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  • Nitrogen-Doped Carbon Nanodots@Nanospheres as An Efficient Electrocatalyst for Oxygen Reduction Reaction

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    Author(s)
    Zhang, Haimin
    Chen, Jiangyao
    Li, Yibing
    Liu, Porun
    Wang, Yun
    An, Taicheng
    Zhao, Huijun
    Griffith University Author(s)
    Zhao, Huijun
    Zhang, Haimin
    Liu, Porun
    Wang, Yun
    Li, Yibing
    Chen, Ying
    Year published
    2015
    Metadata
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    Abstract
    In this work, nitrogen-doped carbon nanodots (N-CNDs) with sizes of 2–6 nm were successfully synthesized by hydrothermal treatment of natural biomass (e.g., fresh grass) at 180 °C for 10 h. The synthesized carbon nanodots were subsequently immobilized onto functionalized microporous carbon nanospheres (MCNSs) with an average diameter of ∼100 nm and a surface area of 241 m2 g−1 via a simple hydrothermal process to self-assembly form a carbon-based nanocomposite (N-CNDs@MCNSs) owing to the presence of oxygen (O)-containing surface functional groups. As electrocatalyst for oxygen reduction reaction (ORR) application, our ...
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    In this work, nitrogen-doped carbon nanodots (N-CNDs) with sizes of 2–6 nm were successfully synthesized by hydrothermal treatment of natural biomass (e.g., fresh grass) at 180 °C for 10 h. The synthesized carbon nanodots were subsequently immobilized onto functionalized microporous carbon nanospheres (MCNSs) with an average diameter of ∼100 nm and a surface area of 241 m2 g−1 via a simple hydrothermal process to self-assembly form a carbon-based nanocomposite (N-CNDs@MCNSs) owing to the presence of oxygen (O)-containing surface functional groups. As electrocatalyst for oxygen reduction reaction (ORR) application, our experimental results demonstrated that sole N-CNDs could not form stable electrocatalyst film for ORR measurement owing to their high water dispersion property, while the N-CNDs@MCNSs exhibited high electrocatalytic activity with an onset potential of −0.08 V, superior durability and high resistance to methanol cross-over effect, comparable to commercially available Pt/C electrocatalyst.
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    Journal Title
    Electrochimica Acta
    Volume
    165
    DOI
    https://doi.org/10.1016/j.electacta.2015.02.240
    Copyright Statement
    © 2015 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Chemical Sciences not elsewhere classified
    Physical Sciences
    Chemical Sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/100744
    Collection
    • Journal articles

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