Copyrolysed C₃N₄-Ag/ZnO Ternary Heterostructure Systems for Enhanced Adsorption and Photocatalytic Degradation of Tetracycline

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• 作者：Suyana Panneri ; Priyanka Ganguly ; Balagopal N. Nair ; Abdul Azeez Peer Mohamed ; Krishna Gopakumar Warrier and Unnikrishnan Nair. S. Hareesh
• 刊名：European Journal of Inorganic Chemistry
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：2016
• 期：31
• 页码：5068-5076
• 全文大小：2920K
• ISSN：1099-0682c

文摘

The graphitic carbon nitride (g-C₃N₄) Ag/ZnO (CAZ) nanocomposite heterostructure was prepared by the copyrolysis of a precursor mixture containing melamine and nitrates of zinc and silver. This one-pot synthetic approach facilitated the incorporation of fine dispersions of Ag and ZnO on C₃N₄ sheets. The CAZ sample thus prepared exhibited higher adsorption capacity and enhanced sunlight-induced photocatalytic activity towards tetracycline degradation when compared with compositions of g-C₃N₄-Ag, g-C₃N₄-ZnO, ZnO-Ag, and g-C₃N₄. Incorporation of ZnO helped to utilize the UV component of sunlight, whereas ultrafine dispersions of Ag on the surface of the composite created intimate interfaces, facilitating the direct migration of photoinduced electrons to the Ag surface for an efficient separation of photogenerated electron-hole pairs. The present work exemplifies a simple and convenient synthetic protocol for processing the tricomponent heterostructured system of g-C₃N₄-Ag/ZnO for the effective degradation of pollutants such as tetracycline.