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    Synthesis of “sea urchin”-like carbon nanotubes/porous carbon superstructures derived from waste biomass for treatment of various contaminants

    Access Status
    Fulltext not available
    Authors
    Yao, Y.
    Lian, C.
    Wu, G.
    Hu, Y.
    Wei, F.
    Yu, M.
    Wang, Shaobin
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yao, Y. and Lian, C. and Wu, G. and Hu, Y. and Wei, F. and Yu, M. and Wang, S. 2017. Synthesis of “sea urchin”-like carbon nanotubes/porous carbon superstructures derived from waste biomass for treatment of various contaminants. Applied Catalysis B: Environmental. 219: pp. 563-571.
    Source Title
    Applied Catalysis B: Environmental
    DOI
    10.1016/j.apcatb.2017.07.064
    ISSN
    0926-3373
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150103026
    URI
    http://hdl.handle.net/20.500.11937/56811
    Collection
    • Curtin Research Publications
    Abstract

    Novel “sea urchin”-like Ni nanoparticles embedded in N-doped carbon nanotubes (CNTs) supported on porous carbon (Ni@N-C) 3D materials derived from waste biomass were prepared via pyrolysis and employed as an environmentally friendly, easy available and cost-effective catalyst for removal of toxic pollutants. The characterizations indicated that Ni 0 catalyzed the growth of intertwined CNTs on carbon layers, affording abundant porous structures and larger specific surface area. With the synergistic effect of embedded Ni 0 nanoparticles, nitrogen doping, hierarchical micro-mesopores, and interconnected CNTs, Ni@N-C displayed a superior catalytic capability for the oxidation of organic pollutants using peroxymonosulfate as an oxidant, and catalytic reduction of toxic Cr VI to nontoxic Cr III by formic acid as a reducing agent. It was found that pyrolysis temperatures affected the compositions, morphologies, and catalytic properties of Ni@N-C. Inactive oxidized N species have transformed to the highly active graphitic N, pyridinic-N, and Ni-O-N clusters, thereby improving the catalytic activity. Moreover, Ni@N-C maintained good physicochemical structure and stable activity even after several cycles of reactions. The simple synthetic strategies, 3D structure, and remarkable performance of Ni@N-C composites make them serve as alternative environmentally friendly catalysts for removal of pollutants.

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