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Issue 8, 2019
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Controlled synthesis of a Bi2O3–CuO catalyst for selective electrochemical reduction of CO2 to formate

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Abstract

The electro-reduction of CO2 to produce energy sources has been considered as a visionary pathway with the help of renewable electricity, which can achieve carbon neutrality and mitigate global warming. Nevertheless, developing a high selectivity, good activity and superior stability catalyst is a big challenge. Here, Bi2O3–CuO(x) bimetallic oxide catalysts were synthesized by a facile coordination–precipitation method with concisely controlled atomic ratios (Cu/Bi). They exhibit a remarkable performance for sufficient reduction of CO2 to formate, achieving a maximum faradaic efficiency of 89.3% at a potential of −1.4 V vs. SCE. The catalysts are shown to be robust during 10 h of uninterrupted electrolysis. The notable catalytic activity suggests that controlling the Cu/Bi molar ratio is a key factor in developing special micro-structure Bi2O3–CuO(x) catalysts for electrochemical reduction of CO2 to formate in aqueous systems.

Graphical abstract: Controlled synthesis of a Bi2O3–CuO catalyst for selective electrochemical reduction of CO2 to formate

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Publication details

The article was received on 13 Oct 2018, accepted on 23 Jan 2019 and first published on 24 Jan 2019


Article type: Paper
DOI: 10.1039/C8NJ05205K
Citation: New J. Chem., 2019,43, 3493-3499

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    Controlled synthesis of a Bi2O3–CuO catalyst for selective electrochemical reduction of CO2 to formate

    C. Dai, Y. Qiu, Y. He, Q. Zhang, R. Liu, J. Du and C. Tao, New J. Chem., 2019, 43, 3493
    DOI: 10.1039/C8NJ05205K

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