Construction of carbon dots modified Cl-doped Bi2WO6 hollow microspheres for boosting photocatalytic degradation of tetracycline under visible light irradiation

被引：31

作者：

Yan, Fanyong ^{[1
]}

Wang, Yao ^{[1
]}

Yi, Chunhui ^{[1
]}

Xu, Jinxia ^{[2
]}

Wang, Bowei ^{[3
]}

Ma, Ran ^{[1
]}

Xu, Ming ^{[2
]}

机构：

[1] Tiangong Univ, Natl Ctr Int Joint Res Separat Membranes, Sch Chem Engn & Technol, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

[2] Tiangong Univ, Sch Chem, Tianjin 300387, Peoples R China

[3] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Carbon dots; Photocatalysis; Electron-hole pairs; Degradation; Tetracycline hydrochloride; QUANTUM DOTS; WATER; PERSPECTIVE; PERFORMANCE; TIO2;

D O I：

10.1016/j.ceramint.2022.05.258

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The composition of composite photocatalysts with both broad spectral response and efficacious separation of photoinduced carriers were essential. The CDs were installed on the surface of the three-dimensional hollow microsphere nanophotocatalyst Bi2WO6 by the hydrothermal approach. Crystal structure, morphology and composition revealed the synthesis of the composite catalyst. The higher photocatalytic capability of 0.5% CDs/ Cl-Bi2WO6 (0.0317 min(-1)) was observed in the degradation procedure, explained that the doping of Cl and the presence of CDs remarkably strengthened the visible light capture and depressed the rate of electron-hole pair complexation. Notably, scavenger-quenching assays results verified that activities of h(+), center dot OH and center dot O-2(-) were the primary actors in the degradation procedure. Ultimately, the degradation mechanism of a feasible TCH was submitted. This study presented a novel concept for the exploitation of composite nanophotocatalysts for the effective degradation of organic pollutants.

引用

页码：7214 / 7222

页数：9

共 44 条

[1] Enhanced visible-light-driven photocatalytic degradation by metal wire-mesh supported Ag/flower-like Bi2WO6 photocatalysts [J].