Low-temperature synthesis of anatase–brookite composite nanocrystals: the junction effect on photocatalytic activity

Anatase–brookite composite nanocrystals have successfully been synthesized at 50 °C using a simple liquid-phase process. The photocatalytic activity of the sample for the gas-phase oxidation of CH 3CHO is 5.4 times greater than that of a single-phase anatase sample with comparable crystallite size a...

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Veröffentlicht in:	Journal of colloid and interface science 2005-01, Vol.281 (2), p.510-513
Hauptverfasser:	Ozawa, Toshiaki, Iwasaki, Mitsunobu, Tada, Hiroaki, Akita, Tomoki, Tanaka, Koji, Ito, Seishiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Anatase Brookite Chemistry Colloidal state and disperse state Exact sciences and technology Fine particles General and physical chemistry Photocatalyst Photochemistry Physical and chemical studies. Granulometry. Electrokinetic phenomena Physical chemistry of induced reactions (with radiations, particles and ultrasonics) TiO 2
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Zusammenfassung:	Anatase–brookite composite nanocrystals have successfully been synthesized at 50 °C using a simple liquid-phase process. The photocatalytic activity of the sample for the gas-phase oxidation of CH 3CHO is 5.4 times greater than that of a single-phase anatase sample with comparable crystallite size and surface area. Electron energy loss spectra suggest that this high activity results from junction between anatase and brookite crystals.
ISSN:	0021-9797 1095-7103
DOI:	10.1016/j.jcis.2004.08.137