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Article Navigation >  Green Energy&Environment  > 2020  >  5(4): 444-452
Mingjie Zhang, Chen Han, Wenyao Chen, Wei Luo, Yueqiang Cao, Gang Qian, Xinggui Zhou, Xiaoguang Duan, Shaobin Wang, Xuezhi Duan. Active sites and reaction mechanism for N-doped carbocatalysis of phenol removal. Green Energy&Environment, 2020, 5(4): 444-452. doi: 10.1016/j.gee.2020.05.006
Citation: Mingjie Zhang, Chen Han, Wenyao Chen, Wei Luo, Yueqiang Cao, Gang Qian, Xinggui Zhou, Xiaoguang Duan, Shaobin Wang, Xuezhi Duan. Active sites and reaction mechanism for N-doped carbocatalysis of phenol removal. Green Energy&Environment, 2020, 5(4): 444-452. doi: 10.1016/j.gee.2020.05.006
shu

Active sites and reaction mechanism for N-doped carbocatalysis of phenol removal

doi: 10.1016/j.gee.2020.05.006
  • a.

    State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

  • b.

    WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia 6845, Australia

  • c.

    School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia

More Information
  • Corresponding author: E-mail address: xzduan@ecust.edu.cn (Xuezhi Duan)
  • Received date 18 February 2020, Accepted date 18 May 2020, RevRecd date 30 April 2020, Available online 24 May 2020, Publish date 31 October 2020,
    Abstract
  • Heteroatom-doping of carbocatalysts has been a powerful strategy to remarkably enhance the catalytic performance. Herein, the underlying nature of N promotional effects on peroxymonosulfate (PMS) activation for phenol removal is understood by combining kinetics analysis with multiple techniques. A strategy using mixed acid oxidation of carbon nanotube (CNT) followed by NH3 treatment is employed to yield a series of catalysts with different N-doping contents but similar fraction of sp2-hybridized carbon and defective degree, endowing with a chance to discriminate the dominant N-containing active sites. The multi-sites kinetics analysis suggests the graphitic N-containing sites as the dominant active sites. The mechanism of the surface-bound reactive species is also discriminated as the dominant reaction mechanism. The insights reported here could provide the methodology to fundamentally understand the heteroatom-doping effects of carbocatalysis.

     

    • These authors contributed equally to this work.
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