Carbon quantum dots modified semiconductor composite photocatalysts for degradation of organic pollutants in water

被引：0
|
作者：
Zhang P. [1 ]
Ding S. [1 ]
Gao J. [1 ]
Zhao M. [1 ]
Yu H. [1 ]
Liu Y. [1 ]
Gu L. [1 ]
机构：
[1] School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 10期
关键词：
carbon quantum dots (CQDs); composites; degradation; organic pollutants; photocatalyst; semiconductor;
D O I：
10.16085/j.issn.1000-6613.2022-2044
中图分类号：
学科分类号：
摘要：
The primary causes of the low efficiency and limited use of conventional photocatalysts in the degradation of organic pollutants in water are the low effective utilisation of visible light and the fast recombination rate of photogenerated charge carrier. Carbon quantum dots (CQDs), a novel nano-zero-dimensional material that modifies semiconductor photocatalysts, can inhibit the recombination of photogenerated carriers, speed up the separation and transfer of carriers, improve the spectral response range, improve the performance of adsorption, promote the reduction of transition metals in the indirect oxidation process and effectively enhance the photocatalytic degradation of organic pollutants in water. This paper reviewed the application of CQDs modified semiconductor composite photocatalyst materials in the degradation of various organic pollutants in water. It focused on the synthesis strategy of CQDs and its modified semiconductor composite photocatalyst materials as well as the enhancement of CQDs in multiphase photocatalytic systems. Furthermore, a brief description was given of the effects of the photocatalytic experimental parameters and the modification of CQDs on the photocatalytic reaction activity. Finally, this paper summarized the unresolved issues during the development of CQDs modified semiconductor composite photocatalysts and gave an outlook on the future development direction. © 2023 Chemical Industry Press. All rights reserved.
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页码：5487 / 5500
页数：13
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