低碳化学与化工2026，Vol.51Issue(2)：20-30,11.DOI:10.12434/j.issn.2097-2547.20250453
Ti3C2 Mxene/Ag3VO4异质结催化剂的构建及其光催化还原CO2性能研究
Study on construction of Ti3C2 MXene/Ag3VO4 heterojunction catalysts and their photocatalytic CO2 reduction performances
摘要
Abstract
Traditional photocatalytic CO2 reduction systems typically require a large amount of substantial sacrificial agents to facilitate the reduction process.How to design efficient and stable catalysts to achieve a photocatalytic reaction without sacrificial agents has always been a research hotspot in this field.A series of novel Schottky heterojunction photocatalysts Ti3C2/Ag3VO4(TAx,x=m(Ag3VO4)/m(Ti3C2))were prepared by physical mixing method.Their structural properties were characterized by XRD,SEM and TEM,etc.,and their photocatalytic CO2 reduction performance and mechanism were systematically studied.The results show that Ag3VO4 nanoparticles are uniformly dispersed onto the surface of Ti3C2 nanosheets,forming an intimate interfacial structure.Under sacrificial-agent-free conditions and visible light irradiation(λ≥420 nm)for 3 h,TA1.5 exhibits the best photocatalytic CO2 reduction performance.The yields of CO and CH4 reach 80.67 μmol/g and 33.67 μmol/g,respectively.The yield of CO of TA1.5 is approximately 18.5 times and 17.2 times higher than that of Ti3C2 and Ag3VO4,respectively.The Schottky barrier formed between Ti3C2 and Ag3VO4 effectively promotes the directional migration of photogenerated electrons from Ag3VO4 to Ti3C2,thereby suppressing charge carrier recombination and significantly enhancing the photocatalytic CO2 reduction performance.关键词
Ti3C2 MXene/Ag3VO4/物理混合/肖特基异质结/光催化还原CO2Key words
Ti3C2 MXene/Ag3VO4/physical mixing/Schottky heterojunction/photocatalytic CO2 reduction分类
化学化工引用本文复制引用
李润,王茂颖,孙龙帅,孟欣玥,王传义,朱鹏飞..Ti3C2 Mxene/Ag3VO4异质结催化剂的构建及其光催化还原CO2性能研究[J].低碳化学与化工,2026,51(2):20-30,11.基金项目
国家自然科学基金(22006097) （22006097）
陕西省自然科学基金(2025JC-YBMS-151) （2025JC-YBMS-151）
陕西省青年创新团队项目(22JP009). （22JP009）
