Journal
CHINESE JOURNAL OF CATALYSIS
Volume 36, Issue 12, Pages 2119-2126Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(15)60974-3
Keywords
Photocatalysis; Heterojunction; Bismuth trioxide; Bismuth oxyiodide; Methyl orange
Funding
- National Natural Science Foundation of China [21273281]
- National Basic Research Program of China (973 Program) [2013CB632405]
Ask authors/readers for more resources
To improve beta-Bi2O3 photocatalysis, we couple beta-Bi2O3 with BiOI to form beta-Bi2O3/BiOI heterojunctions through an in-situ treatment with hydriodic acid. The prepared heterojunctions are characterized with X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, ultra violet-diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. Upon visible-light irradiation (lambda > 420 nm), the beta-Bi2O3/BiOI heterojunctions, especially with the molar ratio of HI to beta-Bi2O3 at 0.4, exhibit much higher photocatalytic activity than pure beta-Bi2O3 and BiOI for the degradation of methyl orange. The efficient separation of photogenerated electron-hole pairs across the interface of the heterojunction between beta-Bi2O3 and BiOI would be responsible for the enhanced photocatalytic performances. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available