Regulation of visible-light-driven photocatalytic degradation of Rhodamine B on BiOBr via zeta potential

被引：0

作者：

Chang-cun Tang

Yan-fen Fang

Xin-qiang Cao

Hai-lin Tian

Ying-ping Huang

机构：

[1] China Three Gorges University,College of Biological and Pharmaceutical Sciences

[2] China Three Gorges University,China Engineering Research Center of Eco

[3] China Three Gorges University,environment in Three Gorges Reservoir Region, Ministry of Education

来源：

Research on Chemical Intermediates | 2020年 / 46卷

关键词：

BiOB; Photocatalytic activity; Zeta potential; Ethanol;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper, bismuth oxybromide (BiOBr) photocatalysts were synthesized in the presence of tetrabutylammonium bromide (TBAB) at the different volume fractions of ethanol/water and named as BiOBr0, BiOBr20, BiOBr50, BiOBr80 and BiOBr100, respectively. The samples were characterized and applied to the degradation of Rhodamine B (RhB) under visible-light irradiation (λ ≥ 420 nm). The results indicated that both TBAB and ethanol significantly affected the crystal phase, morphology and surface charge distribution of BiOBr. The exposed (110) faces of BiOBr with Bi3+ sites contributed to its photocatalytic activity via the enhanced separation of electrons and photogenerated holes as well as the better photo-stability. BiOBr50 showed the optimal activity for the photodegradation of RhB. Superoxide radical (O2·−) as the dominant active species was responsible for the degradation of RhB.

引用

页码：509 / 520

页数：11

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