Synthesis and Characterization of Porous and Nonporous Monodisperse Colloidal TiO2 Particles.
Synthesis and Characterization of Porous and Nonporous Monodisperse Colloidal TiO2 Particles.
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DOI：
10.1002/chin.200413021
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发表时间：
2004-03
期刊：
影响因子：
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通讯作者：
S. Eiden-Assmann;J. Widoniak;G. Maret
中科院分区：
文献类型：
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作者：
S. Eiden-Assmann;J. Widoniak;G. Maret
单分散球形二氧化钛颗粒的大小可变的生产在溶胶-凝胶合成从钛（环氧乙烷）4在乙醇中添加盐或聚合物溶液。研究了不同的盐离子或聚合物分子对最终粒子的尺寸和尺寸分布的影响。采用电子显微镜、热重分析、1H-MAS NMR、X射线吸收光谱和电泳等手段对纳米二氧化钛进行了表征。氮吸收测量表明，除了聚合物产生中空和多孔二氧化钛胶体。
Monodisperse spherical titania particles of variable sizes are produced in a sol−gel synthesis from Ti(EtO)4 in ethanol with addition of a salt or a polymer solution. The influence of different salt ions or polymer molecules on the size and the size distribution of the final particles was investigated. The amorphous hydrous titania particles were characterized by electron microscopy, thermogravimetry, 1H-MAS NMR, X-ray absorption spectroscopy, and electrophoresis. Nitrogen absorption measurements revealed that the addition of polymers yields hollow and porous titania colloids.