On the Nature of the Phase “η-TiO2” | Sciact - CRIS-system of Boreskov Institute of Catalysis

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)

Russian Foundation for Basic Research

13-03-00367

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.

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

Submitted:	Jul 17, 2015
Accepted:	Oct 14, 2015
Published online:	Oct 19, 2015
Published print:	Jan 1, 2016

Web of science:	WOS:000367621300021
Scopus:	2-s2.0-84953270265
Elibrary:	26865128
Chemical Abstracts:	2015:1675009
Chemical Abstracts (print):	164:90056
OpenAlex:	W2127538817

DB	Citing
Web of science	18
Scopus	19
Elibrary	23
OpenAlex	19