Photocatalytic CO2 Reduction by Modified g-C3N4

IF 10.8 2区化学 Q1 CHEMISTRY, PHYSICAL 物理化学学报 Pub Date : 2024-12-01 DOI:10.3866/PKU.WHXB202408005

Xuejiao Wang , Suiying Dong , Kezhen Qi , Vadim Popkov , Xianglin Xiang

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Abstract

The use of carbon-based fuels causes a significant increase in CO₂ emissions, posing a serious threat to the environment. This review explores the potential application of graphitic carbon nitride (g-C₃N₄) in photocatalytic CO₂ reduction as a strategy to mitigate global warming. The effectiveness of g-C₃N₄ (gCN) in this process is hindered by several factors, including rapid exciton recombination, limited solar light absorption, and a lack of active sites for conducting the reduction. To address these challenges, various amendment techniques have been executed, such as adjusting the morphology of g-C₃N₄, doping it with different atoms, and forming heterojunctions with other semiconductors. This review highlights the role of S-scheme heterojunctions in expanding the photocatalytic activity of g-C₃N₄ and emphasizes that, despite its potential as a photocatalyst for CO₂ reduction, further research and innovation are essential to overcome its current limitations.

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