Metallic 1T-N-WS 2 /WO 3 Heterojunctions Featuring Interface-Engineered Cu-S Configuration for Selective Electrochemical CO 2 Reduction Reaction.

Electrocatalytic carbon-dioxide reduction reactions (ECO 2 RR) are one of the most rational techniques to control one's carbon footprint. The desired product formation depends on deliberate reaction kinetics and a choice of electron-proton contribution. Herein the usage of novel CuS active centers decorated over stable 1T metallic N-WS 2 /WO 3 nanohybrids as an efficient selective formate conversion electrocatalyst with regard to ECO 2 RR is reported. The preferred reaction pathway is identified as *OCHO, which is reduced (by gaining H +  + e - ) to HCOO - (HCOO - path) as the primary product. More significantly, at -1.3 V versus RHE yield of FE HCOO - is 55.6% ± 0.5 with a J geo of -125.05 mA cm -2 for CuS@1T-N-WS 2 /WO 3 nanohybrids. In addition, predominant catalytic activity, selectivity, and stability properties are observed; further post-mortem analysis demonstrates the choice of material importance. The present work describes an impressive approach to develop highly active electrocatalysts for selective ECO 2 RR applications.