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In-situ grafting of N-doped carbon nanotubes with Ni encapsulation onto MOF-derived hierarchical hybrids for efficient electrocatalytic hydrogen evolution

Journal Article


Abstract


  • Developing highly efficient and cost-effective catalysts for the hydrogen evolution reaction (HER) is of paramount importance to solve the problems arising from the depletion of non-renewable fossil fuels and increasing air pollution issues. Herein, an in-situ heterogeneous catalytic synthesis approach is developed for constructing hierarchical Ni/carbon hybrids via grafting nitrogen-doped-carbon (NC) nanotubes with Ni encapsulation onto the metal-organic framework (MOF)-derived carbon matrix. Following the “nanotube tip-growth model” involved in the in-situ catalytic synthesis process, the morphology and size of the nanotubes and encapsulated particles of the as-prepared hierarchical Ni-based carbon hybrids can be controlled by regulating the conditions during the thermal decomposition of the Ni-MOF in the presence of melamine. The grafting and decoration of the Ni-encapsulated carbon nanotubes on the MOF-derived architecture rapidly enhance the HER electrocatalytic performance of the bare thermally decomposed Ni/N-doped carbon composite. Due to the synergistic effects of the stable metallic Ni active sites and the N-doped carbon support, the optimized Ni@NC6-600 sample exhibits stable and high catalytic activity, only requiring an overpotential of 181 mV to drive 10 mA/cm2 towards the HER in alkaline media.

UOW Authors


  •   Cheng, Ningyan (external author)
  •   Liu, Nana (external author)
  •   Liu, Yani (external author)
  •   Casillas, Gilberto (external author)
  •   Dou, Shi
  •   Du, Yi
  •   Ren, Long (external author)
  •   Wang, Nana
  •   Xu, Xun

Publication Date


  • 2020

Published In


Citation


  • Cheng, N., Wang, N., Ren, L., Casillas-Garcia, G., Liu, N., Liu, Y., . . . Du, Y. (2020). In-situ grafting of N-doped carbon nanotubes with Ni encapsulation onto MOF-derived hierarchical hybrids for efficient electrocatalytic hydrogen evolution. Carbon, 163, 178-185. doi:10.1016/j.carbon.2020.03.017

Scopus Eid


  • 2-s2.0-85081157012

Start Page


  • 178

End Page


  • 185

Volume


  • 163

Abstract


  • Developing highly efficient and cost-effective catalysts for the hydrogen evolution reaction (HER) is of paramount importance to solve the problems arising from the depletion of non-renewable fossil fuels and increasing air pollution issues. Herein, an in-situ heterogeneous catalytic synthesis approach is developed for constructing hierarchical Ni/carbon hybrids via grafting nitrogen-doped-carbon (NC) nanotubes with Ni encapsulation onto the metal-organic framework (MOF)-derived carbon matrix. Following the “nanotube tip-growth model” involved in the in-situ catalytic synthesis process, the morphology and size of the nanotubes and encapsulated particles of the as-prepared hierarchical Ni-based carbon hybrids can be controlled by regulating the conditions during the thermal decomposition of the Ni-MOF in the presence of melamine. The grafting and decoration of the Ni-encapsulated carbon nanotubes on the MOF-derived architecture rapidly enhance the HER electrocatalytic performance of the bare thermally decomposed Ni/N-doped carbon composite. Due to the synergistic effects of the stable metallic Ni active sites and the N-doped carbon support, the optimized Ni@NC6-600 sample exhibits stable and high catalytic activity, only requiring an overpotential of 181 mV to drive 10 mA/cm2 towards the HER in alkaline media.

UOW Authors


  •   Cheng, Ningyan (external author)
  •   Liu, Nana (external author)
  •   Liu, Yani (external author)
  •   Casillas, Gilberto (external author)
  •   Dou, Shi
  •   Du, Yi
  •   Ren, Long (external author)
  •   Wang, Nana
  •   Xu, Xun

Publication Date


  • 2020

Published In


Citation


  • Cheng, N., Wang, N., Ren, L., Casillas-Garcia, G., Liu, N., Liu, Y., . . . Du, Y. (2020). In-situ grafting of N-doped carbon nanotubes with Ni encapsulation onto MOF-derived hierarchical hybrids for efficient electrocatalytic hydrogen evolution. Carbon, 163, 178-185. doi:10.1016/j.carbon.2020.03.017

Scopus Eid


  • 2-s2.0-85081157012

Start Page


  • 178

End Page


  • 185

Volume


  • 163