期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 412, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125186
关键词
Pharmaceutical active compounds; Bismuth oxyhalides; Theoretical calculation; Challenges and opportunities
资金
- Fundamental Research Fund for the Central Universities [2018ZY16, 2015ZCQ-HJ-02]
- National Natural Science Foundation of China [51578066, 51608036]
- Beijing Natural Science Foundation [8182037]
- Special S&T Project on Treatment and Control of Water Pollution [2018ZX07301-007]
- Research Institute of Advanced Eco-Environmental Protection Technology, Beijing Forestry University [2018HXFW-HJ-0004]
Bismuth oxyhalides (BiOX)-based photocatalysis is capable of efficiently removing pharmaceutical active compounds (PhACs), but faces challenges such as rapid recombination of photogenerated electron-hole pairs and inherent instability of structure. Recent modification studies have focused on facet control, elemental doping, bismuth-rich strategies, defect engineering, and heterojunction to address these issues.
Pharmaceutical active compounds (PhACs), as a kind of widely used pharmaceutical drugs, has attracted much attention. The bismuth oxyhalides (BiOX)-based photocatalysis can remove PhACs efficiently due to its unique layered structure, optical and electronic properties. Nevertheless, the rapid recombination of photogenerated electron-hole pairs, and the inherent instability of structure have limited its practical application. In order to solve these problems, recent modification studies tend to focus on facet control, elemental doping, bismuth-rich strategies, defect engineering and heterojunction. Therefore, the objective of this review is to summarize the recent developments in multiply modified strategies for PhACs degradation. The synthesis methods, photocatalytic properties and the enhancement mechanism are elaborated. Besides, based on theoretical calculation, the reactive sites of typical PhACs attacked by different reactive oxygen species were also proposed. Subsequently, challenges and opportunities in applications are also featured which include factors, viz., dissolution of halogen ions, instability under visible light, applications of real water/wastewater, intermediates and byproducts toxicity analysis of BiOX-based photocatalysis. Finally, the perspectives of BiOX-based photocatalysis for PhACs photodegradation in actual water applications are highlighted.
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