Selectivity control of CO2 reduction in an inorganic artificial photosynthesis system

Hiroshi Hashiba; Satoshi Yotsuhashi; Masahiro Deguchi; Yuka Yamada; Kazuhiro Ohkawa

doi:10.7567/APEX.6.097102

Selectivity control of CO₂ reduction in an inorganic artificial photosynthesis system

Hiroshi Hashiba^*, Satoshi Yotsuhashi, Masahiro Deguchi, Yuka Yamada, Kazuhiro Ohkawa

^*Corresponding author for this work

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

10 Scopus citations

Abstract

We demonstrated that the selectivity of photo electrochemical CO ₂ reduction can be controlled in an inorganic artificial photosynthesis system using an AlGaN/GaN photo electrode. By increasing input light intensity and the use of a gold cathode, the Faradaic efficiency of CO dramatically increases from 30% to over 80% while that of H₂ decreases. We observed that the cathode potential resulting from illumination determines the ratio of CO and H₂. With this system, it is possible to switch the main reaction product from CO to HCOOH, which is also effective even under intense illumination.

Original language	English (US)
Article number	097102
Journal	APPLIED PHYSICS EXPRESS
Volume	6
Issue number	9
DOIs	https://doi.org/10.7567/APEX.6.097102
State	Published - Sep 2013
Externally published	Yes

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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abstract = "We demonstrated that the selectivity of photo electrochemical CO 2 reduction can be controlled in an inorganic artificial photosynthesis system using an AlGaN/GaN photo electrode. By increasing input light intensity and the use of a gold cathode, the Faradaic efficiency of CO dramatically increases from 30% to over 80% while that of H2 decreases. We observed that the cathode potential resulting from illumination determines the ratio of CO and H2. With this system, it is possible to switch the main reaction product from CO to HCOOH, which is also effective even under intense illumination.",

author = "Hiroshi Hashiba and Satoshi Yotsuhashi and Masahiro Deguchi and Yuka Yamada and Kazuhiro Ohkawa",

year = "2013",

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AU - Hashiba, Hiroshi

AU - Yotsuhashi, Satoshi

AU - Deguchi, Masahiro

AU - Yamada, Yuka

AU - Ohkawa, Kazuhiro

PY - 2013/9

Y1 - 2013/9

N2 - We demonstrated that the selectivity of photo electrochemical CO 2 reduction can be controlled in an inorganic artificial photosynthesis system using an AlGaN/GaN photo electrode. By increasing input light intensity and the use of a gold cathode, the Faradaic efficiency of CO dramatically increases from 30% to over 80% while that of H2 decreases. We observed that the cathode potential resulting from illumination determines the ratio of CO and H2. With this system, it is possible to switch the main reaction product from CO to HCOOH, which is also effective even under intense illumination.

AB - We demonstrated that the selectivity of photo electrochemical CO 2 reduction can be controlled in an inorganic artificial photosynthesis system using an AlGaN/GaN photo electrode. By increasing input light intensity and the use of a gold cathode, the Faradaic efficiency of CO dramatically increases from 30% to over 80% while that of H2 decreases. We observed that the cathode potential resulting from illumination determines the ratio of CO and H2. With this system, it is possible to switch the main reaction product from CO to HCOOH, which is also effective even under intense illumination.

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Selectivity control of CO₂ reduction in an inorganic artificial photosynthesis system

Abstract

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