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Cu-based S-scheme photocatalysts.

Mahmoud Sayed^1,2, Kezhen Qi³, Xinhe Wu¹

¹Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Road, Wuhan 430078, P. R. China. wuxinhe@hbnu.edu.cn.

Chemical Society Reviews

|April 2, 2025

Summary

Copper-based S-scheme heterojunctions show great promise for photocatalysis. This review details their design, applications in energy and environment, and future research directions for enhanced performance.

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Area of Science:

Materials Science
Photocatalysis
Green Chemistry

Background:

S-scheme heterojunctions are a key area in photocatalysis.
Copper (Cu) compounds, including oxides, sulfides, and MOFs, possess favorable photocatalytic properties like narrow bandgaps and suitable band positions.

Purpose of the Study:

To comprehensively review recent advancements in Cu-based S-scheme heterojunctions.
To highlight their potential in sustainable energy conversion and environmental remediation.
To summarize the fundamentals of S-scheme charge transfer and design principles.

Main Methods:

Categorization of Cu-based photocatalytic materials by chemical composition.
Analysis of their integration into S-scheme heterojunctions.
Examination of the implications of S-scheme charge transfer on catalytic activity.

Main Results:

Cu-based S-scheme heterojunctions are effective for hydrogen evolution, CO2 reduction, H2O2 generation, N2 fixation, and pollutant degradation.
The S-scheme mechanism significantly enhances photoinduced charge separation and catalytic activity.
Various Cu-based materials, including oxides, sulfides, and MOFs, are successfully integrated into these heterojunctions.

Conclusions:

Cu-based S-scheme heterojunctions offer considerable potential for addressing energy and environmental challenges.
Further research is needed to develop novel catalysts and elucidate underlying mechanisms for improved performance.