Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (4): 453-457.DOI: 10.11944/j.issn.1000-0518.2015.04.140260

• Full Papers • Previous Articles     Next Articles

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

XU Guangniana, *, QIAO Xueliangb, ZHANG Wenhaia, JIN Junchenga, CHANG Wenguia   

  1. aThe Promotion Center for Preparation and Application Technology of Nano-functional Composite Materials, West Anhui University,Liuan,Anhui 237012,China
    b State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology,Wuhan 430074,China
  • Received:2014-07-24 Published:2015-04-10 Online:2015-04-10
  • Contact: Corresponding author:XU Guangnian, associate professor; Tel/Fax:0564-3305690; E-mail:xuguangnian@126.com; Research interests:preparation and properties of nano- and nano-composite materials
  • Supported by:

    Supported by the Natural Science Foundation of Anhui Province(No.1308085ME57), State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology(No.P2014-17), the National Natural Science Fundation of China(No.21271141)

Abstract:

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 ℃.

 

Key words: silver loaded montmorillonite, preparation, temperature, sustained release

CLC Number: