Selective production of methanol by the electrochemical reduction of CO2 on boron-doped diamond electrodes in aqueous ammonia solution

Prastika K. Jiwanti, Keisuke Natsui, Kazuya Nakata, Yasuaki Einaga

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The electrochemical reduction of CO2 was investigated in an aqueous ammonia solution using boron-doped diamond electrodes. Methanol was mainly produced by reduction at a potential of -1.3 V (vs. Ag/AgCl) with a faradaic efficiency as high as 24.3%. Also, even in an aqueous ammonium bicarbonate solution (pH 7.9) without CO2 bubbling, methanol was produced, while no methanol production was observed at higher (10.6) and lower pH (3.38). These observations suggest that the selectivity for methanol production in aqueous ammonia solutions is due to the electrochemical reduction of bicarbonate ions which are formed by the reaction between ammonia and CO2. Moreover, we present the important role of ammonia as an electrolyte for the selective production of methanol by electrochemical reduction of CO2.

Original languageEnglish
Pages (from-to)102214-102217
Number of pages4
JournalRSC Advances
Volume6
Issue number104
DOIs
Publication statusPublished - 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Selective production of methanol by the electrochemical reduction of CO<sub>2</sub> on boron-doped diamond electrodes in aqueous ammonia solution'. Together they form a unique fingerprint.

  • Cite this