高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (12): 2694.doi: 10.7503/cjcu20140683

• 物理化学 • 上一篇    下一篇

CdS/SiO2纳米复合材料的合成及光学性能

徐林煦, 崔放(), 汪浩, 姚同杰, 崔铁钰   

  1. 哈尔滨工业大学基础与交叉科学研究院, 哈尔滨 150080
  • 收稿日期:2014-07-21 出版日期:2014-12-10 发布日期:2014-11-29
  • 作者简介:联系人简介: 崔 放, 女, 博士, 讲师, 主要从事无机有机复合功能材料研究. E-mail:cuifang@hit.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21104011, 51273051, 21174033)资助

Synthesis and Optic Properties of Sulfide/Silica Nanocomposite Material

XU Linxu, CUI Fang*(), WANG Hao, YAO Tongjie, CUI Tieyu   

  1. Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin 150080, China
  • Received:2014-07-21 Online:2014-12-10 Published:2014-11-29
  • Contact: CUI Fang E-mail:cuifang@hit.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21104011, 51273051, 21174033)

摘要:

以合成的丙氨酸镉为纳米粒子的前驱体, 在不加酸或碱性催化剂的条件下, 利用丙氨酸镉分子中的胺基催化硅氧烷水解缩合生成二氧化硅, 同时将丙氨酸镉均匀地引入到二氧化硅的内部, 通过硫化原位生成硫化镉纳米颗粒, 制得硫化镉/二氧化硅(CdS/SiO2)纳米复合材料. 用傅里叶变换红外光谱、 核磁共振氢谱、 紫外-可见光谱、 荧光显微镜和透射电子显微镜等方法对CdS/SiO2复合材料进行表征, 结果表明, 硫化镉粒子均匀分布在二氧化硅内部, 使其具有良好的荧光特性.

关键词: 氨基酸, 硫化镉, 二氧化硅, 纳米复合材料, 荧光性能

Abstract:

In conventional methods to preparation silica, it is inevitably to use the acid or basic catalysts, which have a destructive effect on molecules or particles that are sensitive to pH. These methods have significant limitations in the preparation of the silica composites materials. Therefore, it is still a great challenge to find a mild way to synthesize silica. In this paper, we used synthesized of alanine cadmium as a precursor of the nanoparcitles, taking advantage of the amine group in the alanine cadmium molecule as catalyst to catalyze siloxane hydrolysis and condensation without added acid or basic catalysts, meanwhile, the alanine cadmium was introduced to the silica. Then the CdS nanoparcitles were prepared by in situ the way of vulcanization. The characterization of the material through Fourier transform infrared spectroscopy, proton nuclear magnetic resonance, ultraviolet-visible spectrum, fluorescence microscopy and transmission electron microscopy shows that the nanocomposites material with the CdS particle uniformly distribution in silica are synthesized. The material has excellent fluorescence properties.

Key words: Amino acid, CdS, Silica, Nanocomposite material, Fluorescence property

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