This article is cited in 17 papers

Nonstoichiometry, structure and properties of nanocrystalline oxides, carbides and sulfides

A. A. Valeeva^ab, A. A. Rempel^abc, S. V. Rempel'^ab, S. I. Sadovnikov^a, A. I. Gusev<sup>a

a</sup> Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg
^b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg
^c Institute of Metallurgy, Ural Division of the Russian Academy of Sciences, Yekaterinburg

Abstract: The results of recent experimental studies of the influence of the size of oxide, carbide and sulfide nanoparticles on changes in their nonstoichiometry are analyzed and generalized. In relation to intrinsically nonstoichiometric titanium oxides and niobium and vanadium carbides, on the one hand, and stoichiometric silver sulfides, on the other hand, it is shown that a decrease in the particle size to the nano scale has a strong impact on the chemical composition of nanocrystalline compounds, viz., it leads to the occurrence of or to increase in nonstoichiometry. A conclusion is drawn that interplay between the particle size and nonstoichiometry is common to all solid nanocrystalline substances and should be taken into account in studies on the synthesis, structure and properties of these systems.
The bibliography includes 260 references.

Keywords: nonstoichiometry, nanocrystalline compounds, oxides, carbides, sulfides, size of nanoparticles.

Received: 05.06.2020

DOI: 10.1070/RCR4967

 English version: Russian Chemical Reviews, 2021, 90:5, 601–626

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