Function-Integrated Ru Catalyst for Photochemical CO2 Reduction

Sze Koon Lee; Mio Kondo; Masaya Okamura; Takafumi Enomoto; Go Nakamura; Shigeyuki Masaoka

doi:10.1021/jacs.8b09933

Function-Integrated Ru Catalyst for Photochemical CO₂ Reduction

J Am Chem Soc. 2018 Dec 12;140(49):16899-16903. doi: 10.1021/jacs.8b09933. Epub 2018 Nov 28.

Authors

Sze Koon Lee^{1

2}, Mio Kondo^{1

2

3

4}, Masaya Okamura¹, Takafumi Enomoto^{1

2}, Go Nakamura^{1

2}, Shigeyuki Masaoka^{1

2

4}

Affiliations

¹ Department of Life and Coordination-Complex Molecular Science , Institute for Molecular Science (IMS) , 5-1 Higashiyama, Myodaiji , Okazaki , Aichi 444-8787 , Japan.
² Department of Structural Molecular Science , SOKENDAI (The Graduate University for Advanced Studies) , Shonan Village , Hayama , Kanagawa 240-0193 , Japan.
³ ACT-C, Japan Science and Technology Agency (JST) , 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan.
⁴ Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science (IMS) , 38 Nishigo-naka, Myodaiji , Okazaki , Aichi 444-8585 , Japan.

PMID: 30472827
DOI: 10.1021/jacs.8b09933

Abstract

Visible-light-driven catalytic reduction of CO₂ is at the heart of artificial photosynthesis. Here, we demonstrate the first example of a Ru complex that can function both as a photosensitizer and catalyst for CO₂ reduction. The catalyst exhibited excellent activity for CO evolution with a high turnover number (TON, 353 for 24 h), reaction rate (TOF, 14.7 h^-1), and product selectivity (97%) under visible-light irradiation. We also succeeded in selective product formation (CO or HCOOH) by changing the basicity of the reaction media. This finding will open new avenues for visible-light-driven photoredox catalysis using Ru-based function-integrated photocatalysts.

Publication types

Research Support, Non-U.S. Gov't