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On the Nature of the Phase “η-TiO2” Full article

Journal New Journal of Chemistry
ISSN: 1144-0546 , E-ISSN: 1369-9261
Output data Year: 2016, Volume: 40, Pages: 151-161 Pages count : 11 DOI: 10.1039/C5NJ01870F
Tags TITANIUM-DIOXIDE; ANATASE; TiO2; RUTILE; MICROSTRUCTURE; PHOTOCATALYSIS; NANOPARTICLES; SURFACE
Authors Vasilyeva Inga 1 , Kuzʹmicheva Galina 2 , Pochtar Alena 3 , Gainanova Asiya 2 , Timaeva Olesya 2 , Dorokhov Andrey 2 , Podbel'skiy Vadim 4
Affiliations
1 Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novisibirsk, Russia
2 Lomonosov State University of Fine Chemical Technologies, Moscow, Russia
3 Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novisibirsk, Russia
4 National Research University ‘‘Higher School of Economics’’, Moscow, Russia

Funding (1)

1 Russian Foundation for Basic Research 13-03-00367

Abstract: Conditions for a sulfate method for the synthesis of a metastable modification, which has been previously described as “η-TiO2” (Dadachov, 2006), were found and the stability region of this phase in the hydrolysis temperature–hydrolysis duration coordinates was determined. Investigation by a number of methods (X-ray powder diffraction, a differential dissolution method, thermogravimetry, IR spectroscopy, Raman spectroscopy) showed that the η-phase is not a polymorph of TiO2 but is a pseudo-polymorph of titanium dioxide hydrate. It was demonstrated that nanoparticles of the low-temperature η-phase consist of the [TiO2−x·mH2O] core, the structure of which can be described as a superstructure in relation to anatase, and an amorphous shell containing TiO2−x (trace amount), OH, HSO4 and water. The average crystallite size depends on the ratio of the constituents.
Cite: Vasilyeva I. , Kuzʹmicheva G. , Pochtar A. , Gainanova A. , Timaeva O. , Dorokhov A. , Podbel'skiy V.
On the Nature of the Phase “η-TiO2”
New Journal of Chemistry. 2016. V.40. P.151-161. DOI: 10.1039/C5NJ01870F WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: Jul 17, 2015
Accepted: Oct 14, 2015
Published online: Oct 19, 2015
Published print: Jan 1, 2016
Identifiers:
Web of science: WOS:000367621300021
Scopus: 2-s2.0-84953270265
Elibrary: 26865128
Chemical Abstracts: 2015:1675009
Chemical Abstracts (print): 164:90056
OpenAlex: W2127538817
Citing:
DB Citing
Web of science 18
Scopus 19
Elibrary 24
OpenAlex 20
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