Enhanced Visible Light Photocatalytic Activity of Br-Doped Bismuth Oxide Formate Nanosheets

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2015 Oct 28

PMID 26506332

Authors

Xin Feng

Wen Cui

Junbo Zhong

Xiaoying Liu

Fan Dong

Yuxin Zhang

Affiliations

Soon will be listed here.

Abstract

A facile method was developed to enhance the visible light photocatalytic activity of bismuth oxide formate (BiOCOOH) nanosheets via Br-doping. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller surface area, UV-vis diffuse reflectance spectroscopy, photoluminescence spectra, and N₂ adsorption-desorption isotherms measurement. The Br- ions replaced the COOH- ions in the layers of BiOCOOH, result in a decreased layer distance. The photocatalytic activity of the as-prepared materials was evaluated by removal of NO in qir at ppb level. The results showed that the Br-doped BiOCOOH nanosheets showed enhanced visible light photocatalytic activtiy with a NO removal of 37.8%. The enhanced activity can be ascribed to the increased visible light absorption and the promoted charge separation.

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