In-situ generation of Au–carbon–TiO2 Ohmic junction from Ti3C2 MXene for efficient photocatalytic H2 evolution

Huanmin Liu,Chao Wu,Kangle Lv,Dingguo Tang,Qin Li

Journal of Materials Science & Technology（2024）

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摘要

•Au-Ti3C2 MXene was stepwise oxidized by CO2 and air to derive carbon-bridged Au-TiO2•The in situ loaded Au on the Ti3C2 surface could accelerate its oxidation into C-TiO2•The Au/C-TiO2 photocatalyst exhibited dramatically improved H2 evolution activity•The carbon extended the distance between the semiconductor and H2-evolution sites•Compared with Au-TiO2, the Au/C-TiO2 exhibited 27 times higher photoactivity

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关键词

Photocatalytic hydrogen production,Ti3C2 MXene,Carbon layer,TiO2,Ohmic junction

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