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Citation: XU Guangnian, QIAO Xueliang, ZHANG Wenhai, JIN Juncheng, CHANG Wengui. Influence of Reaction Temperature on the Amount of Silver Loaded on Montmorillonite and Its Sustained Release Performance[J]. Chinese Journal of Applied Chemistry, ;2015, 32(4): 453-457. doi: 10.11944/j.issn.1000-0518.2015.04.140260 shu

Influence of Reaction Temperature on the Amount of Silver Loaded on Montmorillonite and Its Sustained Release Performance

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a The Promotion Center for Preparation and Application Technology of Nano-functional Composite Materials, West Anhui University, Liuan, Anhui 237012, China;
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b State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China

Corresponding author: XU Guangnian,
Received Date: 24 July 2014
Available Online: 4 January 2015
Fund Project: 安徽省自然科学基金(1308085ME57) (1308085ME57)华中科技大学材料成形与模具技术国家重点实验室开放基金(P2014-17) (P2014-17)国家自然科学基金(21271141)资助项目 (21271141)

Silver loaded montmorillonite(Ag-MMT) was prepared by ion-exchange and triethanolamine reduction two-step approach using[Ag(NH₃)₂OH] as the precursor for silver oxide and ammonia. The silver content in Ag-MMT was determined by the Volhard method. The effects of reaction temperature on silver loading,its release properties,and the structures of Na-MMT and Ag-MMT were characterized by FI-IR and XRD,respectively. The results show that the amount of silver loaded on the montmorillonite is maximum,the utilization rate of silver reaches up to 86.9% and the layered structure of MMT is remained under the optimized conditions:the mass ratio of montmorillonite to Ag⁺ is 20:1,the ion exchange time is 1 h,and the reaction temperature is 50℃,then triethanolamine and polyvinylpyrrolidone are added and react for 2 h at temperature of 50℃.
- silver loaded montmorillonite,
- preparation,
- temperature,
- sustained release
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