Ion-Selective Properties of KxV2O5·nH2O

— Compounds with the general formula (0.1 ≤ х ≤ 0.33, 0.2 ≤ n ≤ 0.5) have been synthesized via hydrolytic precipitation using VOSO 4 ·3H 2 O and HCl. In the presence of hydrated vanadyl sulfate at a KVO 3 /VOSO 4 ·3H 2 O molar ratio between 0.1 and 1.0, the process yields having the highest tetraval...

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Bibliographic Details
Published in:Inorganic materials 2021-08, Vol.57 (8), p.798-804
Main Authors: Podvalnaya, N. V., Zakharova, G. S.
Format: Article
Language:English
Subjects:
Cations
Chemistry
Chemistry and Materials Science
Electrode materials
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Materials selection
Potassium vanadate
Selectivity
Vanadium compounds
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Summary:— Compounds with the general formula (0.1 ≤ х ≤ 0.33, 0.2 ≤ n ≤ 0.5) have been synthesized via hydrolytic precipitation using VOSO 4 ·3H 2 O and HCl. In the presence of hydrated vanadyl sulfate at a KVO 3 /VOSO 4 ·3H 2 O molar ratio between 0.1 and 1.0, the process yields having the highest tetravalent vanadium content. The synthesized compounds have been proposed as electrode materials of all-solid-state ion-selective electrodes. The best performance is offered by an electrode with a based membrane sensitive to potassium cations in the range 1 ≤ ≤ 4 with a calibration curve slope of 56 mV/ at 3.6 ≤ рН ≤ 7.0. We have determined the selectivity coefficients of the electrodes for singly, doubly, and triply charged cations.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168521080100