| 초록 |
We demonstrate the effect of CuPt nanoparticles (NPs) on TiO2 on CO2 conversion. The Cu alloying with Pt help improve the resistance of Cu nanoparticles to oxidation. In photocatalytic CO2 conversion, Cu provides adsorption sites, and Pt plays a role of transferring electron to adsorbed CO2. In addition, to improve selectivity, it is important to transfer proton generated from water oxidation to CO2 adsorbed on Cu. The Pt, which forms strong bonding with proton, helps produce CH4 selectively. Finally, the size of CuPt NPs has an effect on the efficiency of CO2 conversion. Small size of CuPt NPs showed the higher photocatalytic activity. |
