UV light-induced oxygen doping in graphitic carbon nitride with suppressed deep trapping for enhancement in CO2 photoreduction activity

Xiaolong Zhao,Xiaoping Yi,Wending Pan,Yifei Wang,Shijing Luo,Yingguang Zhang,Ruijie Xie,Dennis Y. C. Leung

Journal of Materials Science & Technology（2023）

引用 9|浏览13

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摘要

•Oxygen (O) element is introduced in the bulk graphitic carbon nitride (CN) for the first time through a precursor pretreatment by ultraviolet (UV) light irradiation.•The doped O non-metal photocatalyst of CN increased visible light absorption and enhanced carrier density.•The optimized sample has lower charge recombination and suppressed electron deep trapping.•The optimized sample shows enhanced photoreduction activity of CO2 to CH4.

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关键词

UV light,Oxygen doping,Charge transfer,Graphitic carbon nitride,CO2 reduction

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