高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (12): 2367.

• 研究论文 • 上一篇    下一篇

原位还原法制备SBA-15介孔分子筛负载纳米银颗粒

田冬1,2, 雍国平2, 刘少民2   

  1. 1. 淮南师范学院化学与化工系, 淮南 232001;
    2. 中国科学技术大学化学系, 合肥 230026
  • 收稿日期:2008-12-19 出版日期:2009-12-10 发布日期:2009-12-10
  • 通讯作者: 田冬, 男, 讲师, 主要从事介孔材料研究. E-mail: tiandong@mail.ustc.edu.cn
  • 基金资助:

    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.

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.

摘要:

利用一种温和的还原剂六亚甲基四胺(HMT)通过一步合成的方法制备了介孔Ag/SBA-15分子筛, 采用粉末X射线衍射(XRD)、透射电镜(TEM)和氮气吸附/脱附等手段对样品进行了表征. 样品的比表面积为525 m2/g, 平均孔径为5.4 nm. 用XPS、广角XRD和高分辨TEM等手段证实样品中的银为金属态的纳米颗粒. 研究结果表明, 以六亚甲基四胺为还原剂通过原位还原的方法能使银纳米颗粒较好地分散到介孔材料的孔道中.

关键词: Ag/SBA-15; 六亚甲基四胺; 银纳米颗粒

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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