Abstract Au as a cocatalyst was deposited on the surface of solid solution Bi0.5Y0.5VO4 by a photodeposition method for photocatalytic reduction of CO2. Au particles loaded on the surface of Bi0.5Y0.5VO4 apparently enhanced the photocatalytic activity of CO2 reduction toward CO evolution. The highest rate of CO evolution was obtained over 1.0 wt% Au/Bi0.5Y0.5VO4, reaching 3.5 times of that of bare Bi0.5Y0.5VO4. The improved photocatalytic performance was assigned to the lower overpotential of Au/Bi0.5Y0.5VO4 for CO evolution than that of bare Bi0.5Y0.5VO4 as well as the formation of Schottky barrier, which promotes the separation of photogenerated electron–hole pairs.

中文翻译：

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Au作为助催化剂负载在固溶体Bi0.5Y0.5VO4上以提高光催化CO2还原活性

摘要 通过光沉积法将Au作为助催化剂沉积在固溶体Bi0.5Y0.5VO4表面，用于CO2的光催化还原。负载在 Bi0.5Y0.5VO4 表面的 Au 颗粒明显增强了 CO2 还原对 CO 析出的光催化活性。在超过 1.0 wt% Au/Bi0.5Y0.5VO4 时获得最高的 CO 析出率，达到裸 Bi0.5Y0.5VO4 的 3.5 倍。改进的光催化性能归因于 Au/Bi0.5Y0.5VO4 的 CO 析出过电位低于裸 Bi0.5Y0.5VO4 以及肖特基势垒的形成，这促进了光生电子 - 空穴对的分离。