuable chemicals such as methanol is an environmentally friendly and economically viable strategy, which is important for alleviating the energy crisis and achieving carbon neutrality goals. In₂O₃ catalysts are exciting due to their excellent methanol selectivity and catalytic stability. However, pure In₂O₃ or conventional structured In₂O₃ still has apparent defects such as low catalytic performance. Herein, porous hollow structured CuIn bimetallic catalysts were successfully synthesized by synchronous spray pyrolysis method and used for methanol formation through CO₂ hydrogenation. The impact of metal composition on the formation of CuIn bimetallic compounds, as well as the catalytic performance and other relevant characteristics were systematically studied. The results demonstrate that the bimetallic catalyst undergoes a notable physical phase change in response to alterations in the Cu:In molar ratio, resulting in the emergence of a Cu₁₁In₉ phase. Furthermore, the synergistic interaction between Cu₁₁In₉ and In₂O₃ has a considerable promotion on the catalytic activity. As the Cu: In molar ratio reaches 1:2, the obtained catalyst exhibits optimal synergistic interactions between Cu₁₁In₉ and In₂O₃, leading to the highest metal Cu dispersion, the largest active surface area, the greatest oxygen vacancy content, and the excellent CO₂ adsorption capacity. Therefore, the best catalytic activity is achieved on the Cu:In (1:2) catalyst, which owns great potential as a candidate for CO₂ hydrogenation to methanol.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"112 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of MoSSe and WSSe via direct ampule method: Exploring structural and electronic properties, liquid exfoliation and electrocatalytic performance for hydrogen production","authors":"A.S. Oreshonkov ,&nbsp;Yu.G. Denisenko ,&nbsp;N.O. Azarapin ,&nbsp;A.S. Voronin ,&nbsp;D.A. Chernodubov ,&nbsp;S.A. Evlashin ,&nbsp;M.N. Volochaev ,&nbsp;I.V. Nemtsev ,&nbsp;M.S. Molokeev ,&nbsp;P.O. Glukhova ,&nbsp;A.A. Kuular ,&nbsp;K.I. Maslakov ,&nbsp;E.V. Sukhanova ,&nbsp;Klaus Müller-Buschbaum ,&nbsp;Z.I. Popov","doi":"10.1016/j.jallcom.2025.180642","DOIUrl":"10.1016/j.jallcom.2025.180642","url":null,"abstract":"<div><div>Since catalytically active materials require special synthesis conditions, which cause difficulty in scaling, it is necessary to develop new lightweight scalable approaches for industrial applications. The most obvious way is to use elementary components to fabricate complex structures. In our work, we used a fundamental ampoule synthesis method to produce <em>M</em>SSe (<em>M</em> = Mo, W) powders with a homogeneous random distribution of chalcogen atoms. The synthesized samples exhibit <em>P</em>6₃/<em>mmc</em> space group indicating the existence of 2 H phase which was proved by comprehensive experimental and theoretical analysis and demonstrates rational characteristics in the hydrogen evolution reaction. The Tafel slopes for synthesized MoSSe and WSSe are 93 and 86 mV/dec, respectively. Moreover, the MSSe samples demonstrate the same catalytic activity in the hydrogen evolution reaction as the samples subjected to ultrasonic treatment in N-Methyl-2-pyrrolidone, with Tafel slopes of 92 and 88 mV/dec for MoSSe and WSSe, respectively.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1028 ","pages":"Article 180642"},"PeriodicalIF":5.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid carrier extraction and d-band center regulation of Pd-ZnIn2S4 for efficient photocatalytic water splitting","authors":"Liang Zhao ,&nbsp;Tianrui Chang ,&nbsp;Zhiyuan Hu ,&nbsp;Kejie Fang ,&nbsp;Xutao Zhang ,&nbsp;Wanying Xiao ,&nbsp;Feng Jiang ,&nbsp;Lijing Wang ,&nbsp;Daosheng Liu ,&nbsp;Yongya Zhang","doi":"10.1016/j.jallcom.2025.180652","DOIUrl":"10.1016/j.jallcom.2025.180652","url":null,"abstract":"<div><div>Addressing the dynamic behavior of carrier extraction and the regulation of the metal d‐band center is crucial yet remains a significant challenge in the photocatalytic water-splitting process. In this study, we successfully incorporated different amounts