物理化学学报2001，Vol.17Issue(4)：305-309,5.
表面修饰二氧化钛纳米粒子的结构表征及形成机理
Structural Characterization and Formation Mechanism of Surface Modified Titanium Dioxide Nanoparticles
摘要
Abstract
Surface modified titanium dioxide nanoparticles are synthesized in organic media via sol gel method. The chemical structure of nanoparticles as well as its formation mechanism are discussed on the basis of Fourier transform infrared spectroscopy (FT IR), X ray photoelectron spectroscopy (XPS), transmission electron microscopy(TEM), and X ray diffraction (XRD). The results confirm the existence of organic layer, which was connected with the inorganic nuclei by bidentate coordination.The average diameter of nanoparticles is about 6 8 nm. Although poor crystallinity obtained, the anatase phase of TiO2 could be inferred.The existence of organic ligands would greatly impact the nucleation and surface coordination of nanoparticles. The formation mechanism is postulated as a competitive reaction between polymerization and inhibition processes. Finally, the structural model for organo capped TiO2 nanoparticles is proposed.关键词
二氧化钛/表面修饰/纳米粒子/溶胶凝胶/竞争反应分类
化学化工引用本文复制引用
邹玲,乌学东,陈海刚,王大璞..表面修饰二氧化钛纳米粒子的结构表征及形成机理[J].物理化学学报,2001,17(4):305-309,5.
