Electrochemical reduction of CO2 to ethylene on Cu/Cu x O-GO composites in aqueous solution

Nusrat Rashid; Mohsin Ahmad Bhat; U K Goutam; Pravin Popinand Ingole

doi:10.1039/d0ra02754e

Electrochemical reduction of CO₂ to ethylene on Cu/Cu _x O-GO composites in aqueous solution

RSC Adv. 2020 May 6;10(30):17572-17581. doi: 10.1039/d0ra02754e. eCollection 2020 May 5.

Authors

Nusrat Rashid¹, Mohsin Ahmad Bhat², U K Goutam³, Pravin Popinand Ingole¹

Affiliations

¹ Indian Institute of Technology Delhi 110016 India ppingole@chemistry.iitd.ac.in.
² University of Kashmir Srinagar 190006 India.
³ Raja Ramanna Centre for Advanced Technology Indore 452013 India.

Abstract

Here, we present fabrication of Graphene oxide (GO) supported Cu/Cu _x O nano-electrodeposits which can efficiently and selectively electroreduce CO₂ into ethylene with a faradaic efficiency (F.E) of 34% and a conversion rate of 194 mmol g^-1 h^-1 at -0.985 V vs. RHE. The effect of catalyst morphology, working electrode fabricational techniques, the extent of metal-GO interaction and the oxide content in Cu/Cu _x O, was studied in detail so as to develop a protocol for the fabrication of an active, stable and selective catalyst for efficient electro-production of ethylene from CO₂. Moreover, a detailed comparative study about the effect of the GO support, and the nature of the cathodic collection substrate used for the electro-deposition is presented.