Synthesis of novel BiOBr/Bio-veins composite for photocatalytic degradation of pollutants under visible-light

被引：18
|
作者：
Zhou, Hu [1 ]
Qu, Wenjia [1 ]
Wu, Ming [1 ]
Yuan, Zhengqiu [1 ]
Jian, Jian [1 ]
Zhang, Lei [1 ]
Huang, Tiefan [1 ]
机构：
[1] Hunan Univ Sci & Technol, Funct Film Mat Engn Res Ctr Hunan Prov, Sch Chem & Chem Engn,Hunan Prov Key Lab Adv Mat N, Key Lab Theoret Organ Chem & Funct Mol,Minist Edu, Xiangtan 411201, Peoples R China
来源：
SURFACES AND INTERFACES | 2022年 / 28卷
基金：
中国国家自然科学基金;
关键词：
BiOBr; Biological veins; composite; visible light; photodegradation; RHODAMINE-B; FACILE SYNTHESIS; TIO2; FABRICATION; ADSORPTION; HETEROJUNCTIONS; NANOPARTICLES; NANOSHEETS; KINETICS; MATRIX;
D O I：
10.1016/j.surfin.2021.101668
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel BiOBr/Bio-vein photocatalyst was synthesized with a wet drop addition method, where the substrate biological veins (Bio-veins) were obtained with a green and environmentally-friendly multiple route. BiOBr/Bio-veins composite show larger visible light adsorption compared with pure BiOBr, and the size of BiOBr nanosheet from BiOBr/Bio-veins composite is smaller than that of pure BiOBr. BiOBr/Bio-veins composite shows highly photocatalytic degradation of Rhodamine B (RhB) under visible light irradiation. Reactive species trapping experiments and electron paramagnetic resonance (EPR) tests were used to explore photodegradation mechanism of BiOBr/Bio-veins, which demonstrated that superoxide radicals (center dot O-2(-)) and holes (h(+)) were the main active groups for photocatalytic degradation. Moreover, BiOBr/Bio-veins composite can be easily recovered without centrifugation and filtration. This study provides novel natural biological materials to immobilize photocatalyst particles with highly photocatalytic degradation of pollutants.
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页数：8
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