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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/4109

Title: An aqueous solution-gel citratoperoxo-Ti(IV) precursor: synthesis, gelation, thermo-oxidative decomposition and oxide crystallization
Authors: HARDY, An
D'HAEN, Jan
VAN BAEL, Marlies
MULLENS, Jules
Issue Date: 2007
Publisher: SPRINGER
Citation: JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 44(1). p. 65-74
Abstract: A watersoluble citratoperoxo-Ti(IV) complex was synthesized and the chemical reactions that occur during the different synthesis steps were studied. A crystalline complex could be obtained by slow evaporation of highly concentrated precursor solutions, while fast evaporation led to the preparation of a homogeneous, amorphous glassy solid, the gel. The chemical structure of the crystallized complex ion and of the gel were shown to be related, but differed due to the presence of a crosslinked ammonium citrate network in the gel, which prevents crystallization. The thermo-oxidative decomposition pathway of the crystalline complex and the gel to the metal oxide is described based on in-situ thermal analysis techniques combined with Fourier transform infrared and mass spectrometry, diffuse reflection infrared by Fourier transform as well as high-temperature X-ray diffraction. The study offers a fundamental understanding of the behavior of the aqueous solution gel Ti(IV) precursor which is applicable in the preparation of all kinds of multimetal oxide systems containing Ti(IV) ions.
Notes: Hasselt Univ, Inst Mat Res, Lab Inorgan & Phys Chem, Diepenbeek, Belgium. XIOS Hogesch, Dept IWT, Diepenbeek, Belgium. IMEC, Div IMOMEC, Diepenbeek, Belgium.VAN BAEL, MK, Hasselt Univ, Inst Mat Res, Lab Inorgan & Phys Chem, Diepenbeek, Belgium.marlies.vanbael@uhasselt.be
URI: http://hdl.handle.net/1942/4109
DOI: 10.1007/s10971-007-1601-3
ISI #: 000249561300010
ISSN: 0928-0707
Category: A1
Type: Journal Contribution
Validation: ecoom, 2008
Appears in Collections: Research publications

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