Facile fabrication of ultrafine Pt nanoparticles supported on 3D macro-/oversized mesoporous N-doped carbon for efficient methanol oxidation

Limited by unsatisfactory mass diffusion and complex fabrication procedures, nanoporous carbons (NPCs) don't perform well, served as catalyst supports. Herein, utilizing nitrogen-doped carbon nanotubes (NCNTs) as spacers of nitrogen-doped graphene-like carbon nanosheets (NGs), a 3D nanoarchitec...

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Bibliographic Details
Published in:International journal of hydrogen energy 2019-11, Vol.44 (57), p.30388-30400
Main Authors: Ding, Junjie, Ma, Li, Gan, Mengyu, Zhan, Wang, Zhou, Chenglong, Wei, Deying, Han, Sichen, Shen, Jun, Xie, Fei, Zhong, Xiujuan
Format: Article
Language:English
Subjects:
3D macro-/oversized mesoporous
Charge transfer resistance
Methanol oxidation
Nanoporous carbons
Nitrogen doping
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Summary:Limited by unsatisfactory mass diffusion and complex fabrication procedures, nanoporous carbons (NPCs) don't perform well, served as catalyst supports. Herein, utilizing nitrogen-doped carbon nanotubes (NCNTs) as spacers of nitrogen-doped graphene-like carbon nanosheets (NGs), a 3D nanoarchitecture (Co@NCNT-NG-900) is fabricated via a facile and eco-friendly approach. Physical characterizations manifest that the in situ-formed NCNTs make for improving graphitic degree, NGs contribute to increasing the specific surface area and the level of N-doping, meanwhile, the spacers effects of NCNTs promote the formation of opened macropores, what's more, Co@NCNT-NG-900 mainly consists of three-dimensional macropores and oversized mesoporous (3D macro-/oversized mesoporous), unlike conventional NPCs. Benefiting from improved charge transfer rate, enhanced N-doping level and dominant 3D macro-/oversized mesoporous, Co@NCNT-NG-900 is evaluated as an ideal Pt support for methanol oxidation reaction (MOR) in acid and alkaline medium. This work provides a facile synthetic method for NPCs and sheds directive light into the research of efficient catalysts for MOR. [Display omitted] •A 3D nanoporous carbon is fabricated via a facile and eco-friendly approach.•Co@NCNT-NG-900 that we synthesized mainly consists of 3D macro-/oversized mesoporous.•Charge transfer resistance, large specific surface area, abundant N-doping level.•Excellent activity, long-term stability and outstanding anti-CO poisoning for MOR.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2019.09.182