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

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

doi:10.1021/jacs.6b09212

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

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

Research output: Contribution to journal › Article › peer-review

174 Citations (Scopus)

Abstract

Photoelectrochemical CO₂ 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 CO₂ reduction using water as a reductant to generate CO and O₂, 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 CO₂ reduction using water as a reductant.

Original language	English
Pages (from-to)	14152-14158
Number of pages	7
Journal	Journal of the American Chemical Society
Volume	138
Issue number	42
DOIs	https://doi.org/10.1021/jacs.6b09212
Publication status	Published - 2016 Oct 26
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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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. / Sahara, Go; Kumagai, Hiromu; Maeda, Kazuhiko; Kaeffer, Nicolas; Artero, Vincent; Higashi, Masanobu; Abe, Ryu; Ishitani, Osamu.

In: Journal of the American Chemical Society, Vol. 138, No. 42, 26.10.2016, p. 14152-14158.

Research output: Contribution to journal › Article › peer-review

Sahara, Go ; Kumagai, Hiromu ; Maeda, Kazuhiko ; Kaeffer, Nicolas ; Artero, Vincent ; Higashi, Masanobu ; Abe, Ryu ; Ishitani, Osamu. / 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. In: Journal of the American Chemical Society. 2016 ; Vol. 138, No. 42. pp. 14152-14158.

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title = "Photoelectrochemical Reduction of CO2 Coupled to Water Oxidation Using a Photocathode with a Ru(II)-Re(I) Complex Photocatalyst and a CoOx/TaON Photoanode",

abstract = "Photoelectrochemical CO2 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 CoOx/TaON photoanode showed activity for visible-light-driven CO2 reduction using water as a reductant to generate CO and O2, 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 CO2 reduction using water as a reductant.",

author = "Go Sahara and Hiromu Kumagai and Kazuhiko Maeda and Nicolas Kaeffer and Vincent Artero and Masanobu Higashi and Ryu Abe and Osamu Ishitani",

note = "Funding Information: This work was supported by Strategic International Collaborative Research Program (PhotoCAT project) from both Japan Science and Technology Agency (JST) and the French National Research Agency (ANR-14-JTIC-0004-01) and CREST (Molecular Technology project, JST). This is also partially supported by a Grant-in-Aid for Scientific Research on Innovative Area Artificial Photosynthesis (Project 24107005) from the Japan Society for the Promotion of Science (JSPS) and the Photon and Quantum Basic Research Coordinated Development Program (MEXT, Japan). N.K. and V.A. acknowledge Labex program, ARCANE, ANR-11-LABX-0003-01 (French National Research Agency). K.M. acknowledges the Noguchi Institute, and the Murata Science Foundation Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Artero, Vincent

AU - Higashi, Masanobu

AU - Abe, Ryu

AU - Ishitani, Osamu

N1 - Funding Information: This work was supported by Strategic International Collaborative Research Program (PhotoCAT project) from both Japan Science and Technology Agency (JST) and the French National Research Agency (ANR-14-JTIC-0004-01) and CREST (Molecular Technology project, JST). This is also partially supported by a Grant-in-Aid for Scientific Research on Innovative Area Artificial Photosynthesis (Project 24107005) from the Japan Society for the Promotion of Science (JSPS) and the Photon and Quantum Basic Research Coordinated Development Program (MEXT, Japan). N.K. and V.A. acknowledge Labex program, ARCANE, ANR-11-LABX-0003-01 (French National Research Agency). K.M. acknowledges the Noguchi Institute, and the Murata Science Foundation Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/10/26

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N2 - Photoelectrochemical CO2 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 CoOx/TaON photoanode showed activity for visible-light-driven CO2 reduction using water as a reductant to generate CO and O2, 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 CO2 reduction using water as a reductant.

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