Development of electrocatalyst to reduce carbon dioxide

Research output: Contribution to journalArticle

Abstract

The carbon-doped copper oxide is devised as an electrocatalyst to reduce carbon dioxide under ambient pressure and temperature. The electrode was immersed into a KHCO3 aqueous solution with CO2 bubbling. The electric potential was maintained at -1.64 V vs SHE. The electrode prepared at 900 oC gives the maximum production rate of ethylene (25 %), ethanol (6.9 %) and 1-propanol (3.6 %). The production rate of methane, from which is harmful to separate ethylene, was suppressed to one fifteenth of that of ethylene. In contrast to a thermally-oxidized copper-oxide layer, the doped-carbon and a high ratio of Cu2O to CuO in the devised electrocatalyst may result in the higher productivity and selectivity.

Original languageEnglish
Pages (from-to)286-290
Number of pages5
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume79
Issue number799
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Fingerprint

electrocatalysts
Electrocatalysts
carbon dioxide
Carbon dioxide
Ethylene
ethylene
Copper oxides
copper oxides
Electrodes
Carbon
electrodes
Catalyst selectivity
carbon
Propanol
productivity
Methane
Ethanol
ethyl alcohol
methane
selectivity

Keywords

  • Carbon-doped copper oxide
  • Electrochemistry
  • Interfacial phenomena
  • Organic synthesis
  • Surface improvement

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

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abstract = "The carbon-doped copper oxide is devised as an electrocatalyst to reduce carbon dioxide under ambient pressure and temperature. The electrode was immersed into a KHCO3 aqueous solution with CO2 bubbling. The electric potential was maintained at -1.64 V vs SHE. The electrode prepared at 900 oC gives the maximum production rate of ethylene (25 {\%}), ethanol (6.9 {\%}) and 1-propanol (3.6 {\%}). The production rate of methane, from which is harmful to separate ethylene, was suppressed to one fifteenth of that of ethylene. In contrast to a thermally-oxidized copper-oxide layer, the doped-carbon and a high ratio of Cu2O to CuO in the devised electrocatalyst may result in the higher productivity and selectivity.",
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AB - The carbon-doped copper oxide is devised as an electrocatalyst to reduce carbon dioxide under ambient pressure and temperature. The electrode was immersed into a KHCO3 aqueous solution with CO2 bubbling. The electric potential was maintained at -1.64 V vs SHE. The electrode prepared at 900 oC gives the maximum production rate of ethylene (25 %), ethanol (6.9 %) and 1-propanol (3.6 %). The production rate of methane, from which is harmful to separate ethylene, was suppressed to one fifteenth of that of ethylene. In contrast to a thermally-oxidized copper-oxide layer, the doped-carbon and a high ratio of Cu2O to CuO in the devised electrocatalyst may result in the higher productivity and selectivity.

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