Graphene-encapsulated nickel–copper bimetallic nanoparticle catalysts for electrochemical reduction of CO2 to CO

Chaochen Xu; Anthony Vasileff; Bo Jin; Dan Wang; Haolan Xu; Yao Zheng; Shi-Zhang Qiao

doi:10.1039/D0CC04779A

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Graphene-encapsulated nickel–copper bimetallic nanoparticle catalysts for electrochemical reduction of CO₂ to CO†

Chaochen Xu,

^a Anthony Vasileff,

^a Bo Jin,^a Dan Wang,

^b Haolan Xu,

^c Yao Zheng

*^a and Shi-Zhang Qiao

*^a

Author affiliations

* Corresponding authors

^a Centre for Materials in Energy and Catalysis, School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
E-mail: s.qiao@adelaide.edu.au, yao.zheng01@adelaide.edu.au

^b Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China

^c Future Industries Institute, University of South Australia, SA 5095, Australia

Abstract

Highly selective CO₂ electroreduction to CO (∼90% faradaic efficiency) was achieved on NiCu_0.25 bimetallic nanoparticle catalysts. By combining Synchrotron based X-ray absorption and in situ Raman spectroscopy studies, we found that there is a negative correlation between the Cu content in NiCu_x and CO selectivity due to redistribution of the 3d electrons.

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Article information

DOI: https://doi.org/10.1039/D0CC04779A
Article type: Communication
Submitted: 10 Jul 2020
Accepted: 11 Aug 2020
First published: 17 Aug 2020

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Chem. Commun., 2020,56, 11275-11278

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Graphene-encapsulated nickel–copper bimetallic nanoparticle catalysts for electrochemical reduction of CO₂ to CO

C. Xu, A. Vasileff, B. Jin, D. Wang, H. Xu, Y. Zheng and S. Qiao, Chem. Commun., 2020, 56, 11275 DOI: 10.1039/D0CC04779A

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