高等学校化学学报2024，Vol.45Issue(12)：143-151,9.DOI:10.7503/cjcu20240298
双S型YVO4/TiO2/BiVO4异质结的构筑及光催化CO2还原性能
Construction of Double S-scheme YVO4/TiO2/BiVO4 Heterojunction and Its Photocatalytic CO2 Reduction Performance
摘要
Abstract
The double S-scheme heterojunction of YVO4/TiO2/BiVO4 compoite fibers material was prepared by one-step hydrothermal method using TiO2 electrospun nanofibers as substrate.The structures of the composite catalyst were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,X-ray photoelectron spectroscopy,ultraviolet visible diffuse reffectance spectroscopy and photoluminescence.The performance of photocatalytic CO2 reduction over the composite catalyst under simulated sunlight was studied.The results show that photocatalytic activity of YVO4/TiO2/BiVO4 composite fibers was investigated via production of methanogenesis from photocatalytic reduction of CO2.The CO2 reduction capability of composite fibers was better compared to that of monomer materials.The photocatalytic production rate of CH4 and CH3OH of YVO4/TiO2/BiVO4 were 13.88 and 3.46 μmol·g‒1·h‒1,respectively.The increased photocatalytic activity of YVO4/TiO2/BiVO4 is attributed to the formation of heterojunctions between YVO4,BiVO4 and TiO2 as well as the S-scheme charge transfer mode of the photogenerated carriers,both of which are conducive to separation efficiency of photo-generated carriers and photocatalytic CO2 reduction activity.关键词
S型异质结/复合纤维/静电纺丝/光催化二氧化碳还原Key words
S-scheme heterojunction/Composite fiber/Electrospinning/Photocatalytic CO2 reduction分类
化学化工引用本文复制引用
曹铁平,李跃军,孙大伟..双S型YVO4/TiO2/BiVO4异质结的构筑及光催化CO2还原性能[J].高等学校化学学报,2024,45(12):143-151,9.基金项目
国家自然科学基金(批准号:21573003)资助.Supported by the National Natural Science Foundation of China(No.21573003). （批准号:21573003）
