| 초록 |
In this study, TiO2 and x mol. % Fe-doped TiO2 were prepared using a conventional solvothermal method, and the prepared powders were fabricated as TiO2/Fe-TiO2 double-layered films for applications to the photoreduction of CO2. The amount of CH4 generated from the photoreduction of CO2 with H2O increased remarkably over the TiO2/Fe-TiO2 films compared to the TiO2/TiO2 film. In particular, the amount of CH4 gas evolved over the TiO2/1.0 mol. % Fe-TiO2 film was 7 times higher than that produced over the TiO2/TiO2 film. A proposed model suggested that the photoactivity over the TiO2/Fe-TiO2 films can be enhanced by the effective charge separation and inhibited recombination of photogenerated electron–hole (e−/h+) pairs on interfacial transfer between TiO2 and Fe-TiO2. |
