| 초록 |
A compelling strategy to combat arising atmospheric CO2 levels is by photoreduction of CO2 with sunlight to produce hydrocarbon fuels. However, practical application of such a photocatalytic system requires significant efforts for improved performance and product selectivity. Our research investigated the performance of a newly developed reduced TiO2, prepared by a reduction process using Mg in 5% H2/Ar, for photoconversion of CO2 and water vapor to hydrocarbons, primarily CH4. Under simulated solar light irradiation, this Pt-sensitized reduced anatase TiO2 exhibits a stable performance due to enhanced light absorption, suitable band edge alignment, and efficient photogenerated charge separation which resulted to a threefold increase in the rate of CH4 production (1.13 µmol g−1h−1) as compared to anatase TiO2 nanoparticle (0.38 µmol g−1h−1). Our results suggest that this new development can serve as an efficient photocatalyst for solar light CO2 photoreduction. |
