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Fabrication of single-layer MS2 (M=MO, W) nanosheets using Li battery setup

Zirak, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. Publisher: Isfahan University of Technology , 2019
  3. Abstract:
  4. Lithium intercalation is a convenient method to prepare few-layer and single-layer MS2 (M=Mo, W) nanosheets. This method is, however, very time-consuming (few days) and it is difficult to control the reaction parameters. To overcome these drawbacks, we have proposed a method to use an Li battery set-up to significantly reduce the reaction time (few hours) and electrochemically intercalate lithium ions into MS2 layers in a controllable manner. Atomic force microscopy (AFM), scanning electron microscopy (SEM) and Raman spectroscopy results revealed that MoS2 and WS2 single-layer (thickness of ~ 1 nm) nanosheets with the 1T phase were prepared after intercalation in an Li battery set-up. Lateral dimensions of MoS2 and WS2 nanosheets were determined to be at about ~ 170 ± 15 and 200 ± 30 nm, respectively. The concentrations of the final solutions containing MoS2 and WS2 nanosheets were measured to be 0.012 and 0.008 mg/mL, respectively. Successful fabrication of the single-layer MS2 nanosheets using the Li battery set-up could provide an excellent opportunity to investigate the unique properties of these two-dimensional crystals for various important applications such as catalysis, solar cells, optoelectronic, etc. © 2019, Isfahan University of Technology. All rights reserved
  5. Keywords:
  6. Electrochemical intercalation ; Li battery setup ; MoS2 ; Single-layer ; WS2
  7. Source: Iranian Journal of Physics Research ; Volume 19, Issue 2 , 2019 , Pages 365-377 ; 16826957 (ISSN)
  8. URL: https://ijpr.iut.ac.ir/article_1446.html?lang=en