Highly Efficient and Selective Photocatalytic CO2 Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst

Arnau Call, Mihaela Cibian, Keiya Yamamoto, Takashi Nakazono, Kosei Yamauchi, Ken Sakai

研究成果: ジャーナルへの寄稿記事

抄録

The performance of a water-soluble cobalt porphyrin ([{meso-tetra(4-sulfonatophenyl)porphyrinato}cobalt(III)], CoTPPS) as a catalyst for the photoreduction of CO2 in fully aqueous media has been investigated under visible light irradiation using [Ru(bpy)3]2+ as a photosensitizer and ascorbate as a sacrificial electron donor. CO is selectively produced (>82%) with high efficiency (926 TONCO; TONCO = turnover number for CO). Upon optimization, selectivities of at least 91% are achieved. Efficiencies up to 4000 TONCO and 2400 h-1 TOFCO (TOFCO = turnover frequency for CO) are reached at low catalyst loadings, albeit with loss in selectivity. This work successfully demonstrates the ability of CoTPPS to perform highly efficient photoreduction of CO2 in water while retaining its high selectivity for CO formation.

元の言語英語
ページ(範囲)4867-4874
ページ数8
ジャーナルACS Catalysis
9
発行部数6
DOI
出版物ステータス出版済み - 6 7 2019

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Porphyrins
Carbon Monoxide
Cobalt
Catalysts
Photosensitizers
Water
Catalyst selectivity
Irradiation
Photosensitizing Agents
Electrons
cobalt(III)-tetrakis(4-sulfonatophenyl)porphyrin

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

これを引用

Highly Efficient and Selective Photocatalytic CO2 Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst. / Call, Arnau; Cibian, Mihaela; Yamamoto, Keiya; Nakazono, Takashi; Yamauchi, Kosei; Sakai, Ken.

:: ACS Catalysis, 巻 9, 番号 6, 07.06.2019, p. 4867-4874.

研究成果: ジャーナルへの寄稿記事

Call, Arnau ; Cibian, Mihaela ; Yamamoto, Keiya ; Nakazono, Takashi ; Yamauchi, Kosei ; Sakai, Ken. / Highly Efficient and Selective Photocatalytic CO2 Reduction to CO in Water by a Cobalt Porphyrin Molecular Catalyst. :: ACS Catalysis. 2019 ; 巻 9, 番号 6. pp. 4867-4874.
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AU - Yamauchi, Kosei

AU - Sakai, Ken

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