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    A synthetic strategy for carbon nanospheres impregnated with highly monodispersed metal nanoparticles

    Access Status
    Open access via publisher
    Authors
    Yang, T.
    Ling, H.
    Lamonier, J.
    Jaroniec, M.
    Huang, J.
    Monteiro, M.
    Liu, Jian
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yang, T. and Ling, H. and Lamonier, J. and Jaroniec, M. and Huang, J. and Monteiro, M. and Liu, J. 2016. A synthetic strategy for carbon nanospheres impregnated with highly monodispersed metal nanoparticles. npg asia materials. 8: Article ID e240.
    Source Title
    NPG ASIA MATERIALS
    DOI
    10.1038/am.2015.145
    ISSN
    1884-4049
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/LP150101158
    URI
    http://hdl.handle.net/20.500.11937/31021
    Collection
    • Curtin Research Publications
    Abstract

    N-doped mesoporous carbon nanospheres (N-MCN@M) impregnated with uniformly dispersed noble-metal (Au, Pt, Rh, Ru, Ag, Pd and Ir) nanoparticles are rationally designed and synthesized for hydrogenation reactions. This facile and generally applicable synthetic strategy ensured confinement of the noble-metal nanoparticles within different carbon morphologies, including mesoporous spheres, hollow particles and core–shell particles. High loading of the noble-metal nanoparticles from 8 to 44% was accomplished by tuning the initial concentration of metal salts. Even at very high loadings (>40 wt%), a homogeneous dispersion of uniform metal nanoparticles throughout the carbon nanostructures was achieved. The proposed synthesis is also well suited for the fabrication of carbon spheres loaded with bimetallic nanoparticles (AuPt, AuRh and PtRh). Examination of these metal-loaded carbon particles as catalysts for the hydrogenation of benzaldehyde gave 100% selectivity toward carbonyl group at room and higher reaction temperatures. The outstanding performance of Au nanoparticles gave an unprecedented turn over frequency 2–4 times greater than those of Pt nanoparticles with the same size, loading and support.

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