Abstract
In recent years tungsten oxide (WO3) has been attracting attention as a visible light response type photocatalyst. The particle size of WO3 particles is preferably less than 100 nm in order to improve the catalytic performance and ensure transparency of base material after coating. WO3 nanoparticles have been fabricated by thermal decomposition at 793 K of the tungsten complex powder which was prepared of Ammonium paratungstate, citric acid and ammonia solution. The effect of the chemical composition of the tungsten complexes on particle size was examined.
