Abstract:
Nanocomposites based on multiwalled carbon nanotubes (MWCNT) with manganese dioxide MnO$_{2-x}$ and copper oxide (CuO) were obtained and investigated. The morphology and elemental composition of MWCNT-layer and nanocomposites MWCNT/MnO$_{2-x}$, MWCNT/MnO$_{2-x}$/CuO were studied by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The gas sensing response of MWCNT-layer and nanocomposites upon exposure to hydrogen sulfide (H$_2$S) and nitrogen dioxide (NO$_2$) was demonstrated at room temperature. Effect of increasing the conductivity of MWCNT-layer and nanocomposites upon exposure to NO$_2$ indicates these nanomaterials have conductive of $p$-type. Copper oxide in nanocomposite significantly enhances the gas sensing response to H$_2$S.
The work (the part concerning research of gas-sensing properties of nanocomposites) was performed within a government assignment to the Omsk Scientific SB RAS within the Basic Scientific Research Program for state academies for years 2013–2020, direction II.9, project no. II.9.2.1 (registration number in EGISU NIOKTR system,
AAAA-A17-117041210227-8). The part concerning the nanocomposite synthesis and morphological studies using scanning electron microscopy was partially supported by the Russian Foundation for Basic Research, project no. 18-48-550009r_a.
Citation:
Yu. A. Sten'kin, V. V. Bolotov, D. V. Sokolov, V. E. Roslikov, K. E. Ivlev, “Synthesis and gas-sensing properties of MnO$_{2-x}$ and MnO$_{2-x}$/CuO-coated multiwalled carbon nanotube nanocomposites”, Fizika Tverdogo Tela, 61:11 (2019), 2240–2243; Phys. Solid State, 61:11 (2019), 2224–2227
Citation in format AMSBIB
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