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Interfacial engineering of Cd0.5Zn0.5S/BiOBr S-scheme heterojunction with oxygen vacancies for effective photocatalytic antibiotic removal 含氧空位的Cd0.5Zn0.5S/BiOBr S-scheme异质结光催化抗生素去除的界面工程
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-12-01 Epub Date: 2025-09-20 DOI: 10.1016/j.actphy.2025.100190
Deyun Ma , Fenglan Liang , Qingquan Xue , Yanping Liu , Chunqiang Zhuang , Shijie Li
{"title":"Interfacial engineering of Cd0.5Zn0.5S/BiOBr S-scheme heterojunction with oxygen vacancies for effective photocatalytic antibiotic removal","authors":"Deyun Ma ,&nbsp;Fenglan Liang ,&nbsp;Qingquan Xue ,&nbsp;Yanping Liu ,&nbsp;Chunqiang Zhuang ,&nbsp;Shijie Li","doi":"10.1016/j.actphy.2025.100190","DOIUrl":"10.1016/j.actphy.2025.100190","url":null,"abstract":"<div><div>The construction of S-scheme heterojunction photocatalysts has emerged as a promising strategy to address the urgent need for efficient antibiotic wastewater remediation. However, persistent challenges in achieving interfacial intimacy and precise charge transfer regulation between semiconductors have hindered their practical implementation. In this work, we engineered a hierarchical Cd<sub>0.5</sub>Zn<sub>0.5</sub>S/BiOBr S-scheme heterojunction via a controlled solvothermal synthesis, where BiOBr microspheres serve as the core, and Cd<sub>0.5</sub>Zn<sub>0.5</sub>S nanoparticles form a conformal shell. This architecture ensures maximal interfacial contact and directional charge dynamics, critical for optimizing photocatalytic efficiency. The optimized heterojunction exhibits superior catalytic performance, achieving tetracycline (TC) degradation rate constants 3.3- and 1.6-fold greater than pristine BiOBr and Cd<sub>0.5</sub>Zn<sub>0.5</sub>S, respectively. This enhancement stems from the synergistic interplay of efficient charge separation and preserved redox capacities inherent to the S-scheme mechanism. Furthermore, the TC degradation process and mechanism were elucidated. This study provides a new perspective on developing defective S-scheme heterojunctions for antibiotic wastewater purification with high performance.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 12","pages":"Article 100190"},"PeriodicalIF":13.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SnS2-based heterostructures: advances in photocatalytic and gas-sensing applications sns2基异质结构:光催化和气敏应用的进展
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-12-01 Epub Date: 2025-09-10 DOI: 10.1016/j.actphy.2025.100185
Jingjing Liu, Aoqi Wei, Hao Zhang, Shuwang Duo
{"title":"SnS2-based heterostructures: advances in photocatalytic and gas-sensing applications","authors":"Jingjing Liu,&nbsp;Aoqi Wei,&nbsp;Hao Zhang,&nbsp;Shuwang Duo","doi":"10.1016/j.actphy.2025.100185","DOIUrl":"10.1016/j.actphy.2025.100185","url":null,"abstract":"<div><div>Recent advances in tin disulfide (SnS<sub>2</sub>)-based heterojunctions have demonstrated their great potential for photocatalysis and sensing applications, owing to their optimal bandgap (2.0–2.3 eV), remarkable stability, environmental compatibility, and outstanding surface reactivity. Despite these advantages, a comprehensive review systematically addressing this emerging field remains lacking. This review first outlines the state-of-the-art synthesis strategies for SnS<sub>2</sub> heterostructures. It then critically evaluates their photocatalytic performance in key applications, including hydrogen evolution, environmental remediation, and hydrogen peroxide production. The gas-sensing capabilities are subsequently analyzed, with special emphasis on nitrogen dioxide and ammonia detection. Mechanistic studies reveal that the enhanced performance originates from tailored heterojunction designs: S-scheme configurations significantly boost charge separation in photocatalysis; n-n/p-n junctions optimize active site distribution and gas adsorption in sensing applications. The interfacial synergy between SnS<sub>2</sub> and coupled semiconductors is identified as the key factor governing performance improvements. Finally, some conclusions and perspectives as well as future challenges are presented.