A homogeneous TiO2 gel was obtained by hydrolysing titanium(IV) isopropoxide that was previously modified by reaction with acetic acid. The so stabilized precursor was hydrolysed under strong acidic medium (pH=0 by HCl). Dried TiO2 powders were characterized by FT-IR, XRD, N-2 adsorption analyses, coupled thermogravimetric (TG) gas chromatographic (GC) and mass spectrometric (MS) analyses. A semiquantitative analysis of the main evolved chemical species allowed to depict both the chemical rearrangements occurring in the TiO2 matrix during pyrolysis and the chemical composition of the initial gel
Pyrolysis study of sol-gel derived TiO2 powders. Part III. TiO2-anatase prepared by reacting titanium (IV) isoproxide with acetic acid
Campostrini, Renzo;Ischia, Marco;
2004-01-01
Abstract
A homogeneous TiO2 gel was obtained by hydrolysing titanium(IV) isopropoxide that was previously modified by reaction with acetic acid. The so stabilized precursor was hydrolysed under strong acidic medium (pH=0 by HCl). Dried TiO2 powders were characterized by FT-IR, XRD, N-2 adsorption analyses, coupled thermogravimetric (TG) gas chromatographic (GC) and mass spectrometric (MS) analyses. A semiquantitative analysis of the main evolved chemical species allowed to depict both the chemical rearrangements occurring in the TiO2 matrix during pyrolysis and the chemical composition of the initial gelFile in questo prodotto:
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