Email this article Influence of Formation Conditions on Physicochemical Properties of CsxV2O5·nH2O
- Authors: Podval’naya N.V.1, Zakharova G.S.1
-
Affiliations:
- Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
- Issue: Vol 68, No 3 (2023)
- Pages: 300-309
- Section: СИНТЕЗ И СВОЙСТВА НЕОРГАНИЧЕСКИХ СОЕДИНЕНИЙ
- URL: https://journals.rcsi.science/0044-457X/article/view/136323
- DOI: https://doi.org/10.31857/S0044457X22601389
- EDN: https://elibrary.ru/JCUAQO
- ID: 136323
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Abstract
Cesium-containing compounds of hydrated vanadium(V) oxide of general formula СsxV2O5·nH2O, where 0.1 ≤ x ≤ 0.6 and 0.8 ≤ n ≤ 1.2, were prepared by hydrothermal, hydrolytic, and sol–gel processes. The preparation conditions were found to determine the intercalated cation (Cs+) homogeneity range and the vanadium(IV) percentage in the samples. The prepared compounds were characterized by a set of physicochemical methods, namely, IR spectroscopy, X-ray powder diffraction, thermogravimetric analysis, scanning electron microscopy, and low-temperature nitrogen adsorption. The СsxV2O5·nH2O compounds prepared by the hydrolytic and hydrothermal methods had the highest specific surface area, equal to 34.0 and 16.5 m2/g, respectively. The temperature-dependent electrical conductivities of СsxV2O5·nH2O samples were measured to estimate the activation energy of conduction in compounds having various vanadium(IV) percentages. It is only in the high-temperature range that the activation energy of conduction depended on the V4+ percentage in the sample; the least value was found in the hydrothermally prepared Сs0.6V2O5·H2O samples.
About the authors
N. V. Podval’naya
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Email: podnat@inbox.ru
620990, Yekaterinburg, Russia
G. S. Zakharova
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Author for correspondence.
Email: podnat@inbox.ru
620990, Yekaterinburg, Russia
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