Journal
APPLIED SURFACE SCIENCE
Volume 341, Issue -, Pages 190-195Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.02.174
Keywords
AgBr; Ag2O; Heterostructure; Photocatalytic; Methyl orange; Visible light
Categories
Funding
- National Natural Science Foundation of China [21103042]
- Program for Changjiang Scholars and Innovation Research Team in University [PCS IRT1126]
- Natural Science Foundation of Henan University [2012YBZR001]
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AgBr/Ag2O heterostructure photocatalysts were synthesized by a simple in situ anion-exchange route. The ratio of AgBr and Ag2O in the composites could be easily controlled by adjusting the concentration of NaBr solution. The AgBr/Ag2O-5 heterostructure exhibited a much higher photocatalytic activity than the pure AgBr and Ag2O particles in photodegradation of methyl orange (MO) under visible light irradiation. On the basis of the characterization by X-ray diffraction, photoluminescence (XRD), X-ray photoelectron spectroscope (XPS), and UV-vis diffuse reflectance spectra (DRS), a mechanism was proposed to account for the enhanced photocatalytic activity of AgBr/Ag2O heterostructure. (C) 2015 Elsevier B.V. All rights reserved.
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