Chemical control of the surface of WS2 nanoparticles

H. Shalom; T. Bendikov; Y. Feldman; N. Lachman; A. Zak; R. Tenne

doi:10.1016/j.cplett.2020.138052

Chemical control of the surface of WS₂ nanoparticles

H. Shalom, T. Bendikov, Y. Feldman, N. Lachman, A. Zak, R. Tenne

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Tungsten disulfide is an inorganic compound with layer structure. Nanoparticles of WS₂ were found to be excellent candidates for reinforcing various polymer materials. However, long storage times in ambient conditions lead to sorption of water molecules and slow oxidation of defect sites. In the present study, the influence of various treatments on the surface composition and reactivity of several kinds of WS₂ nanoparticles, were investigated. This study reveals some complex interplay between water and organic moieties desorption and the subsequent oxidation of “nascant” surfaces. Remarkably, simple immersion in HF solution seems to produce the ultimately cleanest surface of these particles.

Original language	English
Article number	138052
Journal	Chemical Physics Letters
Volume	761
DOIs	https://doi.org/10.1016/j.cplett.2020.138052
State	Published - 16 Dec 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Funding

We wish to thank Dr. S. S. Sinha for the help with the artwork and Dr. M.B. Sreedhara for the TEM analysis. This work was supported by the joint Innovation Authority of Israel and the Fraunhofer (Germany) research program, Grant No. 712995; Irving and Cherna Moskowitz Center for Nano and Bio-Nano Imaging; the Perlman Family Foundation ; the Kimmel Center for Nanoscale Science (Grant No. 43535000350000 ), the G.M.J. Schmidt Minerva Centre of Supramolecular Architectures at the Weizmann Institute (434000). A.Z. acknowledges the support of the joint Ariel University- HIT research grant (RA 1900000523) and the Israel Science Foundation grant No. 330/16.

Funders	Funder number
Bio-Nano Imaging
Kimmel Center for Nanoscale Science	43535000350000
Weizmann Institute	434000
Perlman Family Foundation
Israel Science Foundation	330/16
Ariel University	RA 1900000523
joint Innovation Authority of Israel and the Fraunhofer	712995

Keywords

2D materials
Inorganic nanotubes
Interfaces
Surface treatment
WS

Access to Document

10.1016/j.cplett.2020.138052

Cite this

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