Abstract
Nano-sized titanium oxide powders were synthesized by a polymer matrix technique using pulp and Titanium tetraisopropoxide (TTIP) as starting materials. The synthesized powders were characterized by XRD and FE-SEM. The particle size of the powders was controlled by preparation conditions, such as heat treatment temperature and time. After investigating various drying and heat treatment conditions, 50-100 nm sized homogeneous titanium oxide particles were obtained by treating at 600 o C for 1 h. The crystallization and rapid growth of particles was accelerated by increasing heat treatment temperature and time. Anatase phase generated below 600 o C transformed to the rutile phase with increasing heat treatment temperature. Moreover, above 800 o C, heat treatment time had a very large influence on particle growth, and changing the heating condition also had a large influence on crystal growth.
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