Effects of Silver on the Photocatalytic Degradation of Gaseous Isopropanol
2009
Ma, Chih-Ming | Ku, Young | Guo, Yulin | Chou, Yiang-Chen | Jeng, Fu-Tien
The decomposition of gaseous isopropanol (IPA) by UV/TiO₂ process in an annular photoreactor was studied under various conditions such as UV light intensity and inlet IPA concentrations. In order to impede the rapid electron/hole recombination during photoreaction, the Ag deposited on TiO₂ photocatalysts were prepared by a photodeposition process. This study was aimed at applying the photocatalytic oxidation using the Ag/TiO₂ and pure TiO₂ catalysts to remove gaseous IPA. The PL analyses indicated that the silver on the surface of TiO₂ could inhibit the electron/holes recombination. For experiments conducted with gaseous IPA under UV light irradiation, the photocatalytic activity of Ag deposited TiO₂ surface was significantly superior to that of TiO₂ only ones.
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