Recent advances in 3D g-C3N4 composite photocatalysts for photocatalytic water splitting, degradation of pollutants and CO2 reduction

By Xibao Li, J. Xiong, Xiaoming Gao, Juntong Huang, Zhijun Feng, Zhi Chen, Yongfa Zhu. Journal of Alloys and Compounds, 2019

235 citations recorded by the source corpus.

Abstract Recently, g-C 3 N 4 has exhibited excellent catalytic performances in photocatalytic water splitting for H 2 and O 2 generation, degradation of pollutants and CO 2 reduction. However, the bulk g-C 3 N 4 demonstrates some disadvantages such as low specific surface area, high defect density, fast recombination possibility of photogenerated electron-hole pairs, and non-recyclable characteristics, leading to low photocatalytic performance and efficiency. The three-dimensional (3D) network-like g-C 3 N 4 composite materials constructed by nanotechnology can effectively improve the adsorption capacity, light response, structure stability and recyclability of photocatalysts, which results in a significant increase in the photocatalytic performance and utilization. It is a novel way to achieve high-efficient separation of photogenerated electron-hole pairs and improve photocatalytic activity. In this review, the recent research progresses especially the synthesis strategy of 3D g-C 3 N 4 composite photocatalysts and their applications for photocatalytic water splitting, degradation of organic pollutants and CO 2 reduction are firstly and systematically introduced and discussed. The review and prospect of 3D g-C 3 N 4 composite materials can provide some new ideas and directions for the research and development of 3D g-C 3 N 4 composite photocatalysts with high activity, strong adsorption, facile recyclability, and no secondary pollution.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/8fe0335e60b53fa788824155a7bef4b6be52f6ec