Volume 19, Issue 2 ((Iranian Journal of Physics Research,Summer 2019)                   IJPR 2019, 19(2): 365-377 | Back to browse issues page

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Zirak M, Alehdaghi H, Moshfegh A. Fabrication of single-layer MS2 (M=Mo, W) nanosheets using Li battery setup. IJPR. 2019; 19 (2) :365-377
URL: http://ijpr.iut.ac.ir/article-1-2589-en.html
Department of Physics, Sharif University of Technology, Tehran, Iran, Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran , moshfegh@sharif.edu
Abstract:   (484 Views)
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.
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Type of Study: Research | Subject: Nanomaterials

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