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• Bellardita, M
• Palmisano, L
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• Bellardita, M
• Palmisano, L
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• Bellardita, M
• Palmisano, L

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Catalysts 2013, 3(1), 36-73; doi:10.3390/catal3010036

Review

Brookite, the Least Known TiO₂ Photocatalyst

Agatino Di Paola* , Marianna Bellardita and Leonardo Palmisano

"Schiavello-Grillone" Photocatalysis Group, Dipartimento di Energia, Ingegneria dell'Informazione, e modelli Matematici (DEIM), Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy

* Author to whom correspondence should be addressed.

Received: 12 November 2012; in revised form: 9 January 2013 / Accepted: 10 January 2013 / Published: 18 January 2013

(This article belongs to the Special Issue Photocatalysts)

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Abstract: Brookite is the least studied TiO₂ photocatalyst due to the difficulties usually encountered in order to obtain it as a pure phase. In this review, a comprehensive survey of the different methods available for preparing brookite powders and films is reported. Attention has been paid both to the most traditional methods, such as hydrothermal processes at high temperatures and pressures, and to environmentally benign syntheses using water soluble compounds and water as the solvent. Papers reporting the photocatalytic activity of pure and brookite-based samples have been reviewed.

Keywords: TiO₂; brookite; brookite nanostructures; brookite films; mixtures of TiO₂ phases; brookite-based photocatalysts

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