| 초록 |
Electrocatalytic CO2 reduction becomes more attractive for reducing CO2 emission and converting it into useful chemicals, but it suffers from high overpotential, low efficiency or poor product selectivity. In this study, N,S dual-doped carbon nanoweb (NSCNW) catalysts is proposed as an efficient nonmetallic electrocatalyst for CO2 reduction. It preferentially and rapidly converted CO2 to CO with a high CO Faradaic efficiency of 93.4 % and exhibited an excellent durability in performance attenuation toward CO formation. Its superior performance can be attributed to the structure advantages and synergistic effect between N and S atoms, exhibiting that the 3D nanoweb structures with the highest ratio of thiophene S and oxidized S synergistically lead to the significant enhancement in converting CO2 to CO. Our results should be of great significance and interest to give a new approach in the research field of CO2 electroreduction which requires a guideline for the rational design and accurate modulation of carbon-based electrocatalysts. |
