Pyrolysis study of sol—gel derived TiO2 powders: Part III. TiO2-anatase prepared by reacting titanium(IV) isopropoxide with acetic acid |
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| Authors: | R. Campostrini M. Ischia L. Palmisano |
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| Affiliation: | (1) Dipartimento di Ingegneria dei materiali, Universita di Trento, via Mesiano 77, 38050 Trento, Italy;(2) Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Universita di Palermo, Viale delle Scienze, 90128 Palermo, Italy |
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| 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, N2 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.This revised version was published online in November 2005 with corrections to the Cover Date. |
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| Keywords: | thermogravimetric-mass spectrometric coupled analyses pyrolysis study TiO2 gel |
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