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One-pot synthesis of porous 1T-phase MoS2 integrated with single-atom Cu doping for enhancing electrocatalytic hydrogen evolution reaction

Journal Article


Abstract


  • Molybdenum sulfide (MoS 2 ) has attracted great interest as a promising non-precious-metal catalyst candidate to replace the precious-metal Pt catalysts for the hydrogen evolution reaction (HER). Nevertheless, the catalytic efficiency of MoS 2 is significantly restricted by its density of catalytic active sites and inert basal plane. In this work, we have designed a facile one-pot solvothermal method to synthesize porous 1T-MoS 2 that is integrated with atomic doping of Cu atoms. The as-prepared Cu@MoS 2 sample exhibits enhanced HER performance with a low overpotential of 131 mV at the current density of 10 mA/cm 2 , a small Tafel slope of 51 mV/dec and as well as a good long-term stability. Enhanced HER performance can be ascribed to the synergistic effect of 1T-MoS 2 metallic phase, single atom Cu doping and numerous sulfur vacancies. Theoretical calculations indicates that the adsorption energy of Cu atom on 1T-MoS 2 surface (−3.68 eV) is much higher than that on 2H-MoS 2 surface (−1.94 eV), moreover, the Cu atom adsorbed on the surface of the 1T-MoS 2 has larger charge transfer (−0.38e), which can be contributed to further enhance HER performance of 1T-MoS 2 .

Authors


  •   Ji, Liang (external author)
  •   Yan, Pengfei (external author)
  •   Zhu, Chuanhui (external author)
  •   Ma, Chunyan (external author)
  •   Wu, Wenzhuo (external author)
  •   Wei, Cong (external author)
  •   Shen, Yonglong (external author)
  •   Chu, Shengqi (external author)
  •   Wang, Jiaou (external author)
  •   Du, Yi
  •   Chen, Jun
  •   Yang, Xinan (external author)
  •   Xu, Qun (external author)

Publication Date


  • 2019

Citation


  • Ji, L., Yan, P., Zhu, C., Ma, C., Wu, W., Wei, C., Shen, Y., Chu, S., Wang, J., Du, Y., Chen, J., Yang, X. & Xu, Q. (2019). One-pot synthesis of porous 1T-phase MoS2 integrated with single-atom Cu doping for enhancing electrocatalytic hydrogen evolution reaction. Applied Catalysis B: Environmental, 251 87-93.

Scopus Eid


  • 2-s2.0-85063432523

Number Of Pages


  • 6

Start Page


  • 87

End Page


  • 93

Volume


  • 251

Place Of Publication


  • Netherlands

Abstract


  • Molybdenum sulfide (MoS 2 ) has attracted great interest as a promising non-precious-metal catalyst candidate to replace the precious-metal Pt catalysts for the hydrogen evolution reaction (HER). Nevertheless, the catalytic efficiency of MoS 2 is significantly restricted by its density of catalytic active sites and inert basal plane. In this work, we have designed a facile one-pot solvothermal method to synthesize porous 1T-MoS 2 that is integrated with atomic doping of Cu atoms. The as-prepared Cu@MoS 2 sample exhibits enhanced HER performance with a low overpotential of 131 mV at the current density of 10 mA/cm 2 , a small Tafel slope of 51 mV/dec and as well as a good long-term stability. Enhanced HER performance can be ascribed to the synergistic effect of 1T-MoS 2 metallic phase, single atom Cu doping and numerous sulfur vacancies. Theoretical calculations indicates that the adsorption energy of Cu atom on 1T-MoS 2 surface (−3.68 eV) is much higher than that on 2H-MoS 2 surface (−1.94 eV), moreover, the Cu atom adsorbed on the surface of the 1T-MoS 2 has larger charge transfer (−0.38e), which can be contributed to further enhance HER performance of 1T-MoS 2 .

Authors


  •   Ji, Liang (external author)
  •   Yan, Pengfei (external author)
  •   Zhu, Chuanhui (external author)
  •   Ma, Chunyan (external author)
  •   Wu, Wenzhuo (external author)
  •   Wei, Cong (external author)
  •   Shen, Yonglong (external author)
  •   Chu, Shengqi (external author)
  •   Wang, Jiaou (external author)
  •   Du, Yi
  •   Chen, Jun
  •   Yang, Xinan (external author)
  •   Xu, Qun (external author)

Publication Date


  • 2019

Citation


  • Ji, L., Yan, P., Zhu, C., Ma, C., Wu, W., Wei, C., Shen, Y., Chu, S., Wang, J., Du, Y., Chen, J., Yang, X. & Xu, Q. (2019). One-pot synthesis of porous 1T-phase MoS2 integrated with single-atom Cu doping for enhancing electrocatalytic hydrogen evolution reaction. Applied Catalysis B: Environmental, 251 87-93.

Scopus Eid


  • 2-s2.0-85063432523

Number Of Pages


  • 6

Start Page


  • 87

End Page


  • 93

Volume


  • 251

Place Of Publication


  • Netherlands