Doping of Fullerene-Like MoS2 Nanoparticles with Minute Amounts of Niobium

Rita Rosentsveig; Lena Yadgarov; Yishay (Isai) Feldman; Sana Shilstein; Ronit Popovitz-Biro; Bojana Visic; Anastasiya Sedova; Sidney R. Cohen; Yuanyuan Li; Anatoly I. Frenkel; Reshef Tenne

doi:10.1002/ppsc.201700165

Doping of Fullerene-Like MoS₂ Nanoparticles with Minute Amounts of Niobium

Rita Rosentsveig, Lena Yadgarov, Yishay (Isai) Feldman, Sana Shilstein, Ronit Popovitz-Biro, Bojana Visic, Anastasiya Sedova, Sidney R. Cohen, Yuanyuan Li, Anatoly I. Frenkel, Reshef Tenne

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

2 Scopus citations

Abstract

Inorganic fullerene-like closed-cage nanoparticles of MoS₂ and WS₂ (IF-MoS₂; IF-WS₂), are synthesized in substantial amounts and their properties are widely studied. Their superior tribological properties led to large scale commercial applications as solid lubricants in numerous products and technologies. Doping of these nanoparticles can be used to tune their physical properties. In the current work, niobium (Nb) doping of the nanoparticles is accomplished to an unprecedented low level (≤0.1 at%), which allows controlling the work function and the band gap. The Nb contributes a positive charge, which partially compensates the negative surface charge induced by the intrinsic defects (sulfur vacancies). The energy diagram and position of the Fermi level on the nanoparticles surface is determined by Kelvin probe microscopy and optical measurements. Some potential applications of these nanoparticles are briefly discussed.

Original language	English
Article number	1700165
Journal	Particle and Particle Systems Characterization
Volume	35
Issue number	3
DOIs	https://doi.org/10.1002/ppsc.201700165
State	Published - Mar 2018
Externally published	Yes

Funding

The authors thank Bat-El Raphael for her help with the Kelvin probe measurements. The authors acknowledge support from the FTA action “Inorganic nanotube-polymer composites” No. 711543 of the Israel National Nano Initiative, the Irving and Cherna Moskowitz Center for Nano and Bio-Nano Imaging grant No. 7208214, and the Perlman Family Foundation; the Israel Science Foundation grants No. 265/12, the Kimmel Center for Nanoscale Science grant No. 43535000350000, the German-Israeli Foundation (GIF) grant No. 712053, the Irving and Azelle Waltcher Foundations in honor of Prof. M. Levy grant No. 720821, the EU project ITN- “MoWSeS” grant No. 317451, the G. M. J. Schmidt Minerva Center for Supramolecular Chemistry grant No. 434000340000. The work of A.I.F. was funded by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy through Grant DE-FG02- 03ER15476. Work at the X18-A beamline was supported through the Synchrotron Catalysis Consortium (U.S. Department of Energy, Office of Basic Energy Sciences, Grant No. DE-SC0012335. The authors thank Bat-El Raphael for her help with the Kelvin probe measurements. The authors acknowledge support from the FTA action “Inorganic nanotube-polymer composites” No. 711543 of the Israel National Nano Initiative, the Irving and Cherna Moskowitz Center for Nano and Bio-Nano Imaging grant No. 7208214, and the Perlman Family Foundation; the Israel Science Foundation grants No. 265/12, the Kimmel Center for Nanoscale Science grant No. 43535000350000, the German-Israeli Foundation (GIF) grant No. 712053, the Irving and Azelle Waltcher Foundations in honor of Prof. M. Levy grant No. 720821, the EU project ITN-“MoWSeS” grant No. 317451, the G. M. J. Schmidt Minerva Center for Supramolecular Chemistry grant No. 434000340000. The work of A.I.F. was funded by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy through Grant DE-FG02-03ER15476. Work at the X18-A beamline was supported through the Synchrotron Catalysis Consortium (U.S. Department of Energy, Office of Basic Energy Sciences, Grant No. DE-SC0012335.

