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|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
MAT.P-469 |
| Subject |
Phase and structure-dependent effects of TiO2 in application to photocatalytic CO2 conversion reactions |
| Authors |
Dongil Won, HyeJin Kang, Wan-In Lee*
Department of chemistry and chemical engineering, Inha University, Korea
|
| Abstract |
Various kind of TiO2 such as commercial P25 TiO2, [001] phased TiO2, mesoporous spherical TiO2 and their disordered structure named as black TiO2 were synthesized. Pt NPs were then deposited on the prepared TiO2 by a well-known photodeposition method in order to investigate phase and structure-dependent effects of TiO2 in the photocatalytic CO2 conversion reaction. In evolving CH4 from CO2 under Xenon lamp (UV-vis light) irradiation, the photocatalytic activities of Pt/P25 TiO2 are not critically influenced because of their low activated surface structure, whereas using Pt/[001] phased TiO2, the photocatalytic activities are remarkably increased, clearly indicating that the enhancement of the catalytic activities is caused by exposed surface activation effect of [001] TiO2. Also, mesoporous spherical TiO2 showed high photocatalytic activities due to porous structure. Furthermore above TiO2 catalysts can be further increased in efficiency by inducing defect structure on the TiO2 surface. |
| E-mail |
diwon@inha.edu |
|
121st General Meeting of the KCS