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Materials 2016, 9(11), 882; doi:10.3390/ma9110882

Enhanced Visible Light Photocatalytic Degradation of Organic Pollutants over Flower-Like Bi2O2CO3 Dotted with Ag@AgBr

1
School of Chemical engineering and Technology, Tianjin University, Tianjin 300072, China
2
Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, China
3
Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada
*
Authors to whom correspondence should be addressed.
Academic Editor: Greta R. Patzke
Received: 21 August 2016 / Revised: 21 October 2016 / Accepted: 27 October 2016 / Published: 31 October 2016
(This article belongs to the Section Energy Materials)
View Full-Text   |   Download PDF [6122 KB, uploaded 31 October 2016]   |  

Abstract

A facile and feasible oil-in-water self-assembly approach was developed to synthesize flower-like Ag@AgBr/Bi2O2CO3 micro-composites. The photocatalytic activities of the samples were evaluated through methylene blue degradation under visible light irradiation. Compared to Bi2O2CO3, flower-like Ag@AgBr/Bi2O2CO3 micro-composites show enhanced photocatalytic activities. In addition, results indicate that both the physicochemical properties and associated photocatalytic activities of Ag@AgBr/Bi2O2CO3 composites are shown to be dependent on the loading quantity of Ag@AgBr. The highest photocatalytic performance was achieved at 7 wt % Ag@AgBr, degrading 95.18% methylene blue (MB) after 20 min of irradiation, which is over 1.52 and 3.56 times more efficient than that of pure Ag@AgBr and pure Bi2O2CO3, respectively. Bisphenol A (BPA) was also degraded to further demonstrate the degradation ability of Ag@AgBr/Bi2O2CO3. A photocatalytic mechanism for the degradation of organic compounds over Ag@AgBr/Bi2O2CO3 was proposed. Results from this study illustrate an entirely new approach to fabricate semiconductor composites containing Ag@AgX/bismuth (X = a halogen). View Full-Text
Keywords: semiconductors; chemical synthesis; X-ray diffraction; optical properties; catalytic properties semiconductors; chemical synthesis; X-ray diffraction; optical properties; catalytic properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lin, S.; Wang, M.; Liu, L.; Liang, Y.; Cui, W.; Zhang, Z.; Yun, N. Enhanced Visible Light Photocatalytic Degradation of Organic Pollutants over Flower-Like Bi2O2CO3 Dotted with Ag@AgBr. Materials 2016, 9, 882.

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