高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (08): 1643.doi: 10.3969/j.issn.0251-0790.2012.08.002

• 研究快报 • 上一篇    下一篇

共缩聚法制备有序介孔氧化硅纳米螺旋纤维

陈曦1, 蔡强1, 孙林豪1, 史卫林2, 齐娟娟1, 王颂1   

  1. 1. 清华大学材料科学与工程系, 北京 100084;
    2. 兰州大学化学化工学院, 兰州 730000
  • 收稿日期:2012-04-13 出版日期:2012-08-10 发布日期:2012-08-10
  • 通讯作者: 蔡强, 男, 博士, 教授, 博士生导师, 主要从事介孔材料的合成及形貌控制研究. E-mail: caiqiang@mail.tsinghua.edu.cn E-mail:caiqiang@mail.tsinghua.edu.cn

Synthesis of Novel Mesoporous Silica Twist Nanofibers Through Co-condensation Method

CHEN Xi1, CAI Qiang1, SUN Lin-Hao1, SHI Wei-Lin2, QI Juan-Juan1, WANG Song1   

  1. 1. Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
    2. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
  • Received:2012-04-13 Online:2012-08-10 Published:2012-08-10

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被引次数

16

摘要：

在传统球状介孔氧化硅合成工作的基础上,以正硅酸乙(TEOS)和γ-巯丙基三甲氧基硅烷(MPTMS)为硅源,在水体系下利用共缩聚法一步合成出具有介孔分子筛结构特征的纳米纤维,并通过扫描电子显微镜(SEM)、小角X射线衍(XRD)、透射电子显微镜(TEM)和氮气吸附-脱附实验对样品进行了表征与分析.

关键词: 介孔氧化硅, 纳米纤维, γ-巯丙基三甲氧基硅烷, 共缩聚

Abstract:

Novel mesoporous silica nanofibers(MSNF) were synthesized through co-condensation method, in which two organoalkoxysilanes, tetraethoxylsilane (TEOS) and 3-mercaptopropyl trimethoxysilane(MPTMS) as silica precursors simultaneously. The microstructure and porous character of the MSNF were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), small-angle X-ray diffraction(XRD) and nitrogen sorption measurements. The results show that the single-axis-twist fibers with diameters of ca. 60-80 nm are obtained. The mesostructure of MSNF corresponds with that of MCM-41 and periodic mesopores fringes are 120 nm. The BET surface area and BJH pore size of the samples are 784 m2/g and 2.36 nm, respectively.

Key words: Mesoporous silica, Fiber, 3-Mercaptopropyl trimethoxysilane, Co-condensation

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