• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Self-sacrificial templated synthesis of a three-dimensional hierarchical macroporous honeycomb-like ZnO/ZnCo <inf>2</inf> O <inf>4</inf> hybrid for carbon monoxide sensing

    Author(s)
    Kaneti, Yusuf Valentino
    Septiani, Ni Luh Wulan
    Saptiama, Indra
    Jiang, Xuchuan
    Yuliarto, Brian
    Shiddiky, Muhammad JA
    Fukumitsu, Nobuyoshi
    Kang, Yong-Mook
    Golberg, Dmitri
    Yamauchi, Yusuke
    Griffith University Author(s)
    Shiddiky, Muhammad J.
    Year published
    2019
    Metadata
    Show full item record
    Abstract
    This work reports the fabrication of a three-dimensional (3D) zinc oxide/zinc cobaltite (ZnO/ZnCo 2 O 4 ) hybrid with a hierarchical macroporous honeycomb-like structure using highly uniform cobalt glycerate spheres as a self-sacrificial template. In the proposed method, the conversion of the template cobalt glycerate nanospheres into a 3D hierarchical macroporous honeycomb-like ZnO/ZnCo 2 O 4 hybrid is achieved via a facile room-temperature reaction with aqueous zinc nitrate solution, followed by calcination in air at 350 °C. The proposed method offers several benefits including (i) the attainment of the ZnO/ZnCo 2 O 4 ...
    View more >
    This work reports the fabrication of a three-dimensional (3D) zinc oxide/zinc cobaltite (ZnO/ZnCo 2 O 4 ) hybrid with a hierarchical macroporous honeycomb-like structure using highly uniform cobalt glycerate spheres as a self-sacrificial template. In the proposed method, the conversion of the template cobalt glycerate nanospheres into a 3D hierarchical macroporous honeycomb-like ZnO/ZnCo 2 O 4 hybrid is achieved via a facile room-temperature reaction with aqueous zinc nitrate solution, followed by calcination in air at 350 °C. The proposed method offers several benefits including (i) the attainment of the ZnO/ZnCo 2 O 4 hybrid in one step without additional or separate coating steps, (ii) the achievement of a unique 3D hierarchical macroporous honeycomb-like structure with interconnecting nanosheets and macropores which are assembled from smaller mesopores, leading to higher surface area and good interparticle separation, (iii) the relatively low calcination temperature required to obtain the ZnO/ZnCo 2 O 4 hybrid (350 °C) and (iv) potential generalization for the creation of other macroporous honeycomb-like cobalt-based oxide nanostructures (including Al-Co and Cu-Co systems). When evaluated as a sensing material for carbon monoxide (CO), the hierarchical honeycomb-like ZnO/ZnCo 2 O 4 hybrid sensor displays a higher sensing response with enhanced selectivity and stability towards CO gas at 300 °C compared to both ZnO hierarchical spheres and ZnCo 2 O 4 nanospheres. The enhanced sensing performance of the hierarchical honeycomb-like ZnO/ZnCo 2 O 4 hybrid is derived from the synergistic cooperation of the formed p-n heterojunction, large surface area and hierarchical macroporous nature of the as-synthesized ZnO/ZnCo 2 O 4 hybrid. It is expected that the proposed general method may open a new path for creating other hierarchical macroporous honeycomb-like oxide nanostructures with enhanced surface areas and improved functional performance.
    View less >
    Journal Title
    Journal of Materials Chemistry A
    Volume
    7
    Issue
    7
    DOI
    https://doi.org/10.1039/c8ta11380g
    Subject
    Macromolecular and materials chemistry
    Materials engineering
    Other engineering
    Publication URI
    http://hdl.handle.net/10072/383192
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander