Boosting electron transport over controllable N ligand doping for electrochemical conversion of CO2 to syngas

The Electrocatalytic CO2 reduction reaction provides a promising strategy for the preparation of syngas, which not only can reduce CO2 emissions to regulate global warming and solve the energy crisis, but also provide raw materials for the chemical industry to ease the energy crisis. However, it is extremely challenging to improve the catalytic activity of the electrocatalyst and regulate the ratio of CO and H-2 in syngas. To solve the problem, nanomaterial Co-N-C-Ph derived from 1,10-phenanthroline doped bimetallic zeolitic imidazolate frameworks (B-ZIFs) was designed as electrocatalysts to produce syngas in the work. The electrocatalysts display 10.5 mA cm(-2) of geometrical current density at -1.1 V (vs. RHE), with an approximately 3:2 ratios of CO/H-2. The current density of generated CO current density and FE CO, which could remain nearly unchanged after electrolyzing 16 h in CO2RR, revealing robust long-time stability. The results indicated that the catalysts is suitably developed as an efficient electrocatalysts for the preparation of syngas. (C) 2021ElsevierLtd. Allrightsreserved.