| 초록 |
Development of photocatalyst for reducing carbon dioxide to useful fuel with high efficiency and stability is great issue. In natural photosynthesis, leaf shows significant efficiency and stability by combination of three dimensional structure and Z-scheme catalytic system. So herein, we fabricated bismuth vanadate-carbon coated three dimensional copper oxide nanowire mesh structure for carbon dioxide reduction in artificial photosynthesis. Three dimensional structure of copper oxide nanowire mesh enhanced adsorption, mass transportation. And Z-schematic electron flow between bismuth vanadate and copper oxide enhanced charge separation and transport with high redox potential. And also mediation by ultrathin carbon layer enhances charge transport between two catalysts and enhances stability by protecting copper oxide. Substantially, three dimensional Z-scheme catalyst exhibited significant improvement in CO formation rate and stability than bare catalyst in visible light irradiation. |
