Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (12): 2367.

• Articles • Previous Articles     Next Articles

In situ Formation of Silver Nanoparticles Hosted in Mesoporous SBA-15

TIAN Dong1,2*, YONG Guo-Ping2, LIU Shao-Min2   

  1. 1. Department of Chemistry and Chemical Engineering, Huainan Normal College, Huainan 232001, China;
    2. Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
  • Received:2008-12-19 Online:2009-12-10 Published:2009-12-10
  • Contact: TIAN Dong. E-mail: tiandong@mail.ustc.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20872135)和淮南师范学院自然科学基金(批准号: 2007lkp09)资助.

Abstract:

Mesoporous silicas SBA-15 with Ag nanoparticles in the channel was synthesized by one-step method with a mild reducing reagent(hexamethylenetetramine). Samples characterzation were performed by the XRD, TEM, adsorption/desorption of nitrogen. The surface areas of Ag/SBA-15 is 525 m2/g and the average pore diameter is 5.4 nm. Presence of nanoparticles of silver in mesoporous SBA-15 were confirmed by X-ray photoelectron spectroscopy(XPS), high angle X-ray diffraction(XRD) and transmission electron microscopy(TEM) confirmed the diameter of the metal nanoparticles. The content of the silver in the Ag/SBA-15 was detected by ICP-AES. The silver nanoparticles were dispersed uniformly by the in situ auto-reduction reaction with hexamethylenetetramine(HMT) as reducing reagent, and diameter of nanoparticles is found to be about 8.0 nm which is coincident with the channel diameter of SBA-15.

Key words: Ag/SBA-15; Hexamethylenetetramin; Ag nanoparticle

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