Journal
MATERIALS RESEARCH BULLETIN
Volume 66, Issue -, Pages 262-267Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.02.024
Keywords
CdS; BiPO4; Heterojunction; Photocatalytic activity
Categories
Funding
- National Natural Science Foundations of China [21106138]
- College Student Research Innovation Program of China University of Geosciences, Beijing [2014AB018]
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A series of CdS/BiPO4 heterojunction photocatalysts with the visible-light response were synthesized by the solvothermal method. The resulting products were characterized by X-ray diffraction, Transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-vis diffuse reflection spectroscopy. CdS nanoparticles with the size at range of 5-7 nm were immobilized on the surface of BiPO4 nanorods. The CdS/BiPO4 composite exhibited much higher photodegradation rate of methylene blue under visible light irradation compared to the pure CdS and BiPO4. The optimal mass ratio of CdS to BiPO4 was 0.5, the photodegradation rate of which is 2.1 times higher than that of CdS. The enhancement of photocatalytic activity is attributed to the heterojunction structure of CdS/BiPO4 composite which induced the effective electron-hole separation between CdS and BiPO4. (C) 2015 Elsevier Ltd. All rights reserved.
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