Selective Electrochemical Reduction of CO2 to Ethylene on Nanopores-Modified Copper Electrodes in Aqueous Solution

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yuecheng Peng
  • Tian Wu
  • Libo Sun
  • Jean M. V. Nsanzimana
  • Adrian C. Fisher

Detail(s)

Original languageEnglish
Pages (from-to)32782-32789
Journal / PublicationACS Applied Materials and Interfaces
Volume9
Issue number38
Publication statusPublished - 27 Sept 2017
Externally publishedYes

Abstract

Electrochemical reduction of carbon dioxide was carried out on copper foil electrodes modified with nanopores on the surface. Such nanopores modified structure was obtained through an alloying-dealloying process. Scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy confirmed the formation of alloy layer and the final nanoporous morphology of such copper electrodes. When used in electrolysis process, the as-prepared nanopores-modified electrodes can suppress the Faradaic efficiency toward methane to less than 1%, while keeping that of ethylene in a high level of 35% in aqueous 0.1 M KHCO3 solution under -1.3 V (vs reversible hydrogen electrode), thus revealing a remarkable selectivity toward ethylene production. The high yield of ethylene can be ascribed to the exposed specific crystalline orientations. © 2017 American Chemical Society.

Research Area(s)

  • CO2 electrocatalytic reduction, copper foil, crystalline orientation, dealloy, nanoporous structure, selectivity

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

Selective Electrochemical Reduction of CO2 to Ethylene on Nanopores-Modified Copper Electrodes in Aqueous Solution. / Peng, Yuecheng; Wu, Tian; Sun, Libo et al.
In: ACS Applied Materials and Interfaces, Vol. 9, No. 38, 27.09.2017, p. 32782-32789.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review