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    Atomically Dispersed Transition Metals on Carbon Nanotubes with UltraHigh Loading for Selective Electrochemical Carbon Dioxide Reduction

    66723.pdf (1.914Mb)
    Access Status
    Open access
    Authors
    Cheng, Yi
    Zhao, S.
    Johannessen, B.
    Veder, Jean-Pierre
    Saunders, M.
    Rowles, Matthew
    Cheng, M.
    Liu, C.
    Chisholm, M.
    De Marco, Roland
    Cheng, H.
    Yang, S.
    Jiang, San Ping
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Cheng, Y. and Zhao, S. and Johannessen, B. and Veder, J. and Saunders, M. and Rowles, M. and Cheng, M. et al. 2018. Atomically Dispersed Transition Metals on Carbon Nanotubes with UltraHigh Loading for Selective Electrochemical Carbon Dioxide Reduction. Advanced Materials.
    Source Title
    Advanced Materials
    DOI
    10.1002/adma.201706287
    ISSN
    0935-9648
    School
    Fuels and Energy Technology Institute
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150102025
    http://purl.org/au-research/grants/arc/DP150102044
    http://purl.org/au-research/grants/arc/DP180100568
    http://purl.org/au-research/grants/arc/DP180100731
    URI
    http://hdl.handle.net/20.500.11937/66522
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Single-atom catalysts (SACs) are the smallest entities for catalytic reactions with projected high atomic efficiency, superior activity, and selectivity; however, practical applications of SACs suffer from a very low metal loading of 1-2 wt%. Here, a class of SACs based on atomically dispersed transition metals on nitrogen-doped carbon nanotubes (MSA-N-CNTs, where M = Ni, Co, NiCo, CoFe, and NiPt) is synthesized with an extraordinarily high metal loading, e.g., 20 wt% in the case of NiSA-N-CNTs, using a new multistep pyrolysis process. Among these materials, NiSA-N-CNTs show an excellent selectivity and activity for the electrochemical reduction of CO 2 to CO, achieving a turnover frequency (TOF) of 11.7 s -1 at -0.55 V (vs reversible hydrogen electrode (RHE)), two orders of magnitude higher than Ni nanoparticles supported on CNTs.

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