Skip to main content
placeholder image

Surface-Electron Coupling for Efficient Hydrogen Evolution

Journal Article


Abstract


  • Maximizing the activity of materials towards the alkaline hydrogen evolution reaction while maintaining their structural stability under realistic working conditions remains an area of active research. Herein, we report the first controllable surface modification of graphene(G)/V8C7 heterostructures by nitrogen. Because the introduced N atoms couple electronically with V atoms, the V sites can reduce the energy barrier for water adsorption and dissociation. Investigation of the multi-regional synergistic catalysis on N-modified G/V8C7 by experimental observations and density-functional-theory calculations reveals that the increase of electron density on the epitaxial graphene enable it to become favorable for H* adsorption and the subsequent reaction with another H2O molecule. This work extends the range of surface-engineering approaches to optimize the intrinsic properties of materials and could be generalized to the surface modification of other transition-metal carbides.

Authors


  •   Fu, Weiwei (external author)
  •   Wang, Yanwei (external author)
  •   Hu, Jisong (external author)
  •   Zhang, Huijuan (external author)
  •   Luo, Ping (external author)
  •   Sun, Fang (external author)
  •   Ma, Xinguo (external author)
  •   Huang, Zhengyong (external author)
  •   Li, Jian (external author)
  •   Guo, Zaiping
  •   Wang, Yu (external author)

Publication Date


  • 2019

Citation


  • Fu, W., Wang, Y., Hu, J., Zhang, H., Luo, P., Sun, F., Ma, X., Huang, Z., Li, J., Guo, Z. & Wang, Y. (2019). Surface-Electron Coupling for Efficient Hydrogen Evolution. Angewandte Chemie - International Edition, 58 17709-17717.

Scopus Eid


  • 2-s2.0-85074502103

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3883

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 17709

End Page


  • 17717

Volume


  • 58

Place Of Publication


  • Germany

Abstract


  • Maximizing the activity of materials towards the alkaline hydrogen evolution reaction while maintaining their structural stability under realistic working conditions remains an area of active research. Herein, we report the first controllable surface modification of graphene(G)/V8C7 heterostructures by nitrogen. Because the introduced N atoms couple electronically with V atoms, the V sites can reduce the energy barrier for water adsorption and dissociation. Investigation of the multi-regional synergistic catalysis on N-modified G/V8C7 by experimental observations and density-functional-theory calculations reveals that the increase of electron density on the epitaxial graphene enable it to become favorable for H* adsorption and the subsequent reaction with another H2O molecule. This work extends the range of surface-engineering approaches to optimize the intrinsic properties of materials and could be generalized to the surface modification of other transition-metal carbides.

Authors


  •   Fu, Weiwei (external author)
  •   Wang, Yanwei (external author)
  •   Hu, Jisong (external author)
  •   Zhang, Huijuan (external author)
  •   Luo, Ping (external author)
  •   Sun, Fang (external author)
  •   Ma, Xinguo (external author)
  •   Huang, Zhengyong (external author)
  •   Li, Jian (external author)
  •   Guo, Zaiping
  •   Wang, Yu (external author)

Publication Date


  • 2019

Citation


  • Fu, W., Wang, Y., Hu, J., Zhang, H., Luo, P., Sun, F., Ma, X., Huang, Z., Li, J., Guo, Z. & Wang, Y. (2019). Surface-Electron Coupling for Efficient Hydrogen Evolution. Angewandte Chemie - International Edition, 58 17709-17717.

Scopus Eid


  • 2-s2.0-85074502103

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3883

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 17709

End Page


  • 17717

Volume


  • 58

Place Of Publication


  • Germany