Issue 43, 2021

Recent advances in bismuth oxyhalide photocatalysts for degradation of organic pollutants in wastewater

Abstract

Photocatalysis has been considered as an environmental-friendly strategy for degradation of organic pollutants to the nontoxic products of H2O and CO2. Compared to metal oxide semiconductors, BiOX (X = Cl, Br and I) photocatalysts exhibit some advantages, such as, unique layered structure, good chemical stability and superior photocatalytic activity. This review provides an overview on the controllable synthesis of BiOX-based photocatalysts and their application in photodegradation of organic pollutants. Firstly, the controllable synthesis of BiOX is introduced, including hydrothermal, solvothermal, hydrolysis, precipitation, two-phase methods, ultrasonic/microwave-assisted methods, and physical methods. Then, the doping and surface modification of BiOX are summarized, including non-metal doping, metal doping, dual doping, and the modification by introducing surface terminations or carriers. In addition, the heterojunctions of BiOX/BiOY and BiOX/BimOnXz are introduced. At last, the promising research trends of BiOX-based photocatalysts are put forward. The main purpose is providing practical guidelines for developing high-performance BiOX photocatalysts.

Graphical abstract: Recent advances in bismuth oxyhalide photocatalysts for degradation of organic pollutants in wastewater

Supplementary files

Article information

Article type
Review Article
Submitted
30 Jul 2021
Accepted
02 Aug 2021
First published
06 Aug 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 26855-26875

Recent advances in bismuth oxyhalide photocatalysts for degradation of organic pollutants in wastewater

Y. Li, H. Jiang, X. Wang, X. Hong and B. Liang, RSC Adv., 2021, 11, 26855 DOI: 10.1039/D1RA05796K

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