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- W2335353545 abstract "Bismuth telluride (Bi2Te3) is a well-known thermoelectric material that has a layered crystal structure. Exfoliating Bi2Te3 to produce two-dimensional (2D) nanosheets is extremely important because the exfoliated nanosheets possess unique properties, which can potentially revolutionize several material technologies such as thermoelectrics, heterogeneous catalysts, and infrared detectors. In this work, ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) is used to exfoliate Bi2Te3 nanoplatelets. In both experiments and in molecular dynamics (MD) simulations, the Bi2Te3 nanoplatelets yield a stable dispersion of 2D nanosheets in the IL solvent, and our MD simulations provide molecular-level insight into the kinetics and thermodynamics of the exfoliation process. An analysis of the dynamics of Bi2Te3 during exfoliation indicates that the relative translation (sliding apart) of adjacent layers caused by IL-induced forces plays an important role in the process. Moreover, an evaluation of the MD trajectories and electrostatic interactions indicates that the [C4mim]+ cation is primarily responsible for initiating Bi2Te3 layer sliding and separation, while the Cl– anion is less active. Overall, our combined experimental and computational investigation highlights the effectiveness of IL-assisted exfoliation, and the underlying molecular-level insights should accelerate the development of future exfoliation techniques for producing 2D chalcogenide materials." @default.
- W2335353545 created "2016-06-24" @default.
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- W2335353545 date "2015-03-17" @default.
- W2335353545 modified "2023-10-10" @default.
- W2335353545 title "Mechanism of Bismuth Telluride Exfoliation in an Ionic Liquid Solvent" @default.
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- W2335353545 doi "https://doi.org/10.1021/acs.langmuir.5b00239" @default.
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- W2335353545 hasPublicationYear "2015" @default.
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