Pyrochlore-type Bi<sub>2</sub>Sn<sub>2</sub>O<sub>7</sub> oxide as an electrocatalyst for carbon dioxide reduction
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- MORI Atsuki
- Department of Applied Chemistry, Kyushu Institute of Technology
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- KAWAMURA Misato
- Department of Applied Chemistry, Kyushu Institute of Technology
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- TAKASE Satoko
- Department of Applied Chemistry, Kyushu Institute of Technology
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- SHIMIZU Youichi
- Department of Applied Chemistry, Kyushu Institute of Technology
Abstract
<p>Pyrochlore-type A2B2O7−z (A = Pb, Bi; B = Nb, Ru, Sn, Ir) oxide fine powders were synthesized by a wet-chemical method. The electrochemical reduction properties of carbon dioxide were investigated with carbon-based gas-diffusion-type electrodes loaded with various pyrochlore-type oxide catalysts. The current–voltage curves under pure CO2 gas flow showed that the Sn-based pyrochlore-type oxides gave high electrocatalytic activities for the electrochemical CO2 reduction. Among the pyrochlore-type oxides tested, Bi2Sn2O7 showed the highest CO2 reduction reaction which gave CO as a main product at very high concentration. XPS analyses showed that the high performance for the electrochemical CO2 reduction of Bi2Sn2O7 was come from the valence state of Sn and/or oxygen adsorption–desorption properties of the pyrochlore-type oxide.</p>
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 126 (10), 843-846, 2018-10-01
The Ceramic Society of Japan
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Details
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- CRID
- 1390845713003800960
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- NII Article ID
- 130007490851
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- ISSN
- 13486535
- 18820743
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed