title: Photoelectrochemical conversion of toluene to methylcyclohexane as an organic hydride by Cu2ZnSnS4-based photoelectrode assemblies.
abstract: 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(2)ZnSnS(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(2)SO(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.
authors.affiliation: Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Minegishi
authors.forename: Guijun
authors.initials: G
authors.lastname: Ma
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Takanabe
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Satou
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Maekawa
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Kobori
authors.forename: Jun
authors.initials: J
authors.lastname: Kubota
authors.forename: Kazunari
authors.initials: K
authors.lastname: Domen
mesh_terms: D003300:Copper / Q000737:chemistry*; D003510:Cyclohexanes / Q000138:chemical synthesis* / Q000737:chemistry; D004563:Electrochemistry; D004566:Electrodes; D010316:Particle Size; D010777:Photochemistry; D013455:Sulfur / Q000737:chemistry*; D013499:Surface Properties; D014001:Tin / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D003510:Cyclohexanes; D014050:Toluene; D013455:Sulfur; D014001:Tin; D003300:Copper; C521475:methylcyclohexane; D015032:Zinc