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Colloids and Interface Science Communications, volume 47, pages 100604

A new 2-methylimidazole-assisted liquid-exfoliation method for a rapid scalable fabrication of chemically pure MoS2 nanosheets

Publication typeJournal Article
Publication date2022-03-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.5
ISSN22150382
Materials Chemistry
Surfaces, Coatings and Films
Physical and Theoretical Chemistry
Colloid and Surface Chemistry
Biotechnology
Abstract
A new liquid exfoliation method of pristine MoS 2 in a hot solution of 2-methylimidazole for a rapid fabrication of 1–2 nm-thick MoS 2 nanoflakes is developed. The method makes it possible to produce large amounts of stable MoS 2 hydrosols with concentrations 0.21–0.53 mg/ml within 2–4 h. Energy-dispersive X-ray spectroscopies and thermogravimetric analysis confirmed chemical purity of MoS 2 after the removal of 2-methylimidazole with water. The as-formed MoS 2 nanoflakes have a relatively narrow size distribution (50 ± 25 nm) and exhibit a strong aggregation-dependent luminescence at 420–475 nm. The thin films obtained from the MoS 2 nanoflakes by spin-coating possess good semiconductor properties showing a non-ohmic linear current-voltage dependence and a surface resistivity up to 7.9 × 10– 2 Ω·сm. The reported method may provide an affordable, experimentally simple and ecology-friendly alternative to commonly used techniques for fabricating MoS 2 nanosheets with a potentially useful combination of size and properties for further applications in hybrid and composite materials. • 2-methylimidazole rapidly exfoliates MoS 2 into 50-nm-nanoflakes. • Method provides control over purity, size and thickness of MoS 2 nanoflakes. • Intercalating compound can be saved and reused for next cycles of exfoliation. • MoS 2 nanoflakes show aggregation-dependent luminescence at 430–480 nm. • Spin-coated films of MoS 2 nanoflakes possess surface conductivity 4 S*cm −1 .

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Sokolov M. et al. A new 2-methylimidazole-assisted liquid-exfoliation method for a rapid scalable fabrication of chemically pure MoS2 nanosheets // Colloids and Interface Science Communications. 2022. Vol. 47. p. 100604.
GOST all authors (up to 50) Copy
Sokolov M., Tumbinskiy K. A., Zvyagina A. I., Senchikhin I. N., Averin A. A., Aleksandrov A., Tameev A., Ежов А. А., Kalinina M. A. A new 2-methylimidazole-assisted liquid-exfoliation method for a rapid scalable fabrication of chemically pure MoS2 nanosheets // Colloids and Interface Science Communications. 2022. Vol. 47. p. 100604.
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RIS Copy
TY - JOUR
DO - 10.1016/j.colcom.2022.100604
UR - https://doi.org/10.1016%2Fj.colcom.2022.100604
TI - A new 2-methylimidazole-assisted liquid-exfoliation method for a rapid scalable fabrication of chemically pure MoS2 nanosheets
T2 - Colloids and Interface Science Communications
AU - Sokolov, Maxim
AU - Tumbinskiy, Konstantin A
AU - Zvyagina, Alexandra I
AU - Senchikhin, Ivan N
AU - Averin, Alexey A
AU - Aleksandrov, Alexey
AU - Tameev, Alexey
AU - Ежов, А. А.
AU - Kalinina, Maria A
PY - 2022
DA - 2022/03/01 00:00:00
PB - Elsevier
SP - 100604
VL - 47
SN - 2215-0382
ER -
BibTex
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BibTex Copy
@article{2022_Sokolov
author = {Maxim Sokolov and Konstantin A Tumbinskiy and Alexandra I Zvyagina and Ivan N Senchikhin and Alexey A Averin and Alexey Aleksandrov and Alexey Tameev and А. А. Ежов and Maria A Kalinina},
title = {A new 2-methylimidazole-assisted liquid-exfoliation method for a rapid scalable fabrication of chemically pure MoS2 nanosheets},
journal = {Colloids and Interface Science Communications},
year = {2022},
volume = {47},
publisher = {Elsevier},
month = {mar},
url = {https://doi.org/10.1016%2Fj.colcom.2022.100604},
pages = {100604},
doi = {10.1016/j.colcom.2022.100604}
}
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