Growth, structural effects, and non-linear and spectroscopic properties of nanocomposites based on α-NiSO4·6H2O single crystals with TiO2 nanoparticles or sols

Kuz’micheva, G.M.; Arbanas, L.A.; Manomenova, V.L.; Kaurova, I.A.; Rybakov, V.B.; Khramov, E.V.; Lobanova, N.A.; Stefanovich, S.Y.; Dorokhov, A.V.

Авторы: Kuz’micheva Galina M., Arbanas Levko A., Manomenova Vera L., Kaurova Irina A., Rybakov Victor B., Khramov Evgeny V., Lobanova Nadezhda A., Stefanovich Sergey Yu, Dorokhov Andrey V.
Журнал: Journal of Alloys and Compounds
Том: 965
Год издания: 2023
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 171369
DOI: 10.1016/j.jallcom.2023.171369
Аннотация: Nanocomposites based on nickel sulfate hexahydrate α-NiSO4·6H2O (NSH) with titanium (IV) oxide introduced in the form of nanoparticles (Hombifine N: anatase; Degussa P25: 85% anatase + 15% rutile; h-phase: 86% h - phase + 14% anatase, NSH:Ti(1)) or sols (NSH:Ti(2)) are synthesized for the first time. X-ray diffraction study reveals a single-phase nature of samples, the full occupancy of all crystallographic sites in the NSH:Ti(1) structures, and the presence of Ti4+ ions in interstitial sites near the vacant Ni site in the NSH:Ti(2) structures. A crystallization of the nanosized h-phase of the composition TiO2-x ´ mH2O directly in the NSH:Ti(1) crystalline matrix with the formation of TiO2 with the rutile structure, facilitated by the structural-geometric correspondence of 2D projections of NSH and rutile, is observed for the first time. The presence of TiO2 in the interblock space of NSH:Ti(1) crystals affects the unit cell parameters due to the induced stresses, which is practically not described in the literature. The intensity of SHG signals of NSH:Ti varies depending on both the prehistory of TiO2 samples and the crystal state, single-crystal or powdered, of the object under study: the highest values were observed for the NSH:Ti(2) powder with the lowest content of titanium ions. The UV-VIS study reveals similar absorption and transmission bands, but with little difference in band width and intensity, for NSH, NSH:Ti(1) and NSH:Ti(2), which can be perspective for UV filters operating in the solar-blind range.
Добавил в систему: Стефанович Сергей Юрьевич

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Growth, structural effects, and non-linear and spectroscopic properties of nanocomposites based on α-NiSO4·6H2O single crystals with TiO2 nanoparticles or solsстатья

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