Preparation, characterization, and photoactivity of polycrystalline nanostructured TiO2 catalysts

被引：158
作者：
Addamo, M
Augugliaro, V
Di Paola, A
García-López, E
Loddo, V
Marci, G
Molinari, R
Palmisano, L
Schiavello, M
机构：
[1] Univ Palermo, Dipartimento Ingn Chim Proc & Mat, I-90128 Palermo, Italy
[2] Univ Calabria, Dipartimento Ingn Chim & Mat, I-87030 Arcavacata Di Rende, CS, Italy
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 10期
关键词：
D O I：
10.1021/jp0312924
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Various preparations of nanostructured TiO(2) Starting from Ti(iSO-OC(3)H(7))(4) or TiCl(4) are reported. The samples were characterized by X-ray diffractometry, specific surface area and porosity determinations, scanning and transmission electron microscopy, and diffuse reflectance spectroscopy. 4-Nitrophenol photodegradation in aqueous medium was employed as a probe reaction to test the photoactivity of the catalysts. The photoactivity of some samples derived from Ti(iso-OC(3)H(7))(4) was found comparable with that of commercial powders. Calcination after the hydrolysis process was necessary to achieve crystallization of the particles before using them as photocatalysts for the reaction studied. The samples deriving from TiCl(4) were the most photoactive among the home-prepared catalysts, and neither filtration nor calcination was needed to obtain a highly photoactive anatase phase.
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页码：3303 / 3310
页数：8
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