Journal
MATERIALS & DESIGN
Volume 119, Issue -, Pages 113-123Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2017.01.070
Keywords
H2O2; Bi2MoO6; Ag3PO4; Visible-light; Photocatalytic oxidation
Categories
Funding
- National Natural Science Foundation of China [21306150, 21476183, 21676213, 51372201]
- China Postdoctoral Science Foundation [2016 M600809]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20136101110009]
- Scientific Research Foundation of graduate students of Northwest University [YZZ15003]
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Ag3PO4-Bi2MoO6 heterojunctions with visible-light photocatalytic activity were successfully fabricated via a deposition-precipitation method. The investigation shows that Ag3PO4-Bi2MoO6 composites exhibit enhanced visible light harvesting ability and better degradation efficiency for RhB compared with Bi2MoO6 and Ag3PO4 under visible light irradiation (lambda > 420 nm). What's more, we found that the activity and the stability of Ag3PO4Bi2MoO6 heterojunction could be further improved by adding of H2O2 in the RhB reaction solution. The enhanced photocatalytic performance and structure stability are primarily attributed to the efficient charge carrier separation of the heterojunction formed by Ag3PO4 and Bi2MoO6, and the electron capturing property of H2O2 on the surface of Ag3PO4-Bi2MoO6 composites, leading to a highly efficient removal of RhB using the Ag3PO4Bi2MoO6-H2O2 system. In addition, the active species trapping experiments indicate that h(+) and center dot O-2(-) play important roles during the photocatalytic degradation process. This work suggests that the H2O2 assisted Ag3PO4Bi2MoO6 heterojunction system could be a potential promising photocatalyst for environmental remediation. (C) 2017 Elsevier Ltd. All rights reserved.
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