# Siam Physics Congress 2015

20-22 May 2015
Asia/Bangkok timezone
The Centennial Celebration of General Relativity Theory and 80 Years of Thai Physics Graduate

## Photocatalytic Properties of Hydrogenated Titanium Dioxide Thin Films Prepared by Sparking Method

21 May 2015, 13:00
3h 30m
Board: MNA-04
Poster presentation Material Physics, Nanoscale Physics and Nanotechnology

### Speaker

Ms Porntipa Pooseekheaw (Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)

### Description

Titanium dioxide (TiO${}_2$) is a widely used photocatalyst in water splitting process for hydrogen production. In this study, hydrogenation of the titanium dioxide thin films was investigated in order to examine the photocatalytic properties and to improve the performance for photoactivity. Titanium dioxide thin films were prepared by sparking method, then annealed at 500 ${}^{\circ}$C in hydrogen atmosphere to get hydrogenated titanium dioxide thin films (H:TiO${}_2$). The result of scanning electron microscopy and atomic force microscopy showed that the thickness of films was 2 µm. The film was porous with high specific surface area which promotes good photocatalytic activity. UV-Vis-NIR spectrometer measurement indicated that the sunlight absorbance of H:TiO${}_2$ was more than the absorbance of TiO${}_2$. For these results suggest that H:TiO${}_2$ has better photocatalytic properties than the TiO${}_2$.

### Primary author

Ms Porntipa Pooseekheaw (Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)

### Co-author

Prof. Pisith Singjai (Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)

### Presentation Materials

 Poster
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