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 12","pages":"Article 100185"},"PeriodicalIF":13.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced bifunctional photocatalytic performances for H2 evolution and HCHO elimination with an S-scheme CoWO4/CdIn2S4 heterojunction S-scheme CoWO4/CdIn2S4异质结增强了H2演化和HCHO去除的双功能光催化性能
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-12-01 Epub Date: 2025-08-09 DOI: 10.1016/j.actphy.2025.100155
Chengxin Chen , Hongfei Shi , Xiaoyan Cai , Liang Mao , Zhe Chen
{"title":"Enhanced bifunctional photocatalytic performances for H2 evolution and HCHO elimination with an S-scheme CoWO4/CdIn2S4 heterojunction","authors":"Chengxin Chen ,&nbsp;Hongfei Shi ,&nbsp;Xiaoyan Cai ,&nbsp;Liang Mao ,&nbsp;Zhe Chen","doi":"10.1016/j.actphy.2025.100155","DOIUrl":"10.1016/j.actphy.2025.100155","url":null,"abstract":"<div><div>Designing and establishing dual-functional S-scheme heterojunction photocatalysts with efficient separation of photoproduced carriers and intense oxidation/reduction capabilities holds immense practical value for their photocatalytic application in energy conversion and environmental purification. Herein, a novel series of <em>x</em>% CoWO<sub>4</sub>/CdIn<sub>2</sub>S<sub>4</sub> (<em>x</em>% reflects the weight ratio of CWO to CIS; <em>x</em> = 10, 20, 30, 40 and 50) composites have been systematically designed and synthesized <em>via</em> electrospinning technique and hydrothermal methods. Their photocatalytic properties were assessed through HCHO removal and H<sub>2</sub> generation under visible light. As anticipated, the optimized 30 % CWO/CIS heterojunction presented an outstanding H<sub>2</sub> generation performance of 865.14 μmol g<sup>−1</sup> h<sup>−1</sup> with AQE = 3.6 % at <em>λ</em> = 420 nm, and achieved a 69 % removal percentage for HCHO within 1 h. Meanwhile, the pathway of HCHO degradation was presented based on <em>in</em> <em>situ</em> diffuse reflectance infrared Fourier transform spectroscopy (<em>in</em> <em>situ</em> DRIFTS) technique. The great catalytic performance was primarily ascribed to the enhancement in the visible–light absorption, number of active sites, and the construction of S-scheme heterojunction. Furthermore, the S-scheme charge transfer mechanism for the CWO/CIS catalyst system has been confirmed by <em>in</em> <em>situ</em> X–ray photoelectron spectroscopy (<em>in</em> <em>situ</em> XPS), electron spin resonance data, radical capturing experiments, and density functional theory (DFT) calculations. This research contributes valuable understanding for the systematic design and development of bifunctional S-scheme heterojunctions for gaseous pollutants removal and H<sub>2</sub> production.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 12","pages":"Article 100155"},"PeriodicalIF":13.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TiO2/CdIn2S4 S-scheme heterojunction photocatalyst promotes photocatalytic hydrogen evolution coupled vanillyl alcohol oxidation TiO2/CdIn2S4 s型异质结光催化剂促进光催化析氢偶联香草醇氧化
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-12-01 Epub Date: 2025-08-26 DOI: 10.1016/j.actphy.2025.100174
Jiali Lei , Juan Wang , Wenhui Zhang , Guohong Wang , Zihui Liang , Jinmao Li
