Study of the Stable Nanocrystalline TiO<Subscript>2</Subscript> Hydrosol and its Fractions期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Study of the Stable Nanocrystalline TiO2 Hydrosol and its Fractions

Authors:	O.?B.?Pavlova-Verevkina author-information" > author-information__contact u-icon-before" > mailto:bvpv@orc.ru" title=" bvpv@orc.ru" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,S.?N.?Chvalun,E.?D.?Politova,V.?V.?Nazarov,L.?A.?Ozerina,A.?N.?Ozerin

Affiliation:	(1) Karpov Institute of Physical Chemistry, Vorontzovo Pole St. 10, Moscow, 105064, Russia;(2) Mendeleyev University of Chemical Technology of Russia, Miusskaya Sq. 9, Moscow, 125190, Russia;(3) Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Profsoyuznaya St. 70, Moscow, 117393, Russia

Abstract:	Nanodisperse TiO₂ hydrosol and two of its fractions stabilized by HCl are studied. The anatase nanocrystalline fractions are obtained by the stepped coagulation of the stable sol using dependence of coagulation thresholds on size of nanocrystallites. X-Ray investigation in small and wide angles of scattering has revealed that the anatase nanocrystallites have a shape of 2.5–3 nm thick elongated plates with 8–18 nm lateral sizes. The concentrated hydrosols with the reduced HCl content prepared from the anatase fractions are shown to form an ordered structure. Narrow fractions of TiO₂ nanocrystallites obtained from the stable hydrosols seem to be promising for the preparation of highly ordered structures with a nanometer periodicity.

Keywords:	TiO₂ nanocrystallites hydrosol fractions SAXS WAXS
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