One-pot triethanolamine-assisted hydrothermal synthesis of Ag/ZnO heterostructure microspheres with enhanced photocatalytic activity

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• 作者：Bo Chai ; Xing Wang ; Siqing Cheng ; Huan Zhou ; Fen Zhang
• 关键词：Ag/ZnO heterostructure microsphere ; Hydrothermal synthesis ; Photocatalytic activity ; Triethanolamine
• 刊名：Ceramics International
• 出版年：January, 2014
• 年：2014
• 卷：40
• 期：1_part_PA
• 页码：429-435
• 全文大小：1548 K

文摘

The Ag/ZnO heterostructure microspheres were prepared via a simple one-pot triethanolamine (TEA)-assisted hydrothermal route and characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), X-ray Photoelectron Spectroscopy (XPS), UV-vis Diffuse Reflectance Absorption Spectra (DRS) and Photoluminescence Spectra (PL), demonstrating that Ag nanoparticles were attached on the surface of ZnO microspheres. The photocatalytic degradation of Rhodamine B (RhB) by the as-synthesized Ag/ZnO microspheres was investigated and optimized, indicating the best photocatalytic performance of Ag/ZnO of 1:150 (mol/mol). This may be attributed to the charge separation of photogenerated electrons and holes by Ag/ZnO heterostructure microspheres, which is interpreted by the proposed mechanism for Ag/ZnO heterostructure microspheres as catalyst.