{"title":"TiO2/CdIn2S4 S-scheme heterojunction photocatalyst promotes photocatalytic hydrogen evolution coupled vanillyl alcohol oxidation","authors":"Jiali Lei ,&nbsp;Juan Wang ,&nbsp;Wenhui Zhang ,&nbsp;Guohong Wang ,&nbsp;Zihui Liang ,&nbsp;Jinmao Li","doi":"10.1016/j.actphy.2025.100174","DOIUrl":"10.1016/j.actphy.2025.100174","url":null,"abstract":"<div><div>In this paper, a dual-function TiO<sub>2</sub>/CdIn<sub>2</sub>S<sub>4</sub> S-scheme heterojunction photocatalyst was fabricated through electrospinning and hydrothermal methods for hydrogen generation coupled with the selective oxidation of vanillyl alcohol (VAL) to vanillin (VN). The results indicate that the hybrid material containing 0.5 wt% CdIn<sub>2</sub>S<sub>4</sub> possesses the best photocatalytic performance. The hydrogen generation rate reaches 403.36 μmol g<sup>−1</sup> h<sup>−1</sup>. Meanwhile, the conversion of VAL is measured to be 90.99 %. The results of experiments and density functional theory (DFT) calculations elucidate that the S-scheme heterojunction enhances the rate of charge migration and improves the efficiency of charge separation. In this system, the photoexcited holes with stronger oxidation capacity are reserved to catalyze the conversion of VAL into VN, while the photoexcited electrons with stronger reduction capacity are utilized to generate hydrogen. This study introduces a promising strategy that combines photocatalytic hydrogen generation with the selective conversion of organic compounds, offering novel insights into the development of innovative photocatalysts for effective solar energy utilization.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 12","pages":"Article 100174"},"PeriodicalIF":13.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of donor-π-acceptor type graphitic carbon nitride photocatalytic systems via molecular level regulation for high-efficient H2O2 production 通过分子水平调控制备施主-π-受体型石墨氮化碳光催化体系,用于高效产H2O2
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-12-01 Epub Date: 2025-08-19 DOI: 10.1016/j.actphy.2025.100168
Jiayao Wang , Guixu Pan , Ning Wang , Shihan Wang , Yaolin Zhu , Yunfeng Li
{"title":"Preparation of donor-π-acceptor type graphitic carbon nitride photocatalytic systems via molecular level regulation for high-efficient H2O2 production","authors":"Jiayao Wang ,&nbsp;Guixu Pan ,&nbsp;Ning Wang ,&nbsp;Shihan Wang ,&nbsp;Yaolin Zhu ,&nbsp;Yunfeng Li","doi":"10.1016/j.actphy.2025.100168","DOIUrl":"10.1016/j.actphy.2025.100168","url":null,"abstract":"<div><div>Donor-<em>π</em>-Acceptor (D-<em>π</em>-A) conjugated polymers represent an emerging class of materials featuring alternating electron donor (D), <em>π</em>-bridge (<em>π</em>), and electron acceptor (A) units, which exhibit significant potential in enhancing visible-light absorption and optimizing charge separation and redistribution. To overcome the limitations of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) while capitalizing on the structural merits of D-<em>π</em>-A systems, a series of 4-aromatic amine derivatives modified g-C<sub>3</sub>N<sub>4</sub> photocatalysts was designed and synthesized through precise molecular level regulation with tailored local electron delocalization. This strategy allows for a systematic investigation of the relationship between electron delocalization extent and photocatalytic H<sub>2</sub>O<sub>2</sub> production. Furthermore, the electron-withdrawing induction effect for regulating electron delocalization results in a substantial enhancement of photoinduced electron transfer to surface reactive sites. The as-synthesized optimum photocatalyst exhibits a remarkable H<sub>2</sub>O<sub>2</sub> production performance, which is 30.44 times higher than that of the pristine g-C<sub>3</sub>N<sub>4</sub>. The mechanism study reveals that the photocatalytic H<sub>2</sub>O<sub>2</sub> production in D-<em>π</em>-A-type g-C<sub>3</sub>N<sub>4</sub> proceeds primarily via a two-electron oxygen reduction reaction (ORR).</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 12","pages":"Article 100168"},"PeriodicalIF":13.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Designing tandem S-scheme photo-catalytic systems: Mechanistic insights, characterization techniques, and applications 设计串联s -方案光催化系统:机理见解,表征技术和应用
