二氧化钛的表面化学改性

Surface-chemical modification of titanium dioxide

二氧化钛具有表面羟基、润湿性、表面酸碱性、表面电性、光化学活性等表面物理化学性质。介绍了水溶液沉积干燥法、表面活性剂法、偶联剂法、聚合物包膜法、表面反应法和化学沉析法等表面化学改性方法。并简述了二氧化钛表面改性技术的发展趋向。

Titanium dioxide has unique characteristics, such as the surface hydroxy groups involved, wetting properties, surface acidity or basicity, surface electrical properties and photochemical activity. A number of modification methods including spray drying method, surface active agent method, coupling agen tmethod, polymer film-forming method, surface reaction method, and chemical vapor deposition method have been reviewed and the prospects of the surface modification technology are probed.