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Type of publication: research article
Type of publication (PDB): Straipsnis kitose duomenų bazėse / Article in other databases (S4)
Field of Science: Fizika / Physics (N002)
Author(s): Bondarenka, Vladimiras;Sereika, Raimundas
Title: XPS study of sol–gel synthesized vanadium-titanium-hydroquinone oxide bronze films
Is part of: International letters of chemistry, physics and astronomy. Bach, Switzerland : SciPress Ltd., Vol. 54 (2015)
Extent: p. 201-207
Date: 2015
Keywords: Hydroquinone;Sol-gel technology;Valence states of ions;Vanadium oxides;X-Ray photoelectron spectroscopy
Abstract: Vanadium-titanium-hydroquinone oxide bronze, V1.67Ti0.33O5±δ /HQ (HQ-hydroquinone), was synthesized by using the sol–gel method. Vanadium pentoxide powder, titanium dihydride, hydrogen peroxide and hydroquinone were used as the starting materials to produce bronze. The composition of the synthesized compound was compared with V1.67Ti0.33O5±δ∙nH2O/HQ xerogel data. The xerogel and bronze were investigated by means of the XPS method. Analysis of the V–O region of XPS spectra showed that vanadium ions in xerogel ocurr in V5+ and V4+ states. In bronze, these ions are in a stable V5+ state. The oxygen in xerogel can be associated with O2- ions, hydroxide grouping and water. Oxygen only exists in bronze in the form of O2- ions and hydroxyl groups. Titanium ions in both cases are in a stable Ti4+ state
Affiliation(s): Fizinių ir technologijos mokslų centro Puslaidininkių fizikos institutas
Vytauto Didžiojo universitetas
Švietimo akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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