Fast oxygen ion migration in Cu-In-oxide bulk and its utilization for effective CO2conversion at lower temperature

Jun Ichiro Makiura, Takuma Higo, Yutaro Kurosawa, Kota Murakami, Shuhei Ogo, Hideaki Tsuneki, Yasushi Hashimoto, Yasushi Sato, Yasushi Sekine

Research output: Contribution to journalArticlepeer-review

Abstract

Efficient activation of CO2at low temperature was achieved by reverse water-gas shiftviachemical looping (RWGS-CL) by virtue of fast oxygen ion migration in a Cu-In structured oxide, even at lower temperatures. Results show that a novel Cu-In2O3structured oxide can show a remarkably higher CO2splitting rate than ever reported. Various analyses revealed that RWGS-CL on Cu-In2O3is derived from redox between Cu-In2O3and Cu-In alloy. Key factors for high CO2splitting rate were fast migration of oxide ions in the alloy and the preferential oxidation of the interface of alloy-In2O3in the bulk of the particles. The findings reported herein can open up new avenues to achieve effective CO2conversion at lower temperatures.

Original languageEnglish
Pages (from-to)2108-2113
Number of pages6
JournalChemical Science
Volume12
Issue number6
DOIs
Publication statusPublished - 2021 Feb 14

ASJC Scopus subject areas

  • Chemistry(all)

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