of Pd into the ZnIn₂S₄ lattice using a one-pot oil bath method. This approach facilitated efficient carrier extraction and effective modulation of the d‐band center by introducing numerous S-defect sites. Furthermore, the coupling of 2.79 wt% Pd optimized the adsorption free energy of ZnIn₂S₄ for the crucial hydrogen evolution intermediate (*H). As a result, the solar efficiency, specific surface area, hydrophilicity, and carrier separation efficiency of ZnIn₂S₄ were all enhanced. Illuminated by a 300 W xenon lamp, the photocatalytic hydrogen evolution rate achieved 2.31 mmol/g/h, exhibiting a quantum efficiency of 4.56 % at 420 nm. These findings contribute to overcoming the dynamic bottlenecks in photocatalytic water splitting, thus enhancing the efficiency of solar energy conversion into clean energy sources.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1027 ","pages":"Article 180652"},"PeriodicalIF":5.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances and challenges in multiple S-scheme heterojunction photocatalysts","authors":"Haitao Ren ,&nbsp;Zongcheng Miao ,&nbsp;Yuzhen Zhao ,&nbsp;Shahnaz Ghasemi ,&nbsp;Xiangbo Feng ,&nbsp;Enzhou Liu ,&nbsp;Mohsen Padervand","doi":"10.1016/j.jallcom.2025.180646","DOIUrl":"10.1016/j.jallcom.2025.180646","url":null,"abstract":"<div><div>Photocatalytic technology has emerged as a promising solution for addressing global energy shortages and environmental pollution. Despite extensive research, the practical application of conventional single photocatalysts remains constrained by their narrow light absorption range, insufficient redox capacity, and rapid recombination rates of photogenerated electrons and holes, hindering their photocatalytic efficiency. To overcome these bottlenecks, heterojunction strategies integrating two or more semiconductor materials are a promising approach to enhance the performance of individual photocatalysts. S-scheme heterojunction photocatalysts have provided a breakthrough by enabling efficient separation of photogenerated carriers and strong redox capabilities. However, traditional S-scheme systems are still constrained by high contact resistance and sluggish charge transfer at the interface between the oxidation and reduction components. Recent advances in multiple S-scheme heterojunction photocatalysts with reduced contact resistance offer a feasible solution by incorporating more than two semiconductors to facilitate multidirectional charge transfer pathways and improved carrier dynamics through the synergistic interaction of multiple components. Despite their promising performance, a comprehensive understanding of the design, mechanisms, and practical applications of multiple S-scheme heterojunction systems remains lacking, presenting a significant knowledge gap in the field. This work addresses this gap by systematically investigating the structural design, transfer models, and interfacial challenges unique to multiple S-scheme heterojunctions. This review first discusses the evolution of heterojunction mechanisms from type-II and Z-scheme to S-scheme. Then, it focuses on the novel principles governing multiple S-scheme systems, including their charge dynamics and interfacial optimization strategies. Highlighting the recent advancements in multiple S-scheme heterojunctions, their efficacy in diverse applications such as organic pollutant degradation, H₂ generation, disinfection, and CO₂ reduction have been demonstrated. Moreover, this study identifies key barriers to their practical application, such as scalable synthesis, stability, and unclear mechanisms, while suggesting a future roadmap, including advanced in-situ characterization techniques and machine learning-driven material design for next-generation systems. By bridging the gap between fundamental research and practical applications, this review provides a direction for advancing high-efficiency photocatalytic systems to support global sustainability.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1028 ","pages":"Article 180646"},"PeriodicalIF":5.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}