Photoelectrochemical conversion of toluene to methylcyclohexane as an organic hydride by Cu 2ZnSnS 4-based photoelectrode assemblies

Peng Wang, Tsutomu Minegishi, Guijun Ma, Kazuhiro Takanabe, Yasushi Satou, Shunsuke Maekawa, Yoshihiro Kobori, Jun Kubota, Kazunari Domen

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56 Scopus citations


Direct photoelectrochemical conversion of toluene (TL) to methylcyclohexane (MC) with water has been examined as an organic hydride conversion using light irradiation. The production of MC from TL was observed on Pt/CdS/Cu 2ZnSnS 4/Mo photoelectrodes with anion-type ionomer membrane assemblies. A cathodic photocurrent was observed below 0.7 V vs RHE (V RHE) in 0.1 M Na 2SO 4/NaOH (pH 9.5) aqueous solution, and an apparent photocurrent density of 0.5 mA cm -2 was obtained at 0 V RHE under the irradiation of a 300 W Xe lamp with a 420 nm cutoff filter. The yield of MC was measured by gas chromatography, and an 88% faradaic efficiency was estimated. This study suggests the possibility of direct energy conversion from solar energy to MC as an energy carrier of organic hydrides. © 2012 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)2469-2472
Number of pages4
JournalJournal of the American Chemical Society
Issue number5
StatePublished - Jan 30 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: P.W. is a Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellow. This work is based on collaborative research with JX Nippon Oil & Energy Corporation and was supported in part by a Grant-in-Aid for Specially Promoted Research (23000009) from JSPS. This work was carried out under the international exchange program of the A3 Foresight Program of JSPS.

ASJC Scopus subject areas

  • Biochemistry
  • Colloid and Surface Chemistry
  • General Chemistry
  • Catalysis


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