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-11-01 Epub Date: 2025-08-07 DOI: 10.1016/j.actphy.2025.100150
Rohit Kumar , Anita Sudhaik , Aftab Asalam Pawaz Khan , Van-Huy Nguyen , Archana Singh , Pardeep Singh , Sourbh Thakur , Pankaj Raizada
{"title":"Designing tandem S-scheme photo-catalytic systems: Mechanistic insights, characterization techniques, and applications","authors":"Rohit Kumar ,&nbsp;Anita Sudhaik ,&nbsp;Aftab Asalam Pawaz Khan ,&nbsp;Van-Huy Nguyen ,&nbsp;Archana Singh ,&nbsp;Pardeep Singh ,&nbsp;Sourbh Thakur ,&nbsp;Pankaj Raizada","doi":"10.1016/j.actphy.2025.100150","DOIUrl":"10.1016/j.actphy.2025.100150","url":null,"abstract":"<div><div>Tandem S-scheme heterojunctions have emerged as a highly promising innovation in photocatalysis, offering an effective solution for environmental remediation. Unlike traditional Z-scheme or type-II photocatalysts, the S-scheme architecture selectively retains high-energy photocarriers that actively participate in redox reactions. This unique mechanism enhances charge separation, strengthens internal electric fields, and enhance light absorption. However, the single junction of S-scheme suffers from low quantum efficiency. Therefore, engineering a multicomponent system with S-scheme effectively improve the photocatalytic properties. Tandem S-scheme systems consist of multiple semiconductors/materials with staggered energy band positions to create a stepwise or directional charge transferal mechanism. This stepwise potential gradient is responsible for more enhanced charge separation, light absorption, redox ability, stability, and overall photocatalytic activity. This article provides an in-depth overview of the principles governing tandem S-scheme heterojunctions, discussing the design of tandem S-scheme heterojunctions through semiconductor pairing, co-catalyst addition, and mediator inclusion for maximum charge mobility and minimum recombination. The various synthesis pathways are explored along with the kinetics and thermodynamics of tandem S-scheme heterojunction. A range of advanced characterization tools, including density functional theory (DFT) simulations, <em>in-situ</em> X-ray photoelectron spectroscopy (XPS), transient absorption spectroscopy (TAS), photoluminescence (PL), and electrochemical impedance spectroscopy (EIS) studies are discussed, which together offer valuable insight into electronic behaviours and interfacial dynamics. Applications of these heterojunctions are discussed across major domains such as carbon dioxide reduction, H<sub>2</sub> evolution, and degradation of organic pollutants. While the potential is clear, challenges such as complex synthesis procedures, material stability, and scalability still need to be addressed. To overcome the limitations, the article suggests future research paths. Overall, tandem S-scheme heterojunctions stand out as an excellent approach for building efficient and sustainable photocatalytic technologies.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 11","pages":"Article 100150"},"PeriodicalIF":13.5,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lignin derived carbon quantum dots and oxygen vacancies coregulated S-scheme LCQDs/Bi2WO6 heterojunction for photocatalytic H2O2 production 木质素衍生的碳量子点和氧空位协同调节S-scheme立法会ds /Bi2WO6异质结光催化生产H2O2
