WS2 nanotubes dressed in gold and silver: Synthesis, optoelectronic properties, and NO2 sensing
Paper in proceeding, 2021
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 100°C. 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 (λmax = 530 nm) and its enhancement by plasmonic gold "nanoantennas"will be reported as well.
Author
Aleksandr Poliakov
Moscow State University
Chalmers, Physics, Nano and Biophysics
Russian Academy of Sciences
Lena Yadgarov
Ariel University
Weizmann Institute of Science
Vasily Lebedev
Moscow State University
University of Limerick
Ratibor G. Chumakov
National Research Centre "Kurchatov Institute"
Lada V. Yashina
Moscow State University
Marina N. Rumyantseva
Moscow State University
Reshef Tenne
Weizmann Institute of Science
Eugene A. Goodilin
Moscow State University
AIP Conference Proceedings
0094-243X (ISSN) 1551-7616 (eISSN)
Vol. 2359 0200259780735441033 (ISBN)
1st International Congress on Graphene, 2D Materials and Applications, 2D MATERIALS 2019
Sochi, Russia,
Sochi, Russia,
Subject Categories (SSIF 2025)
Materials Chemistry
Condensed Matter Physics
DOI
10.1063/5.0055823