Mesoporous Iron-doped MoS2/CoMo2S4 Heterostructures through Organic-Metal Cooperative Interactions on Spherical Micelles for Electrochemical Water Splitting

Yanna Guo, Jing Tang, Joel Henzie, Bo Jiang, Wei Xia, Tao Chen, Yoshio Bando, Yong Mook Kang, Md Shahriar A. Hossain, Yoshiyuki Sugahara, Yusuke Yamauchi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Mesoporous metal sulfide hybrid (meso-MoS2/CoMo2S4) materials via a soft-templating approach using diblock copolymer polystyrene-block-poly(acrylic acid) micelles are reported. The formation of the meso-MoS2/CoMo2S4 heterostructures is based on the sophisticated coassembly of dithiooxamide and metal precursors (i.e., Co2+, PMo12), which are subsequently annealed in nitrogen atmosphere to generate the mesoporous material. Decomposing the polymer leaves behind mesopores throughout the spherical MoS2/CoMo2S4 hybrid particles, generating numerous electrochemical active sites in a network of pores that enable faster charge transfer and mass/gas diffusion that enhance the electrocatalytic performance of MoS2/CoMo2S4. Doping the spherical meso-MoS2/CoMo2S4 heterostructures with iron improves the electronic properties of the hybrid meso-Fe-MoS2/CoMo2S4 material and consequently results in its superior electrochemical activities for both hydrogen evolution reaction and oxygen evolution reaction.

Original languageEnglish
Pages (from-to)4141-4152
Number of pages12
JournalACS Nano
Volume14
Issue number4
DOIs
Publication statusPublished - 2020 Apr 28

Keywords

  • cooperative interactions
  • electrochemical water splitting
  • Fe-doping
  • mesoporous
  • MoS2/CoMo2S4

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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