Abstract
A new method for the synthesis of porous crystalline tin-dioxide (SnO2) layers from composites on the basis of multiwalled carbon nanotubes (MWCNTs) and nonstoichiometric amorphous tin oxide (MWCNT/SnO x ) is proposed. An MWCN/SnO x composite layer produced by magnetron sputtering is annealed in air atmosphere at 500°C for 30 min. A homogeneous porous layer comprised of crystalline SnO2 spherical particles with a size of about 0.1 μm is obtained as a result. In the process of annealing, nearly all the amount of carbon is removed in the form of gaseous oxides (only a small amount remains in the upper part of the porous SnO2 layer). The structural defectiveness of nanotube walls, which increases because of the magnetron deposition of tin, plays a crucial role in the carbon oxidation and destruction of MWCNTs.
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Original Russian Text © S.N. Nesov, P.M. Korusenko, V.V. Bolotov, S.N. Povoroznyuk, K.E. Ivlev, D.A. Smirnov, 2017, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2017, Vol. 43, No. 21, pp. 16–23.
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Nesov, S.N., Korusenko, P.M., Bolotov, V.V. et al. The formation of layers of porous crystalline tin dioxide from a composite on the basis of multiwalled carbon-nanotube arrays. Tech. Phys. Lett. 43, 961–964 (2017). https://doi.org/10.1134/S1063785017110074
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DOI: https://doi.org/10.1134/S1063785017110074