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Pure and Applied Chemistry

The Scientific Journal of IUPAC

Ed. by Burrows, Hugh / Weir, Ron / Stohner, Jürgen

12 Issues per year

IMPACT FACTOR 2013: 3.112
Rank 41 out of 148 in category Multidisciplinary Chemistry in the 2013 Thomson Reuters Journal Citation Report/Science Edition

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Brookite titania photocatalytic nanomaterials: Synthesis, properties, and applications

Jimin Xie1 / Xiaomeng Lü1 / Jun Liu1 / Huoming Shu1

1School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, China

Citation Information: Pure and Applied Chemistry. Volume 81, Issue 12, Pages 2407–2415, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: 10.1351/PAC-CON-08-11-12, November 2009

Publication History

Published Online:
2009-11-29

Phase-pure brookite TiO2 and its activity has been obscured for its difficulty of synthesis. Hence, we introduced the method of preparation and property of phase-pure brookite TiO2 and prepared phase-pure brookite TiO2 by hydrothermal method using Ti(SO4)2 as precursor. Phase formation was achieved by hydrothermal treatment at 180 °C after different synthesis time. The physical and photophysical properties of samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV–vis diffraction (UV–vis/DRS), and Raman spectroscopy. The dependence of the photocatalytic activities on synthesis time and correlations with the physical properties of brookite samples was examined in detail. In the case of mineralization of rhodamine B (Rh B), the sample with the narrowest bandgap and the lowest photoluminescence (PL) intensity (at hydrothermal synthesis time 36 h) showed the best photodecolorization activity. Proposed decolorization mechanism was elucidated in the light of the UV–vis spectra of the analyzed degradation products and frontier electron density (FED) theory. The results indicated that photocatalytic decolorization by brookite TiO2 is a highly effective way to remove Rh B under near-visible light irradiation.

Keywords: brookite; particle synthesis; photodecolorization; photodegradation; rhodamine B; sampling

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