Electrochemical conversion of CO_2 into tunable syngas on a B, P, N tri-doped carbon

摘要

The fabrication of syngas by CO2 reduction reaction (CO2RR) can avoid the disadvantages of its traditional industrial productions that exacerbate energy crisis and environmental problems. Herein, a series of B, P, N tri-doped carbon (BPNC) catalysts are developed for CO2RR. The results show that, the products of CO2 electroreduction on as-prepared BPNC are CO and H-2 with no other products. And on the optimal BPNC (1000 degrees C, n(C48H40BP): n(melamine) = 1:200), the faradaic efficiency of CO can reach 81.8 %, with the ratio of H-2/CO from 0.2 to 6.8 easily regulated by controlling the applied potential during CO2RR process. This study would provide a good option for production of tunable syngas feedstock by CO2RR process using carbonbased catalysts for numerous downstream processes. (C) 2021 Elsevier Ltd. All rights reserved.