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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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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