| 초록 |
To achieve low-cost and high stability, we report a noble metal-free, efficient and stable hybrid Cu2ZnSnS4(CZTS)-ZnO photocatalyst synthesized in a simple two-step process. Photocatalytic performance is evaluated by measuring the conversion yield of CO2 to hydrocarbon fuel under simulated sunlight. Our optimum CZTS-ZnO photocatalyst exhibits a CH4 yield of 138.90 ppm g−1 h−1, a factor of ≈31 times greater than the un-sensitized ZnO nanorods, and ≈22 times greater than the CZTS nanoparticles with excellent stability showing similar CH4 production up to five test-cycles. The enhanced performance of the hybrid, noble metal-free photocatalyst can be attributed to improved light absorption and efficient separation of the photogenerated charge due to the Z-scheme heterojunction interface. This poster is review of "Cu2ZnSnS4 (CZTS)-ZnO: A noble metal-free hybrid Z-scheme photocatalyst for enhanced solar-spectrum photocatalytic conversion of CO2 to CH4"(2017, Journal of CO2 Utilization). |
