| Popis: |
Conversion of CO2 into long-chain hydrocarbons is a potential applications in clean energy research. Here, we exhibit an efficient, stable and readily synthesized photocatalyst for the photocatalytic reduction of CO2. This is the first time that the proton conductor BZCY 532 as photocatalysts can harvest UV light for multielectron, multiproton reduction of CO2 to C1 (methane) , C2 (ethane), and C3 (propane) hydrocarbons. Under the photothermal coupling (350 °C + UV) condition, the total yield of CH4, C2H6 and C3H8 were 39.13 umol g−1, 8.64 umol g−1 and 3.22 umol g−1 over the course of more than 5 h runs, respectively . The light and temperature attribute influence the selectivity of C1 and C2, C3. In this approach, Ni, Co-doped BZCY532 were also studied and the results show that Ni, Co-doped BZCY532 have higher activity. Ni 0.05 and Co 0.05 obtained the yield of total CH4, C2H6, C3H8, which show about 5.6, 9.6, 3.9 and 6.8, 14.2, 6.7 times than BZCY532, respectively. The results proved that doping play a crucial role in improving photocatalytic activity of BZCY532. The formation of multi-carbon compounds maybe the faster proton transfer, which can harvest more electrons from the proton conductor catalysts and promote C–C coupling to form C2 and C3. These findings elucidate BZCY-based proton conductor catalyst can be good candidate for the nature of photocatalysis, which involves the stage for the chemical bond formation by light excitation. |
