Preparation of conductive bimetallic phthalocyanine with acceptor and their electrocatalytic properties for CO2 reduction

In order to develop a catalyst for electrochemical CO2 reduction with high power efficiency, we prepared molecular crystals with 2 types of metal phthalocyanine. Charge transfer complexes with acceptor were selected as the molecular crystal system to reduce the electrical resistance. Various bimetal...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 2024-11, Vol.97 (11)
Main Authors: Takase, Satoko, Aritsu, Taku, Kamikawa, Yuki, Takizawa, Toshiyuki, Shimizu, Youichi
Format: Article
Language:English
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Summary:In order to develop a catalyst for electrochemical CO2 reduction with high power efficiency, we prepared molecular crystals with 2 types of metal phthalocyanine. Charge transfer complexes with acceptor were selected as the molecular crystal system to reduce the electrical resistance. Various bimetallic phthalocyanine systems consisting of cobalt phthalocyanine and another metal phthalocyanine were obtained as highly conductive separated stacked charge transfer complexes with iodine as an acceptor. The obtained catalysts for CO2 reduction were evaluated using gas diffusion electrodes. The catalysts containing the bimetallic phthalocyanine system of cobalt and copper phthalocyanines showed higher CO2 reduction current and higher CO production, indicating that the CO2 reduction on cobalt phthalocyanine is enhanced by the H2 formation reaction on copper phthalocyanine.
ISSN:0009-2673
1348-0634
DOI:10.1093/bulcsj/uoae116