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Fast oxygen ion migration in Cu-In-oxide bulk and its utilization for effective CO₂ conversion at lower temperature.

ABSTRACT: Efficient activation of CO₂ at low temperature was achieved by reverse water-gas shift via chemical 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-In₂O₃ structured oxide can show a remarkably higher CO₂ splitting rate than ever reported. Various analyses revealed that RWGS-CL on Cu-In₂O₃ is derived from redox between Cu-In₂O₃ and Cu-In alloy. Key factors for high CO₂ splitting rate were fast migration of oxide ions in the alloy and the preferential oxidation of the interface of alloy-In₂O₃ in the bulk of the particles. The findings reported herein can open up new avenues to achieve effective CO₂ conversion at lower temperatures.

SUBMITTER: Makiura JI

PROVIDER: S-EPMC8179332 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Fast oxygen ion migration in Cu-In-oxide bulk and its utilization for effective CO2 conversion at lower temperature.

Makiura Jun-Ichiro JI Higo Takuma T Kurosawa Yutaro Y Murakami Kota K Ogo Shuhei S Tsuneki Hideaki H Hashimoto Yasushi Y Sato Yasushi Y Sekine Yasushi Y

Chemical science 20201223 6

Efficient activation of CO2 at low temperature was achieved by reverse water-gas shift via chemical 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-In2O3 structured oxide can show a remarkably higher CO2 splitting rate than ever reported. Various analyses revealed that RWGS-CL on Cu-In2O3 is derived from redox between Cu-In2< ...[more]

PMID: 34163974

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