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Improved nitrogen reduction electroactivity by unique MoS2-SnS2 heterogeneous nanoplates supported on poly(zwitterionic liquids) functionalized polypyrrole/graphene oxide

Journal Article


Abstract


  • Unique MoS2-SnS2 heterogeneous nanoplates have successfully in-situ grown on poly(3-(1-vinylimidazolium-3-yl)propane-1-sulfonate) functionalized polypyrrole/ graphene oxide (PVIPS/PPy/GO). PVIPS can attract heptamolybdate ion (Mo7O246−) and Sn4+ as the precursors by the ion-exchange, resulting in the simultaneous growth of 1T’-MoS2 and the berndtite-2T-type hexagonal SnS2 by the interfacial induced effect of PVIPS. The obtained MoS2-SnS2/ PVIPS/PPy/GO can serve as electrocatalysts, exhibiting good NRR performance by the synergistic effect. The semi-conducting SnS2 would limit the surface electron accessibility for suppressing HER process of 1T’-MoS2, while metallic 1T’-MoS2 might efficiently improve the NRR electroactivity of SnS2 by the creation of Mo-Sn-Sn trimer catalytic sites. Otherwise, the irreversible crystal phase transition has taken place during the NRR process. Partial 1T’-MoS2 and SnS2 have electrochemically reacted with N2, and irreversibly converted into Mo2N and SnxNz due to the formation of Mo−N and Sn−N bonding, meanwhile, partial SnS2 has been irreversibly evolved into SnS due to the reduction by the power source in the electrochemical system. It would put forward a new design idea for optimizing the preparation method and electrocatalytic activity of transition metal dichalcogenides.

Publication Date


  • 2022

Citation


  • Mao, H., Yang, H., Liu, J., Zhang, S., Liu, D., Wu, Q., . . . Ma, T. (2022). Improved nitrogen reduction electroactivity by unique MoS2-SnS2 heterogeneous nanoplates supported on poly(zwitterionic liquids) functionalized polypyrrole/graphene oxide. Chinese Journal of Catalysis, 43(5), 1341-1350. doi:10.1016/S1872-2067(21)63944-X

Scopus Eid


  • 2-s2.0-85127082419

Web Of Science Accession Number


Start Page


  • 1341

End Page


  • 1350

Volume


  • 43

Issue


  • 5

Abstract


  • Unique MoS2-SnS2 heterogeneous nanoplates have successfully in-situ grown on poly(3-(1-vinylimidazolium-3-yl)propane-1-sulfonate) functionalized polypyrrole/ graphene oxide (PVIPS/PPy/GO). PVIPS can attract heptamolybdate ion (Mo7O246−) and Sn4+ as the precursors by the ion-exchange, resulting in the simultaneous growth of 1T’-MoS2 and the berndtite-2T-type hexagonal SnS2 by the interfacial induced effect of PVIPS. The obtained MoS2-SnS2/ PVIPS/PPy/GO can serve as electrocatalysts, exhibiting good NRR performance by the synergistic effect. The semi-conducting SnS2 would limit the surface electron accessibility for suppressing HER process of 1T’-MoS2, while metallic 1T’-MoS2 might efficiently improve the NRR electroactivity of SnS2 by the creation of Mo-Sn-Sn trimer catalytic sites. Otherwise, the irreversible crystal phase transition has taken place during the NRR process. Partial 1T’-MoS2 and SnS2 have electrochemically reacted with N2, and irreversibly converted into Mo2N and SnxNz due to the formation of Mo−N and Sn−N bonding, meanwhile, partial SnS2 has been irreversibly evolved into SnS due to the reduction by the power source in the electrochemical system. It would put forward a new design idea for optimizing the preparation method and electrocatalytic activity of transition metal dichalcogenides.

Publication Date


  • 2022

Citation


  • Mao, H., Yang, H., Liu, J., Zhang, S., Liu, D., Wu, Q., . . . Ma, T. (2022). Improved nitrogen reduction electroactivity by unique MoS2-SnS2 heterogeneous nanoplates supported on poly(zwitterionic liquids) functionalized polypyrrole/graphene oxide. Chinese Journal of Catalysis, 43(5), 1341-1350. doi:10.1016/S1872-2067(21)63944-X

Scopus Eid


  • 2-s2.0-85127082419

Web Of Science Accession Number


Start Page


  • 1341

End Page


  • 1350

Volume


  • 43

Issue


  • 5