Highly efficient, selective, and durable photocatalytic system for CO2 reduction to formic acid

Yusuke Tamaki; Kazuhide Koike; Osamu Ishitani

doi:10.1039/C5SC02018B

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Highly efficient, selective, and durable photocatalytic system for CO₂ reduction to formic acid†

Yusuke Tamaki,^ab Kazuhide Koike^c and Osamu Ishitani*^ab

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* Corresponding authors

^a Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-1 O-okayama, Meguro-ku, Tokyo, Japan
E-mail: ishitani@chem.titech.ac.jp

^b CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi-city, Saitama, Japan

^c National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba 305-8569, Japan

Abstract

We discovered an extremely suitable sacrificial electron donor, 1,3-dimethyl-2-(o-hydroxyphenyl)-2,3-dihydro-1H-benzo[d]imidazole, for the selective photocatalytic reduction of CO₂ to formic acid using a Ru(II)–Ru(II) supramolecular photocatalyst. The efficiency, durability, and rate of photocatalysis are significantly increased (Φ_HCOOH = 0.46, TON_HCOOH = 2766, TOF_HCOOH = 44.9 min⁻¹) in comparison with those using 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole or 1-benzyl-1,4-dihydronicotinamide.

This article is part of the themed collections: In celebration of Kazunari Domen’s 65th birthday, 2018 and Global Energy Challenges: Hydrogen Energy

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Article information

DOI: https://doi.org/10.1039/C5SC02018B
Article type: Edge Article
Submitted: 05 Jun 2015
Accepted: 28 Aug 2015
First published: 29 Sep 2015
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry

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Chem. Sci., 2015,6, 7213-7221

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Highly efficient, selective, and durable photocatalytic system for CO₂ reduction to formic acid

Y. Tamaki, K. Koike and O. Ishitani, Chem. Sci., 2015, 6, 7213 DOI: 10.1039/C5SC02018B

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