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Type: Journal article
Title: The controllable reconstruction of Bi‐MOFs for electrochemical CO₂ reduction through electrolyte and potential mediation
Other Titles: The controllable reconstruction of Bi‐MOFs for electrochemical CO(2) reduction through electrolyte and potential mediation
Author: Yao, D.
Tang, C.
Vasileff, A.
Zhi, X.
Jiao, Y.
Qiao, S.-Z.
Citation: Angewandte Chemie International Edition, 2021; 60(33):18178-18184
Publisher: Wiley
Issue Date: 2021
ISSN: 1433-7851
Statement of
Dazhi Yao, Cheng Tang, Anthony Vasileff, Xing Zhi, Yan Jiao, and Shi-Zhang Qiao
Abstract: Monitoring and controlling the reconstruction of materials under working conditions is crucial for the precise identification of active sites, elucidation of reaction mechanisms, and rational design of advanced catalysts. Herein, a Bi-based metal–organic framework (Bi-MOF) for electrochemical CO₂ reduction is selected as a case study. In situ Raman spectra combined with ex situ electron microscopy reveal that the intricate reconstruction of the Bi-MOF can be controlled using two steps: 1) electrolyte-mediated dissociation and conversion of Bi-MOF to Bi₂O₂CO₃, and 2) potential-mediated reduction of Bi₂O₂CO₃ to Bi. The intentionally reconstructed Bi catalyst exhibits excellent activity, selectivity, and durability for formate production, and the unsaturated surface Bi atoms formed during reconstruction become the active sites. This work emphasizes the significant impact of pre-catalyst reconstruction under working conditions and provides insight into the design of highly active and stable electrocatalysts through the regulation of these processes.
Keywords: Catalyst design; CO₂ reduction; controllable surface reconstruction; electrocatalysis; in situ characterization
Rights: © 2021 Wiley-VCH GmbH
DOI: 10.1002/anie.202104747
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Appears in Collections:Aurora harvest 4
Chemical Engineering publications

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