Enhanced Visible Light Photocatalytic Activity of Br-Doped Bismuth Oxide Formate Nanosheets.
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.
Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China. fengxinsea@163.com.
Xin
X
Feng
Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China. 13527368524@163.com.
Wen
W
Cui
Key Laboratory of Green Catalysis of Sichuan Institutes of High Education, Sichuan University of Science and Technology, Zigong 643000, China. liuxiaoying0202@foxmail.com.
Junbo
J
Zhong
National Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China. junbozhong@163.com.
Xiaoying
X
Liu
Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China. dfctbu@126.com.
Fan
F
Dong
National Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China. zhangyuxin@cqu.edu.cn.
Yuxin
Y
Zhang
D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D005561:Formates / Q000138:chemical synthesis*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D055668:Photochemical Processes; D016062:Porosity; D013056:Spectrophotometry, Ultraviolet; D013499:Surface Properties; D014961:X-Ray Diffraction
D005561:Formates; C033301:bismuth oxide; D001729:Bismuth
BiOCOOH; Br-doping; NO removal; charge separation; visible-light photocatalysis