Ag@AgCl embedded on cellulose film: a stable,highly efficient and easily recyclable photocatalyst |
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| Authors: | Xia Peng Shaojun Wang Xiaomin Zhang You Shu Shengpei Su Jin Zhu |
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| Affiliation: | 1.Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Hunan Normal University),Ministry of Education,Changsha,China;2.The Key Lab for Fine Processing of Resources and Advanced Materials of Hunan Province,Hunan Normal University,Changsha,China;3.National and Local Joint Engineering Lab for New Petro-chemical Materials and Fine Utilization of Resources,Hunan Normal University,Changsha,China;4.Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo,China;5.Hunan Engineering laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material,Huaihua University,Huaihua,China |
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| Abstract: | In this work, cellulose–Ag@AgCl composite films have been fabricated directly through a one-step coagulation of a cellulose/1-butyl-3-methylimidazolium chloride (BmimCl) solution with AgNO3 and PVP. The AgCl was formed upon the addition of AgNO3 to a cellulose/BmimCl solution, and underwent further reaction with excess Cl?, leading to the complete dissolution of AgCl. The AgCl crystals were regenerated on the cellulose matrix during the coagulation process. The AgCl was partial decomposed to Ag0 and formed Ag@AgCl under visible light irradiation. The morphology of Ag@AgCl in the cellulose matrix was controlled by varying the concentration of PVP. The addition of PVP enabled the formation of stable cellulose films embedded with Ag@AgCl. The composite film demonstrated efficient photodegradation of methyl orange, which was retained upon recycling. This work thus provides a simple pathway for the preparation of Ag@AgCl embedded on a polymer support via one-step coagulation. |
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