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WS2 nanotubes dressed in gold and silver: synthesis, optoelectronic properties, and NO2 sensing

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conference contribution
posted on 2022-10-14, 11:25 authored by Alexander Yu. Polyakov, Lena Yadgarov, VASILY LEBEDEVVASILY LEBEDEV, Ratibor G. Chumakov, Lada V. Yashina, Marina N. Rumyantseva, Reshef Tenne, Eugene A. Goodilin
This conference contribution is focused on decoration of WS2 nanotubes (NT-WS2) with gold and silver nanoparticles via facile routes implying direct reaction of tungsten disulfide with water-soluble AuIII and AgI species at 100oC. The underlying mechanism of these interactions will be discussed in details based on extensive studies of reaction mixtures and resulting metal–NT-WS2 nanocomposites, including thorough X-ray photoelectron spectroscopy (XPS) analysis. Surprising features in optical spectra of the designed nanocomposites would be reported, including suppression of plasmon resonance in tiny noble metal nanoparticles (< 10 nm in diameter) grown onto NT-WS2. The plasmonic features of individual gold nanoparticles on the surface of disulfide nanotube were also characterized by electron energy loss spectroscopy in scanning transmission electron microscopy mode (STEM-EELS). Photoresistive NO2-sensing response of NT-WS2 under green light illumination (Ȝmax = 530 nm) and its enhancement by plasmonic gold “nanoantennas” will be reported as well.



AIP Conference Proceedings;2359, 020025


American Institute of Physics


peer-reviewed The full text of this article will not be available in ULIR until the embargo expires on the 22/06/2022


Copyright 2021 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics The following article appeared in AIP Conference Proceedings 2359, 020025 (2021) and may be found at



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