Authors:
M. Crişan Roumanian Academy Institute of Physical Chemistry Ilie Murgulescu Bucharest Roumania 060021 202 Splaiul Independenţei

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Ana Brăileanu Roumanian Academy Institute of Physical Chemistry Ilie Murgulescu Bucharest Roumania 060021 202 Splaiul Independenţei

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M. Răileanu Roumanian Academy Institute of Physical Chemistry Ilie Murgulescu Bucharest Roumania 060021 202 Splaiul Independenţei

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D. Crişan Roumanian Academy Institute of Physical Chemistry Ilie Murgulescu Bucharest Roumania 060021 202 Splaiul Independenţei

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V. Teodorescu National Institute for Physics of Materials Bucharest Roumania P.O. Box MG 07 Măgurele

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R. Bîrjega National Institute for Lasers, Plasma and Radiation Physics Bucharest Roumania PO Box MG-36

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V. Marinescu INCDIE ICPE-CA Bucharest Roumania 030138 313 Spl. Unirii

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J. Madarász Budapest University of Technology and Economics Institute of General and Analytical Chemistry Budapest Hungary 1521 Szt. Gellért tér 4

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G. Pokol Budapest University of Technology and Economics Institute of General and Analytical Chemistry Budapest Hungary 1521 Szt. Gellért tér 4

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Abstract  

Pure TiO2 and S-doped TiO2 sol–gel nanopowders were prepared by controlled hydrolysis-condensation of titanium alkoxides. The influence of different Ti-alkoxides (tetraethyl-, tetraisopropyl- and tetrabutyl-orthotitanate) used in obtaining TiO2 porous materials in similar conditions (water/alkoxide ratio, solvent/alkoxide ratio, pH and temperature of reaction) has been investigated. The relationship between the synthesis conditions and the properties of titania nanosized powders, such as thermal stability, phase composition, crystallinity, morphology and size of particles, BET surface area and the influence of dopant was investigated. The nature of the alkyl group strongly influences the main characteristics of the obtained oxide powders, fact which is pointed out by thermal analysis, X-ray diffraction, TEM and BET surface area measurements.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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