Funders	Funder number
FTA action	711543
Israel National Nano Initiative
Office of Basic Energy Sciences
Synchrotron Catalysis Consortium
U.S. Department of Energy	DE-SC0012335, DE-FG02-03ER15476, 03ER15476
Center for Nanoscale Science and Technology	43535000350000
Chemical Sciences, Geosciences, and Biosciences Division
Perlman Family Foundation
European Commission	317451, 434000340000
German-Israeli Foundation for Scientific Research and Development	712053, 720821
Israel Science Foundation	265/12
Irving and Cherna Moskowitz Center for Nano and Bio-nano Imaging, Weizmann Institute of Science	7208214

Keywords

doping
fullerene-like
inorganic nanotubes
nanoparticles

Access to Document

10.1002/ppsc.201700165

Cite this

@article{55a5e5628a3b45478474159881c6eee8,

title = "Doping of Fullerene-Like MoS2 Nanoparticles with Minute Amounts of Niobium",

abstract = "Inorganic fullerene-like closed-cage nanoparticles of MoS2 and WS2 (IF-MoS2; IF-WS2), are synthesized in substantial amounts and their properties are widely studied. Their superior tribological properties led to large scale commercial applications as solid lubricants in numerous products and technologies. Doping of these nanoparticles can be used to tune their physical properties. In the current work, niobium (Nb) doping of the nanoparticles is accomplished to an unprecedented low level (≤0.1 at%), which allows controlling the work function and the band gap. The Nb contributes a positive charge, which partially compensates the negative surface charge induced by the intrinsic defects (sulfur vacancies). The energy diagram and position of the Fermi level on the nanoparticles surface is determined by Kelvin probe microscopy and optical measurements. Some potential applications of these nanoparticles are briefly discussed.",

keywords = "doping, fullerene-like, inorganic nanotubes, nanoparticles",

author = "Rita Rosentsveig and Lena Yadgarov and {(Isai) Feldman}, Yishay and Sana Shilstein and Ronit Popovitz-Biro and Bojana Visic and Anastasiya Sedova and Cohen, {Sidney R.} and Yuanyuan Li and Frenkel, {Anatoly I.} and Reshef Tenne",

note = "Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = mar,

doi = "10.1002/ppsc.201700165",

language = "English",

volume = "35",

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AU - Rosentsveig, Rita

AU - Yadgarov, Lena

AU - (Isai) Feldman, Yishay

AU - Shilstein, Sana

AU - Popovitz-Biro, Ronit

AU - Visic, Bojana

AU - Sedova, Anastasiya

AU - Cohen, Sidney R.

AU - Li, Yuanyuan

AU - Frenkel, Anatoly I.

AU - Tenne, Reshef

PY - 2018/3

Y1 - 2018/3

N2 - Inorganic fullerene-like closed-cage nanoparticles of MoS2 and WS2 (IF-MoS2; IF-WS2), are synthesized in substantial amounts and their properties are widely studied. Their superior tribological properties led to large scale commercial applications as solid lubricants in numerous products and technologies. Doping of these nanoparticles can be used to tune their physical properties. In the current work, niobium (Nb) doping of the nanoparticles is accomplished to an unprecedented low level (≤0.1 at%), which allows controlling the work function and the band gap. The Nb contributes a positive charge, which partially compensates the negative surface charge induced by the intrinsic defects (sulfur vacancies). The energy diagram and position of the Fermi level on the nanoparticles surface is determined by Kelvin probe microscopy and optical measurements. Some potential applications of these nanoparticles are briefly discussed.

AB - Inorganic fullerene-like closed-cage nanoparticles of MoS2 and WS2 (IF-MoS2; IF-WS2), are synthesized in substantial amounts and their properties are widely studied. Their superior tribological properties led to large scale commercial applications as solid lubricants in numerous products and technologies. Doping of these nanoparticles can be used to tune their physical properties. In the current work, niobium (Nb) doping of the nanoparticles is accomplished to an unprecedented low level (≤0.1 at%), which allows controlling the work function and the band gap. The Nb contributes a positive charge, which partially compensates the negative surface charge induced by the intrinsic defects (sulfur vacancies). The energy diagram and position of the Fermi level on the nanoparticles surface is determined by Kelvin probe microscopy and optical measurements. Some potential applications of these nanoparticles are briefly discussed.

KW - doping

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