| 초록 |
In this study, layered V2O5@layered-ZnV2O6 nanostructures were synthesized using a hydrothermal method followed with heat treatment. The heat treatment temperature has been varied to optimize the composition and CO2 reduction efficient. Characterization results demonstrate that an optimized CO generation rate of 6.15 μmolg−1h−1 with an approximate stoichiometric O2 evolution can be achieved from V2O5@ ZnV2O6 under simulated solar light irradiation, as well as relatively good selectivity and stability. The performance of optimized V2O5@ZnV2O6 for CO production was 3.53 folds higher than using pure ZnV2O6 sample. This reveals that ZnV2O6 nanosheets not only allow the transfer of electrons towards CO2 but also provide short pathways for electron transfer, which leads to the enhanced photoactivity. In addition, V2O5 presents in the sample further contribute to enhance performance of ZnV2O6 hierarchical nanosheets due to enabling efficient charge carrier separation. |
