Preparation and Characterization of Nano-scale Anatase Titania by Electrolytic Precipitate Method
锐钛矿型TiO2纳米粉体的电化学沉淀法制备及其表征

The electrolyser was divided into the cathode chamber and the anode chamber by the septum of the anion-exchange membrane. When hydrogen ions in the cathode chamber were consumed under the electrolyzing process with a constant current density on the cathode, titanyl ions were promoted to react to hydroxide ions produced by electrolyzing to form uniform deposition of hydrous titania. Titania with different crystal phases was produced under different temperatures. TEM and XRD analyses show that the nanoparticles are spherical and with the average size from 30 to 50nm at 773K, and mainly anatase phase at 873K containing 3.85% rutile. The mechanism of forming ultrafine powder was elementarily investigated.