Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
Feature: The 56th Symposium on Basic Science of Ceramics: Notes
Pyrochlore-type Bi2Sn2O7 oxide as an electrocatalyst for carbon dioxide reduction
Atsuki MORIMisato KAWAMURASatoko TAKASEYouichi SHIMIZU
Author information
JOURNALS FREE ACCESS

2018 Volume 126 Issue 10 Pages 843-846

Details
Abstract

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.

Information related to the author
© 2018 The Ceramic Society of Japan
Previous article Next article
feedback
Top