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    From waste Coca Cola® to activated carbons with impressive capabilities for CO2 adsorption and supercapacitors

    Access Status
    Fulltext not available
    Authors
    Boyjoo, Y.
    Cheng, Y.
    Zhong, H.
    Tian, H.
    Pan, J.
    Pareek, Vishnu
    Jiang, S.
    Lamonier, J.
    Jaroniec, M.
    Liu, J.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Boyjoo, Y. and Cheng, Y. and Zhong, H. and Tian, H. and Pan, J. and Pareek, V. and Jiang, S. et al. 2017. From waste Coca Cola® to activated carbons with impressive capabilities for CO2 adsorption and supercapacitors Carbon. 116: pp. 490-499.
    Source Title
    Carbon
    DOI
    10.1016/j.carbon.2017.02.030
    ISSN
    0008-6223
    School
    School of Chemical and Petroleum Engineering
    URI
    http://hdl.handle.net/20.500.11937/50775
    Collection
    • Curtin Research Publications
    Abstract

    We herein report the synthesis of heteroatoms doped, high surface area microporous activated carbons (AC) by utilisation of Coca Cola® as a potential source of waste biomass, for applications as CO2 adsorbent and electrodes of supercapacitors. N, S dual doped carbon spheres are firstly obtained by hydrothermal treatment of Coca Cola® and then thermally activated by either KOH or ZnCl2. The resulting KOH activated carbon material (CMC-3) exhibits extremely high adsorption capability for CO2 with 5.22 mmol g-1 at 25 °C and 1 atm, one of the highest values ever recorded for a carbonaceous material. On the other hand, ZnCl2 activated carbon material (CMC-2) performs excellently as an electrode for supercapacitor, exhibiting very high specific capacitance of 352.7 F g-1 at a current density of 1 A g-1 in 6 M KOH electrolyte, which again is one of the highest values recorded for a biomass derived AC. Coca Cola® has high content in carbon as sugars, provides in-situ doping of O, N and S and has constant composition, as opposed to other conventional biomass materials, making it an attractive and cheap alternative for synthesis of high performance AC for environmental and energy storage purposes.

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