Facile solvent-thermal synthesis of ultrathin MoSe 2 nanosheets for hydrogen evolution and organic dyes adsorption

Qingqing Jiang, Yongfeng Lu, Zhengxi Huang, Juncheng Hu

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

The flower-like MoSe 2 nanospheres with average size of 200 nm which composed of ultrathin nanosheets were synthesized by facile solvent-thermal method. AFM analysis indicated that the thickness of the MoSe 2 nanosheets could be changed from 3.4 to 6.4 nm by changing the chains of n-alcohol solvent. The as prepared MoSe 2 nanosheets in ethanol solvent exhibited the best electrochemical performance and the highest adsorption capability as compared to samples synthesized in other n-alcohol solvent with longer chains. It was due to MoSe 2 synthesized in ethanol exhibited higher crystallinity and better wettability than other samples. The maximum adsorption capability of Rhodamine B (RhB) on MoSe 2 nanosheets reached 133 mg g −1 in 5 min, while the same adsorption capabilities on activated carbon need 20 min. Electrochemical results exhibited a relatively small onset potential (120 mV), small Tafel slope (71 mV/dec), and long term stability for MoSe 2 synthesized in ethanol which making it a promising candidate for hydrogen evolution reaction.

Original languageEnglish (US)
Pages (from-to)277-285
Number of pages9
JournalApplied Surface Science
Volume402
DOIs
StatePublished - Apr 30 2017

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Keywords

  • HER
  • MoSe
  • Nanosheet
  • Organic dyes adsorption

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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