Effect of antimony on the reaction of nanocrystalline SnO2 with oxygen

Nanocrystalline antimony-doped ([Sb]/([Sb] + [Sn]) = 0–2 at %) SnO 2 powders have been synthesized by coprecipitation from solution. The composition, crystal structure, and microstructural parameters of the powders, as well as the antimony distribution in them, have been studied by laser mass spectr...

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Bibliographic Details
Published in:Inorganic materials 2016, Vol.52 (1), p.1-6
Main Authors: Petukhov, I. A., Zhukova, A. A., Rumyantseva, M. N., Meshkov, L. L., Gaskov, A. M.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
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Summary:Nanocrystalline antimony-doped ([Sb]/([Sb] + [Sn]) = 0–2 at %) SnO 2 powders have been synthesized by coprecipitation from solution. The composition, crystal structure, and microstructural parameters of the powders, as well as the antimony distribution in them, have been studied by laser mass spectrometry, X-ray diffraction, low-temperature nitrogen adsorption measurements, and IR spectroscopy. The reaction of the synthesized materials with oxygen has been studied in situ by electrical conductance measurements. Oxygen chemisorption on the surface of unmodified SnO 2 leads to predominant formation of the molecular species O 2(ads) - . Increasing the Sb concentration in the SnO 2 ‹Sb› samples increases the fraction of the monatomic species O 2(ads) - , which can be explained in terms of a combination of crystal-chemical and electronic factors.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168516010131