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    Synthesis of magnetically separable Fe3O4–Au–CdS kinked heterotrimers incorporating plasmonic and semiconducting functionalities

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    Fulltext not available
    Authors
    Javaid, S.
    Li, X.
    Wang, F.
    Chen, W.
    Pang, Ying Ping
    Wang, Shaobin
    Jia, Guohua
    Jones, Franca
    Date
    2019
    Type
    Journal Article
    
    Metadata
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    Citation
    Javaid, S. and Li, X. and Wang, F. and Chen, W. and Pang, Y. and Wang, S. and Jia, G. et al. 2019. Synthesis of magnetically separable Fe3O4–Au–CdS kinked heterotrimers incorporating plasmonic and semiconducting functionalities. Journal of Materials Chemistry C. 7 (46): pp. 14517-14524.
    Source Title
    Journal of Materials Chemistry C
    DOI
    10.1039/c9tc03538a
    ISSN
    2050-7534
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    URI
    http://hdl.handle.net/20.500.11937/79511
    Collection
    • Curtin Research Publications
    Abstract

    This journal is © The Royal Society of Chemistry. Dimension, composition and configuration are the primary aspects of semiconductor based hybrid heterostructures that govern their properties. To achieve desired functionalities within a single nanoparticle system, numerous synthetic approaches are available which may be suitable for achieving the target combination but these can be complex and tedious. In this work, a simple seeded-growth approach was employed to obtain an iron oxide-gold-cadmium sulfide (Fe3O4-Au-CdS) heterotrimer with a unique morphology manifesting magnetic, plasmonic and semiconducting properties. In a straightforward two-step synthesis process, Au-Fe3O4 dimer was injected as a seed into the Cd precursor solution for the growth of one-dimensional (1D) kinked CdS-5 nanorods on it. The synthesized Fe3O4-Au-CdS heterotrimer was tested in photocatalytic water-reduction reaction, revealing its potential as a photocatalyst for the hydrogen evolution reaction (HER), where each domain within the heterotrimer played a distinct role including light absorption, charge separation and magnetic separation. A post-synthetic modification on the semiconductor part was also performed where kinked CdS nanorod was cation exchanged with Ag2S leading to the formation of another heterotrimer of Fe3O4-Au-Ag2S while retaining the same morphology and expanding the palette of heterotrimers.

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