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Effect of Reducing Agent NaBH 4 on Photocatalytic Properties of Bi/BiOBr/Bi 2 WO 6 Composites
Author(s) -
Gao Zhanyao,
Yao Binghua,
Ji Liangliang,
Xu Tiantian
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902150
Subject(s) - sodium borohydride , photocatalysis , materials science , catalysis , reducing agent , composite number , heterojunction , norfloxacin , degradation (telecommunications) , chemical engineering , composite material , chemistry , organic chemistry , antibiotics , telecommunications , biochemistry , optoelectronics , ciprofloxacin , computer science , engineering
With the improvement of human living standards, a large amount of drugs in the fields of medicine, agriculture, animal husbandry and other fields have being invested and used, resulting in an increasing demand for cleaning antibiotics to clean water sources. In this study, Bi/BiOBr/Bi 2 WO 6 composite photocatalyst was successfully synthesized by ahydrothermal method with BiOBr as the precursor. The effect of reducing agent sodium borohydride (NaBH 4 ) on the structure and photocatalytic activity of the composite was studied. The results showed that most active photocatalyst was obtained when 20 mmol/L of sodium borohydride was used. The degradation of norfloxacin on Bi/BiOBr/Bi 2 WO 6 reached 96.1%, which was about 6.7% higher than that on BiOBr/Bi 2 WO 6 . And the reaction rate was 1.4 times of BiOBr/Bi 2 WO 6 . The heterojunction formed by the three substances was the main reason for the enhanced catalytic activity. These results were beneficial for the practical application of high performance Bi/BiOBr/Bi 2 WO 6 photocatalytic materials.