Photoelectrochemical Reduction of CO2 Coupled to Water Oxidation Using a Photocathode with a Ru(II)–Re(I) Complex Photocatalyst and a CoOx/TaON Photoanode | Zendy

Go Sahara | Zendy; Hiromu Kumagai | Zendy; Kazuhiko Maeda | Zendy; Nicolas Kaeffer | Zendy; Vincent Artero | Zendy; Masanobu Higashi | Zendy; Ryu Abe | Zendy; Osamu Ishitani | Zendy

Open Access

Photoelectrochemical Reduction of CO₂ Coupled to Water Oxidation Using a Photocathode with a Ru(II)–Re(I) Complex Photocatalyst and a CoO_x/TaON Photoanode

Author(s) -

Go Sahara,

Hiromu Kumagai,

Kazuhiko Maeda,

Nicolas Kaeffer,

Vincent Artero,

Masanobu Higashi,

Ryu Abe,

Osamu Ishitani

Publication year - 2016

Publication title -

journal of the american chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.115

H-Index - 612

eISSN - 1520-5126

pISSN - 0002-7863

DOI - 10.1021/jacs.6b09212

Subject(s) - photocathode , non blocking i/o , photocatalysis , chemistry , photoelectrochemical cell , visible spectrum , electrolyte , water splitting , aqueous solution , photoelectrochemistry , electrochemistry , selectivity , photochemistry , inorganic chemistry , electrode , optoelectronics , catalysis , materials science , biochemistry , physics , quantum mechanics , electron

Photoelectrochemical CO 2 reduction activity of a hybrid photocathode, based on a Ru(II)-Re(I) supramolecular metal complex photocatalyst immobilized on a NiO electrode (NiO-RuRe), was confirmed in an aqueous electrolyte solution. Under half-reaction conditions, the NiO-RuRe photocathode generated CO with high selectivity, and its turnover number for CO formation reached 32 based on the amount of immobilized RuRe. A photoelectrochemical cell comprising a NiO-RuRe photocathode and a CoO x /TaON photoanode showed activity for visible-light-driven CO 2 reduction using water as a reductant to generate CO and O 2 , with the assistance of an external electrical (0.3 V) and chemical (0.10 V) bias produced by a pH difference. This is the first example of a molecular and semiconductor photocatalyst hybrid-constructed photoelectrochemical cell for visible-light-driven CO 2 reduction using water as a reductant.

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