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-11-01 Epub Date: 2025-08-05 DOI: 10.1016/j.actphy.2025.100147
Qishen Wang , Changzhao Chen , Mengqing Li , Lingmin Wu , Kai Dai
{"title":"Lignin derived carbon quantum dots and oxygen vacancies coregulated S-scheme LCQDs/Bi2WO6 heterojunction for photocatalytic H2O2 production","authors":"Qishen Wang ,&nbsp;Changzhao Chen ,&nbsp;Mengqing Li ,&nbsp;Lingmin Wu ,&nbsp;Kai Dai","doi":"10.1016/j.actphy.2025.100147","DOIUrl":"10.1016/j.actphy.2025.100147","url":null,"abstract":"<div><div>This study presents an innovative photocatalytic system utilizing waste biomass resources for sustainable synthesis of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) and high-value lignin derivatives. A lignin derived carbon quantum dots (LCQDs) loaded S-scheme heterojunction photocatalyst LCQDs/Bi<sub>2</sub>WO<sub>6</sub> (LCD/BWO) was synthesized <em>via</em> hydrothermal method. The LCD/BWO composite demonstrates exceptional H<sub>2</sub>O<sub>2</sub> production rate (3.776 mmol h<sup>−1</sup> g<sup>−1</sup>) and maintains 89.72 % activity retention after 5 cycles under visible light irradiation, representing a 5.97-fold enhancement over catalyst BWO-A. The performance leap stems from synergistic effects between LCQDs and oxygen vacancies (OVs) defects: the unique up-conversion luminescence of LCQDs combined with S-scheme charge transfer mechanism enhances light absorption and carrier separation efficiency, while interfacial OVs act as electron traps to prolong carrier lifetime. <em>In situ</em> electron paramagnetic resonance (<em>In situ</em> EPR) analysis revealed substantial generation of •O<sub>2</sub><sup>−</sup> and •OH radicals on catalyst surfaces. Band structure characterization confirms optimized H<sub>2</sub>O<sub>2</sub> synthesis through consecutive single-electron reactions. Synergistic regulation of band positions significantly enhances oxygen reduction reaction (ORR) and water oxidation reaction (WOR) capabilities. As lignin primarily originates from agricultural/forestry waste, this work not only provides new design strategies for efficient photocatalytic systems but also advances high-value utilization of waste biomass resources.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 11","pages":"Article 100147"},"PeriodicalIF":13.5,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular sieve-mediated indium oxide catalysts for enhancing photocatalytic CO2 hydrogenation 分子筛催化氧化铟催化剂增强光催化CO2加氢作用
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-11-01 Epub Date: 2025-07-22 DOI: 10.1016/j.actphy.2025.100133
Qinhui Guan , Yuhao Guo , Na Li , Jing Li , Tingjiang Yan
{"title":"Molecular sieve-mediated indium oxide catalysts for enhancing photocatalytic CO2 hydrogenation","authors":"Qinhui Guan ,&nbsp;Yuhao Guo ,&nbsp;Na Li ,&nbsp;Jing Li ,&nbsp;Tingjiang Yan","doi":"10.1016/j.actphy.2025.100133","DOIUrl":"10.1016/j.actphy.2025.100133","url":null,"abstract":"<div><div>In the realm of photocatalytic CO<sub>2</sub> hydrogenation, the adsorption-desorption behaviors and dynamics of photogenerated carriers are pivotal determinants of the kinetic processes and overall efficiency of photocatalytic reactions. Herein, 5A molecular sieve-functionalized In<sub>2</sub>O<sub>3</sub> composites (denoted as IO@5A-<em>x</em>wt%) were fabricated through a facile impregnation-calcination method. Among them, the IO@5A-5wt% composite, with the optimized loading amount of 5A molecular sieves, showcases outstanding performance in photocatalytic conversion of CO<sub>2</sub> to CO, achieving a CO production rate of 2610.55 μmol g<sup>−1</sup> h<sup>−1</sup>, which is 19 times higher than that of pristine In<sub>2</sub>O<sub>3</sub>. Moreover, the IO@5A-5wt% composite maintains acceptable catalytic