Abstract
Platinum doped Tungsten Oxide (WO3/Pt) has been successfully coated on the glass substrate using spray deposition method. Doping of Pt on WO3 was carried out by phodeposition method. The amount of Pt was varied by weight fraction of 0%, 1%, 2%, 4%. These films were characterized using X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). It is found that the crystal structure of WO3 was not change with the Pt addition. However, the dominant plane orientation and the size of crystal were influenced by Pt addition. The crystal size increases with increasing the amount of Pt. After Pt addition, the film morphology showed the presence of pillar structure. The photocatalytic activity test resulted that WO3/Pt photocatalyst has the ability for degradation of methylene blue (MB) under sunlight irradion. Significantly, the maximum efficiency of photodegradation was observed at 4% Pt doping amount in the WO3 sample.
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