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Carbon nanotube-induced phase and stability engineering: A strained cobalt-doped WSe2/MWNT heterostructure for enhanced hydrogen evolution reaction

Journal Article


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Abstract


  • Efficient evolution of hydrogen with inexpensive, highly active and long-term stable catalysts in a wide pH range holds tremendous promise for clean energy. Here, we report the synthesis of a cobalt-doped tungsten selenide/multiwalled carbon nanotube (Co-WSe 2 /MWNT) heterostructure for the first time, wherein the MWNTs act as an efficient topological template for the nucleation and growth of curved Co-WSe 2 nanosheets with abundant accessible active sites. Furthermore, we demonstrate that the MWNT induced curvature strain not only promotes the predominant 1T phase of active Co-WSe 2 , but also enhances its anti-oxidative stability. Further study indicates that the as-prepared catalyst exhibits efficient electrocatalytic HER in both acidic and alkaline environments with high activity and long-term stability.

Authors


  •   Zhang, Guoyuan (external author)
  •   Zheng, Xiaoli (external author)
  •   Xu, Qun (external author)
  •   Zhang, Jianan (external author)
  •   Liu, Wei (external author)
  •   Chen, Jun

Publication Date


  • 2018

Citation


  • Zhang, G., Zheng, X., Xu, Q., Zhang, J., Liu, W. & Chen, J. (2018). Carbon nanotube-induced phase and stability engineering: A strained cobalt-doped WSe2/MWNT heterostructure for enhanced hydrogen evolution reaction. Journal of Materials Chemistry A, 6 (11), 4793-4800.

Scopus Eid


  • 2-s2.0-85043772555

Ro Full-text Url


  • https://ro.uow.edu.au/context/aiimpapers/article/4059/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3009

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 4793

End Page


  • 4800

Volume


  • 6

Issue


  • 11

Place Of Publication


  • United Kingdom

Abstract


  • Efficient evolution of hydrogen with inexpensive, highly active and long-term stable catalysts in a wide pH range holds tremendous promise for clean energy. Here, we report the synthesis of a cobalt-doped tungsten selenide/multiwalled carbon nanotube (Co-WSe 2 /MWNT) heterostructure for the first time, wherein the MWNTs act as an efficient topological template for the nucleation and growth of curved Co-WSe 2 nanosheets with abundant accessible active sites. Furthermore, we demonstrate that the MWNT induced curvature strain not only promotes the predominant 1T phase of active Co-WSe 2 , but also enhances its anti-oxidative stability. Further study indicates that the as-prepared catalyst exhibits efficient electrocatalytic HER in both acidic and alkaline environments with high activity and long-term stability.

Authors


  •   Zhang, Guoyuan (external author)
  •   Zheng, Xiaoli (external author)
  •   Xu, Qun (external author)
  •   Zhang, Jianan (external author)
  •   Liu, Wei (external author)
  •   Chen, Jun

Publication Date


  • 2018

Citation


  • Zhang, G., Zheng, X., Xu, Q., Zhang, J., Liu, W. & Chen, J. (2018). Carbon nanotube-induced phase and stability engineering: A strained cobalt-doped WSe2/MWNT heterostructure for enhanced hydrogen evolution reaction. Journal of Materials Chemistry A, 6 (11), 4793-4800.

Scopus Eid


  • 2-s2.0-85043772555

Ro Full-text Url


  • https://ro.uow.edu.au/context/aiimpapers/article/4059/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3009

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 4793

End Page


  • 4800

Volume


  • 6

Issue


  • 11

Place Of Publication


  • United Kingdom