Fabrication of Three-Dimensional Titania Building Blocks on Glass Substrate from Mono-Dispersed Titanium Glycolate Spheres and Their Photocatalystic Properties

摘要

Mono-dispersed titanium glycolate sphere powders were successfully synthesized through a homogeneous nucleation and growth process. The obtained titanium glycolate sphere powders showed a fine size distribution and shape. On calcination, the titanium glycolate spheres lost chemically bound organic compounds, and changed to anatase (500 degrees C) and rutile (900 degrees C) titania spheres. Titania films fabricated with the synthesized titanium glycolate spheres exhibited marked photocatalytic activity and effective reusability. The fabricated films were characterized by X-ray diffraction, scanning electron microscopy, and thermogravimetric and differential thermal analyses.