Decoration of ws2 nanotubes and fullerene-like mos2 with gold nanoparticles

Alexander Yu Polyakov; Lena Yadgarov; Ronit Popovitz-Biro; Vasily A. Lebedev; Iddo Pinkas; Rita Rosentsveig; Yishay Feldman; Anastasia E. Goldt; Eugene A. Goodilin; Reshef Tenne

doi:10.1021/jp407388h

Decoration of ws₂ nanotubes and fullerene-like mos₂ with gold nanoparticles

Alexander Yu Polyakov, Lena Yadgarov, Ronit Popovitz-Biro, Vasily A. Lebedev, Iddo Pinkas, Rita Rosentsveig, Yishay Feldman, Anastasia E. Goldt, Eugene A. Goodilin, Reshef Tenne

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

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Abstract

A new technique of gold nanoparticle (AuNP) growth on the sidewalls of WS₂ inorganic nanotubes (INT-WS₂) and the surface of MoS₂ fullerene-like nanoparticles (IF-MoS₂) is developed to produce metal-semiconductor nanocomposites. The coverage density and mean size of the nanoparticles are dependent on the HAuCl₄/MS₂ (M = W, Mo) molar ratio. AuNPs formation mechanism seems to involve spatially divided reactions of AuCl₄^- reduction and WS ₂/MoS₂ oxidation taking place on the surface defects of the disulfide nanostructures rather than directly at the AuNP-INT/IF interface. A strong epitaxial matching between the lattices of the gold nanoparticles and the INT-WS₂ or IF-MoS₂ seems to suppress plasmon resonance in the nanocomposites with small (<10 nm mean size) AuNPs.

Original language	English
Pages (from-to)	2161-2169
Number of pages	9
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	4
DOIs	https://doi.org/10.1021/jp407388h
State	Published - 30 Jan 2014
Externally published	Yes

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title = "Decoration of ws2 nanotubes and fullerene-like mos2 with gold nanoparticles",

abstract = "A new technique of gold nanoparticle (AuNP) growth on the sidewalls of WS2 inorganic nanotubes (INT-WS2) and the surface of MoS2 fullerene-like nanoparticles (IF-MoS2) is developed to produce metal-semiconductor nanocomposites. The coverage density and mean size of the nanoparticles are dependent on the HAuCl4/MS2 (M = W, Mo) molar ratio. AuNPs formation mechanism seems to involve spatially divided reactions of AuCl4- reduction and WS 2/MoS2 oxidation taking place on the surface defects of the disulfide nanostructures rather than directly at the AuNP-INT/IF interface. A strong epitaxial matching between the lattices of the gold nanoparticles and the INT-WS2 or IF-MoS2 seems to suppress plasmon resonance in the nanocomposites with small (<10 nm mean size) AuNPs.",

author = "Polyakov, {Alexander Yu} and Lena Yadgarov and Ronit Popovitz-Biro and Lebedev, {Vasily A.} and Iddo Pinkas and Rita Rosentsveig and Yishay Feldman and Goldt, {Anastasia E.} and Goodilin, {Eugene A.} and Reshef Tenne",

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month = jan,

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doi = "10.1021/jp407388h",

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AU - Polyakov, Alexander Yu

AU - Yadgarov, Lena

AU - Popovitz-Biro, Ronit

AU - Lebedev, Vasily A.

AU - Pinkas, Iddo

AU - Rosentsveig, Rita

AU - Feldman, Yishay

AU - Goldt, Anastasia E.

AU - Goodilin, Eugene A.

AU - Tenne, Reshef

PY - 2014/1/30

Y1 - 2014/1/30

N2 - A new technique of gold nanoparticle (AuNP) growth on the sidewalls of WS2 inorganic nanotubes (INT-WS2) and the surface of MoS2 fullerene-like nanoparticles (IF-MoS2) is developed to produce metal-semiconductor nanocomposites. The coverage density and mean size of the nanoparticles are dependent on the HAuCl4/MS2 (M = W, Mo) molar ratio. AuNPs formation mechanism seems to involve spatially divided reactions of AuCl4- reduction and WS 2/MoS2 oxidation taking place on the surface defects of the disulfide nanostructures rather than directly at the AuNP-INT/IF interface. A strong epitaxial matching between the lattices of the gold nanoparticles and the INT-WS2 or IF-MoS2 seems to suppress plasmon resonance in the nanocomposites with small (<10 nm mean size) AuNPs.

AB - A new technique of gold nanoparticle (AuNP) growth on the sidewalls of WS2 inorganic nanotubes (INT-WS2) and the surface of MoS2 fullerene-like nanoparticles (IF-MoS2) is developed to produce metal-semiconductor nanocomposites. The coverage density and mean size of the nanoparticles are dependent on the HAuCl4/MS2 (M = W, Mo) molar ratio. AuNPs formation mechanism seems to involve spatially divided reactions of AuCl4- reduction and WS 2/MoS2 oxidation taking place on the surface defects of the disulfide nanostructures rather than directly at the AuNP-INT/IF interface. A strong epitaxial matching between the lattices of the gold nanoparticles and the INT-WS2 or IF-MoS2 seems to suppress plasmon resonance in the nanocomposites with small (<10 nm mean size) AuNPs.

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Decoration of ws₂ nanotubes and fullerene-like mos₂ with gold nanoparticles

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