stability after a prolonged experiment lasting 45 h and total of 108 cycles. A comprehensive series of characterization techniques and performance evaluations reveal that the incorporation of 5A molecular sieves significantly modulates the adsorption-desorption behavior and hole dynamics during photocatalytic reactions. The multi-channel architecture of 5A molecular sieves, featuring suitable pore sizes, effectively enhances CO<sub>2</sub> adsorption. Meanwhile, the surface hydroxyl groups of 5A molecular sieves facilitate the transfer of photogenerated holes, thereby suppressing the recombination of photogenerated carriers. Additionally, the reaction product H<sub>2</sub>O desorbs more readily from the catalyst surface. These synergistic effects collectively constitute the key mechanism underlying the enhanced photocatalytic performance of the IO@5A-5wt% composite.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 11","pages":"Article 100133"},"PeriodicalIF":13.5,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Steering charge dynamics and surface reactivity for photocatalytic selective methane oxidation to ethane over Au/Ti-CeO2 Au/Ti-CeO2光催化选择性甲烷氧化制乙烷的转向电荷动力学和表面反应性
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-11-01 Epub Date: 2025-08-07 DOI: 10.1016/j.actphy.2025.100153
Xinyu Xu , Jiale Lu , Bo Su , Jiayi Chen , Xiong Chen , Sibo Wang
{"title":"Steering charge dynamics and surface reactivity for photocatalytic selective methane oxidation to ethane over Au/Ti-CeO2","authors":"Xinyu Xu ,&nbsp;Jiale Lu ,&nbsp;Bo Su ,&nbsp;Jiayi Chen ,&nbsp;Xiong Chen ,&nbsp;Sibo Wang","doi":"10.1016/j.actphy.2025.100153","DOIUrl":"10.1016/j.actphy.2025.100153","url":null,"abstract":"<div><div>The selective oxidation of methane to value-added chemicals under mild conditions presents a sustainable yet challenging route, hindered by sluggish CH<sub>4</sub> activation and overoxidation. Herein, we report a delicate strategy combining Ti doping and Au loading to construct a high-performance Au/Ti-CeO<sub>2</sub> photocatalyst for ethane production from oxidative methane coupling. The optimized catalyst achieves a C<sub>2</sub>H<sub>6</sub> production rate of 2971.4 μmol g<sup>−1</sup> h<sup>−1</sup> with 85.1 % C<sub>2+</sub> selectivity, stably operating over 20 reaction cycles. <em>In situ</em> X-ray photoelectron spectroscopy, electron paramagnetic resonance, and diffuse reflectance infrared Fourier transform spectroscopy analyses reveal that Ti doping introduces impurity energy levels into CeO<sub>2</sub>, promoting directional electron migration to surface Au nanoparticles (NPs) <em>via</em> a built-in electric field. The Au NPs act as electron accumulation sites to activate O<sub>2</sub>, facilitate ∗CH<sub>3</sub> radical coupling into C<sub>2</sub>H<sub>6</sub>, and stabilize reactive intermediates, thus enhancing charge separation and suppressing intermediate overoxidation. This study highlights the significance of synergistic modulation <em>via</em> elemental doping and cocatalyst engineering in tuning charge dynamics and surface reactivity for efficient photocatalytic methane conversion.</div></div>","PeriodicalId":6964,"journal":{"name":"物理化学学报","volume":"41 11","pages":"Article 100153"},"PeriodicalIF":13.5,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144841274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boosting photocatalytic CO2 methanation through TiO2/CdS S-scheme heterojunction and fs-TAS mechanism study TiO2/CdS S-scheme异质结促进光催化CO2甲烷化及fs-TAS机理研究
IF 13.5 2区 化学
物理化学学报 Pub Date : 2025-11-01 Epub Date: 2025-08-05 DOI: 10.1016/j.actphy.2025.100148
Yiting Huo , Xin Zhou , Feifan Zhao , Chenbin Ai , Zhen Wu , Zhidong Chang , Bicheng Zhu
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