Journal Article

PUBDB-2022-00095

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png SiO$_2$–TiO$_2$ Binary Aerogels: A Small-Angle Scattering Study

Baranchikov, A. E. (Corresponding author) ; Kopitsa, G. P. ; Yorov, K. E. ; Sipyagina, N. A. ; Lermontov, S. A. ; Pavlova, A. A. ; Kottsov, S. Y. ; Garamus, V. M. ; Ryukhtin, V. ; Ivanov, V. K.

2021
MAIK Nauka/Interperiodica Publ. Moscow

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Please use a persistent id in citations: doi:10.1134/S003602362106005X

Abstract: Structural analysis in the range of characteristic sizes from 1 nm to ~1.5 μm was performed for SiO$_2$–TiO$_2$ aerogels prepared in supercritical CO$_2$, isopropanol, hexafluoroisopropanol, or methyl-tert-butylether using small-angle X-ray scattering and neutron scattering complementary methods. A two-level modelthat accounts for scattering by individual inhomogeneities and their aggregates, which have fractal properties,satisfactorily describes the aerogel structures over the entire range of scales. It is shown for the first time thatthe titania concentration is the key factor in the small-angle neutron and X-ray scattering by SiO$_2$–TiO$_2$ aero-gels. The phase composition of an aerogel does not sign ificantly affect the aerogel structure in the range ofscales from 1 nm to ~1.5 μm, as probed by small-angle X-ray and neutron scattering.

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Contributing Institute(s):

1. EMBL-User (EMBL-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P12 (PETRA III)

Appears in the scientific report 2021

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Database coverage:
Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Springer ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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