Photoelectrochemical reduction of CO2 to formate over a hybrid system of CuInS2 photocathode and formate dehydrogenase under visible-light irradiation

Takumi Toyodome; Yutaka Amao; Masanobu Higashi

doi:10.1039/D1NJ02481G

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Photoelectrochemical reduction of CO₂ to formate over a hybrid system of CuInS₂ photocathode and formate dehydrogenase under visible-light irradiation†

Takumi Toyodome,^a Yutaka Amao

*^ab and Masanobu Higashi

*^b

Author affiliations

* Corresponding authors

^a Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan

^b Research Centre for Artificial Photosynthesis (ReCAP), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
E-mail: east@osaka-cu.ac.jp

Abstract

A hybrid system with a CdS-modified CuInS₂ as the photocathode, methylviologen (MV) as the electron mediator, and biocatalytic formate dehydrogenase from Candida boidinii was prepared for photoelectrochemical reduction of CO₂ to formate. The photocathode exhibited a high photon-to-current conversion efficiency of ∼64% at 700 nm and 0.09 V vs. RHE.

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Article information

DOI: https://doi.org/10.1039/D1NJ02481G
Article type: Paper
Submitted: 20 May 2021
Accepted: 16 Jul 2021
First published: 27 Jul 2021

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New J. Chem., 2021,45, 14803-14807

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Photoelectrochemical reduction of CO₂ to formate over a hybrid system of CuInS₂ photocathode and formate dehydrogenase under visible-light irradiation

T. Toyodome, Y. Amao and M. Higashi, New J. Chem., 2021, 45, 14803 DOI: 10.1039/D1NJ02481G

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