Effect of Reducing Agent NaBH4 on Photocatalytic Properties of Bi/BiOBr/Bi2WO6 Composites. Issue 34 (11th September 2019)

• Record Type: Journal Article
• Authors: Gao, Zhanyao; Yao, Binghua; Ji, Liangliang; Xu, Tiantian
• Is Part Of: ChemistrySelect. Volume 4:Issue 34(2019)
• Page Start: 10065
• Page End: 10071
• Publication Date: 2019-09-11
• Subjects: BiOBr nanosheets -- Bi2WO6 nanospheres -- heterojunction -- in situ reduction -- photocatalytic activity -- photogenerated electron pair; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201902150
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: 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/Bi2 WO6 composite photocatalyst was successfully synthesized by ahydrothermal method with BiOBr as the precursor. The effect of reducing agent sodium borohydride (NaBH4 ) 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/Bi2 WO6 reached 96.1%, which was about 6.7% higher than that on BiOBr/Bi2 WO6 . And the reaction rate was 1.4 times of BiOBr/Bi2 WO6 . 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/Bi2 WO6 photocatalytic materials. Abstract : Bi/BiOBr/Bi2 WO6 composite photocatalyst was successfully synthesized by hydrothermal method with BiOBr as the precursor. The effect of reducing agent sodium borohydride (NaBH4 ) on the structure and photocatalytic activity of the composite was studied. All samples were characterized and evaluated. The results showed that when the concentration of sodium borohydride was 20 mmol/L, the photocatalyst prepared was the most active, which is caused by the changing of the energy band structure of composite.