A Plasmonic Ag鈥揂gBr/Bi2O2CO3 Composite Photocatalyst with Enhanced Visible-Light Photocatalytic Activity

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• 作者：Lei Jin ; Gangqiang Zhu ; Mirabbos Hojamberdiev ; Xiancong Luo ; Congwei Tan ; Jianhong Peng ; Xiumei Wei ; Jinping Li ; Peng Liu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：September 3, 2014
• 年：2014
• 卷：53
• 期：35
• 页码：13718-13727
• 全文大小：737K
• ISSN：1520-5045

文摘

A plasmonic Ag鈥揂gBr/Bi₂O₂CO₃ composite photocatalyst was prepared by a two-step synthesis method. The as-prepared Ag鈥揂gBr/Bi₂O₂CO₃ was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray, X-ray photoelectron, ultraviolet鈥搗isible diffuse reflection, and photoluminescence spectroscopy. As probe pollutants, rhodamine B (RhB) and methylene blue (MB) were adopted to investigate the photocatalytic activity of the Ag鈥揂gBr/Bi₂O₂CO₃ composite photocatalyst under visible light irradiation. The as-prepared photocatalyst showed an enhanced photocatalytic activity for the degradation of RhB and MB under visible light, which was attributed to the heterostructured Ag鈥揂gBr/Bi₂O₂CO₃ and surface plasmon resonance (SPR) exhibited by Ag nanoparticles. Simultaneously, high stability of the sample was also investigated by five successive photodegradations of RhB under visible light. The relationship between photocatalytic activity and the structure of Ag鈥揂gBr/Bi₂O₂CO₃ is discussed, and possible reaction mechanisms are also proposed.