Synthesis and characterization of zinc titanate nano-crystal powders by sol-gel technique

A sol-gel technique including the Pechim process has been employed for the preparation of nano-sized zinc titanate (ZnTiO3) powders. The yielding powders were heated at temperature from 500degreesC to 1000degreesC for various times. The ZnTiO3 phase was formed at the beginning of 500degreesC. The shape of crystalline will be changed from granular to fiber as the calcination temperature increasing from 800degreesC to 1000degreesC. The activation energy of crystallization of ZnTiO3 is 172.74 kJ/moI calculated from Kissinger's equation. The activation energy of grain growth is 20.83 kJ/moI experimented by Arrhenius equation. (C) 2002 Elsevier Science B.V. All rights reserved.