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^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

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

Keywords

2D materials
Inorganic nanotubes
Interfaces
Surface treatment
WS

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10.1016/j.cplett.2020.138052

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title = "Chemical control of the surface of WS2 nanoparticles",

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.",

keywords = "2D materials, Inorganic nanotubes, Interfaces, Surface treatment, WS",

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AU - Shalom, H.

AU - Bendikov, T.

AU - Feldman, Y.

AU - Lachman, N.

AU - Zak, A.

AU - Tenne, R.

PY - 2020/12/16

Y1 - 2020/12/16

N2 - 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.

AB - 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.

KW - 2D materials

KW - Inorganic nanotubes

KW - Interfaces

KW - Surface treatment

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Chemical control of the surface of WS₂ nanoparticles

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Keywords

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