• 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
  • Thiourea sole doping reagent approach for controllable N, S co-doping of pre-synthesized large-sized carbon nanospheres as electrocatalyst for oxygen reduction reaction

    Author(s)
    Chen, Jiangyao
    Zhang, Haimin
    Liu, Porun
    Li, Yibing
    Li, Guiying
    An, Taicheng
    Zhao, Huijun
    Griffith University Author(s)
    Zhao, Huijun
    Liu, Porun
    Year published
    2015
    Metadata
    Show full item record
    Abstract
    The co-doping of heteroatoms into the pre-synthesized graphitic carbons normally requires the use of different doping reagents as heteroatom sources, leading to difficulties in controlling the contents of doped heteroatoms and their chemical bonding forms with graphitic structures. Graphitic carbon-based electrocatalysts with a relatively large size, rich microporous structure and high surface area could possess better structural stability and enhanced conductivity than those of small-sized carbon nanostructures (e.g., nanodots). This study reported the use of a sole reagent (thiourea) as heteroatoms doping source to achieve ...
    View more >
    The co-doping of heteroatoms into the pre-synthesized graphitic carbons normally requires the use of different doping reagents as heteroatom sources, leading to difficulties in controlling the contents of doped heteroatoms and their chemical bonding forms with graphitic structures. Graphitic carbon-based electrocatalysts with a relatively large size, rich microporous structure and high surface area could possess better structural stability and enhanced conductivity than those of small-sized carbon nanostructures (e.g., nanodots). This study reported the use of a sole reagent (thiourea) as heteroatoms doping source to achieve controllable N, S co-doping of the pre-synthesized graphitic microporous carbon nanospheres (∼100 nm in diameter) via a facial thermolysis process to produce high performance oxygen reduction reaction electrocatalysts. Results showed that the contents of the doped N, S and their chemical bonds with graphitic carbon structures could be simply controlled by controlling the thermolysis temperatures. With the experimental conditions investigated, the best performed electrocatalyst was obtained from 1100 °C doping process that possessed the most suitable N, S doping contents with 100% of doped N being in electrocatalytically active pyridinic-N and graphitic-N forms. The approach reported in this work could be useful for controllable heteroatoms co-doping of other types of new generation graphitic carbon materials.
    View less >
    Journal Title
    Carbon
    Volume
    92
    DOI
    https://doi.org/10.1016/j.carbon.2015.04.090
    Subject
    Physical sciences
    Other physical sciences not elsewhere classified
    Chemical sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/102551
    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