| 초록 |
Controlling atmospheric CO2 concentrations is to use solar energy to convert CO2 into useful products, especially CH4, by use of specifically designed photocatalytic materials. However, poor photoconversion efficiencies and product selectivity are the limiting factor of their applicability. Herein, we developed a mesoporous noble metal free p-type Cu2ZnSnS4 (CZTS)/n-type TiO2 heterojunction photocatalyst for broad spectrum light absorption, enhanced charge separation and transfer that, in turn, enhances photocatalytic CO2 conversion. A maximum methane production rate of 118.75 ppm g−1 h−1 is observed, which represents CH4 evolution rate approximately 12 times greater than that of pure TiO2. The key factors contributing to the enhanced photocatalytic performance seen in the mesoporous CZTS–TiO2 samples include improved light absorption, high surface area, and effective charge separation. This paper is reviewed RSC Advances, 2016, 6, 38964 paper |
