高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (11): 1929.

• 论文 •    下一篇

吸附相反应技术制备纳米TiO2/SiO2复合材料

王挺1, 蒋新1, 王幼文2   

  1. 1. 浙江大学材料与化工学院;
    2. 浙江大学分析测试中心, 杭州 310027
  • 收稿日期:2003-01-27 出版日期:2003-11-24 发布日期:2003-11-24
  • 通讯作者: 蒋新(1968年出生),男,副教授,从事纳米粒子的制备和应用研究.E-mail:jiangx@zjuem.zju.edu.cn E-mail:jiangx@zjuem.zju.edu.cn
  • 基金资助:

    中国石油化工股份有限公司基础研究基金(批准号:X500031);教育部回国人员科研启动基金(2002年)资助

Preparation of Nanometer TiO2/SiO2Composite Materials by Adsorption Phase Nanoreactor Technique

WANG Ting1, JIANG Xin1, WANG You-Wen2   

  1. 1. College of Material and Chemical Engineering;
    2. Center of Analysis & Measurement, Zhejiang University, Hangzhou 310027, China
  • Received:2003-01-27 Online:2003-11-24 Published:2003-11-24

摘要: 以SiO2表面形成的吸附层为反应器,在载体表面制备了纳米TiO2粒子.溶剂置换实验直接给出了吸附层的存在以及吸附层作为纳米反应器的实验证据,TEM,XRD和电子能谱分析表明,载体表面形成一层比较均匀的纳米粒子.初步探讨了温度和反应物浓度对产物分布的影响,分析了各种现象产生的可能成因.

关键词: 吸附层, 纳米反应器, 纳米TiO2/SiO2复合材料

Abstract: TiO2nanoparticles were prepared in adsorption phase nanoreactor formed by the adsorption layer on the silica surface.Solvent replacement experiment provided a direct evidence that there was water-rich adsorption layer and the reaction took place in the layer.TEM, XRDand electronic energy spectrum indicated that uniform TiO2particles laid over the surface of SiO2.The effects of reaction temperature and reactant concentration were investigated and the potential mechanism was discussed in terms of adsorption equilibriuMAnd reaction kinetics.

Key words: Adsorption layer, Nanoreactor, Nanometer TiO2/SiO2composite material

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