Preparation of anatase powders from fluorine-complexedtitanium(IV) aqueous solution using microwave irradiation

José A. Ayllón; Ana M. Peiró; Lahcen Saadoun; Elena Vigil; Xavier Domènech; José Peral

doi:10.1039/B002723P

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José A. Ayllón,*^a Ana M. Peiró,^a Lahcen Saadoun,^b Elena Vigil,^c Xavier Domènech^a and José Peral^a

Author affiliations

* Corresponding authors

^a Departament de Química, Universitat Autònoma de Barcelona, Edifici Cn, Campus de la UAB, Cerdanyola, Spain
E-mail: joseantonio.ayllon@uab.es

^b Institut de Ciència de Materials de Barcelona (CSIC) Campus de la UAB, Cerdanyola, Spain

^c Instituto de Materiales y Reactivos, Universidad de la Habana, Cuba

Abstract

The microwave radiation activated precipitation of titanium dioxide from homogeneous aqueous solutions of titanium–fluoro complexes and boric acid has been carried out in batch reactors. Crystalline anatase powders with narrow monodisperse size distribution have been obtained in a short time, at low temperature and atmospheric pressure. Microwave power, irradiation time and precursor concentration determine the properties of the obtained materials, i.e. crystal size, powder aggregate morphology and BET surface area. The obtained materials do not show photocatalytic activity, probably due to a considerable fluoride content that is in the range of 2–5%.

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Article information

DOI: https://doi.org/10.1039/B002723P
Article type: Paper
Submitted: 05 Apr 2000
Accepted: 19 May 2000
First published: 27 Jun 2000

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J. Mater. Chem., 2000,10, 1911-1914

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