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    Sub-5 nm porous nanocrystals: interfacial site-directed growth on graphene for efficient biocatalysis

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    Author
    Kong, B; Sun, X; Selomulya, C; Tang, J; Zheng, G; Wang, Y; Zhao, D
    Date
    2015-01-01
    Source Title
    Chemical Science
    Publisher
    ROYAL SOC CHEMISTRY
    University of Melbourne Author/s
    KONG, BIAO
    Affiliation
    Chemical and Biomolecular Engineering
    Metadata
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    Document Type
    Journal Article
    Citations
    Kong, B., Sun, X., Selomulya, C., Tang, J., Zheng, G., Wang, Y. & Zhao, D. (2015). Sub-5 nm porous nanocrystals: interfacial site-directed growth on graphene for efficient biocatalysis. CHEMICAL SCIENCE, 6 (7), pp.4029-4034. https://doi.org/10.1039/c5sc00819k.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/258036
    DOI
    10.1039/c5sc00819k
    Abstract
    The direct production of macromolecular scale (sub-5 nm) porous nanocrystals with high surface area has been a considerable challenge over the past two decades. Here we report an interfacial site-directed capping agent-free growth method to directly produce porous ultrasmall (sub-5 nm), fully crystalline, macromolecular scale nanocrystals. The porous sub-5 nm Prussian blue nanocrystals exhibit uniform sizes (∼4 ± 1 nm), high surface area (∼855 m2 g-1), fast electron transfer (rate constant of ∼9.73 s-1), and outstanding sustained catalytic activity (more than 450 days). The nanocrystal-based biointerfaces enable unprecedented sub-nanomolar level recognition of hydrogen peroxide (∼0.5 nM limit of detection). This method also paves the way towards the creation of ultrasmall porous nanocrystals for efficient biocatalysis.

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