| 초록 |
TiO2 has been studied extensively because of its wide applications in pigments, catalyst support, filter, coating, photoconductors, dielectric material and so on. In recent year, TiO2 is considered the most promising photocatalytic material for the degradation of environment pollutants, such as degradation of hazardous volatile organic and malodorous compound. Because of broad band gap of TiO2 and high chemical stability, it effectively absorbs ultraviolet rays of short wavelength and consistently photolyzes organic as an aqueous solution. The photocatalytic activity of TiO2 is strongly influenced by the microstructure, the presence and concentration of doping elements, the specific surface area, the particle size. In this study, amorphous and crystaline TiO2 coated small stones were prepared and photocatalytic decomposition of methylene blue was carried out. TiO2 coated stones were characterized using XRD, SEM, and UV-Vis spectroscopy. |
