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7 results on '"Perenze, Nicoletta"'

1. Photocatalytic Activity in CH3CN Related to the Surface Properties of TiO2 Powders Prepared by Sol-Gel Method

Author

Bettoni, Marta, Candori, Pietro, Marmottini, Fabio, Perenze, Nicoletta, Rol, Cesare, Sebastiani, Giovanni V., and Vecchiocattivi, Franco

Subjects
Article Subject, lcsh:TJ807-830, lcsh:Renewable energy sources
Abstract

Some TiO2 powders, prepared from titanium(IV)tetraisopropoxide by the sol-gel method and thermally treated between 100 and 1000∘C, have been characterized by X-ray powder diffraction and by nitrogen adsorption and desorption at 77 K to calculate the BET-specific surface area, from which the micropore volume and the external surface area can be derived. The photocatalytic activity (ka) of the above powders has been evaluated considering the TiO2-sensitized photo-oxidation of 4-methoxybenzyl alcohol in CH3CN as the test reaction. The decrease of ka have been related to the decrease of the BET surface area, the micropore volume, and the external surface area of the TiO2 powders, but a satisfactory linear correlation is observed only for the last superficial parameter.

Published
2009

3. NMR study of paper

Author

Paci, Maurizio, primary, Federici, Carlo, additional, Capitani, Donatella, additional, Perenze, Nicoletta, additional, and Segre, Anna Laura, additional

Published
1995
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6. Photocatalytic Activity in CH3CN Related to the Surface Properties of TiO2 Powders Prepared by Sol-Gel Method.

Author

Bettoni, Marta, Candori, Pietro, Marmottini, Fabio, Perenze, Nicoletta, Rol, Cesare, Sebastiani, Giovanni V., and Vecchiocattivi, Franco

Subjects
TITANIUM, X-ray diffraction, THERMAL desorption, OXIDATION, ADSORPTION (Chemistry), SURFACE chemistry
Abstract

Some TiO2 powders, prepared from titanium(IV)tetraisopropoxide by the sol-gel method and thermally treated between 100 and 1000?C, have been characterized by X-ray powder diffraction and by nitrogen adsorption and desorption at 77 K to calculate the BET-specific surface area, from which the micropore volume and the external surface area can be derived. The photocatalytic activity (ka) of the above powders has been evaluated considering the TiO2-sensitized photo-oxidation of 4-methoxybenzyl alcohol in CH3CN as the test reaction. The decrease of ka have been related to the decrease of the BET surface area, the micropore volume, and the external surface area of the TiO2 powders, but a satisfactory linear correlation is observed only for the last superficial parameter. [ABSTRACT FROM AUTHOR]

Published
2009
Full Text
View/download PDF

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