Nano Archive

Photocatalytic activity of nanostructured TiO2 films produced by supersonic cluster beam deposition

Della Foglia, Flavio and Losco, Tonia and Piseri, Paolo and Milani, Paolo and Selli, Elena (2009) Photocatalytic activity of nanostructured TiO2 films produced by supersonic cluster beam deposition. Journal of Nanoparticle Research, 11 (6). pp. 1339-1348.

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The photocatalytic activity of thin, nanostructured films of titanium dioxide, synthesized by supersonic cluster beam deposition (SCBD) from the gas phase, has been investigated employing the photodegradation of salicylic acid as test reaction. Because of the low deposition energy, the so-deposited highly porous TiO2 films are composed of nanoparticles maintaining their original properties in the film, which can be fully controlled by tuning the deposition and post-deposition treatment conditions. A systematic investigation on the evolution of light absorption properties and photoactivity of the films in relation to their morphology, determined by AFM analysis, and phase composition, determined by Raman spectroscopy, has been performed. The absorption and photocatalytic activity of the nanostructured films in the visible region could be enhanced either through post-deposition annealing treatment in ammonia containing atmosphere or employing mild oxidation conditions, followed by annealing in N2 at 600 °C.

Item Type:Article
Uncontrolled Keywords:Supersonic cluster beam deposition - Titanium dioxide films - Photocatalytic activity - Nanomaterials - Semiconductors
Subjects:Physical Science > Nanoelectronics
ID Code:6546
Deposited By:SPI
Deposited On:27 Jul 2009 15:57
Last Modified:27 Jul 2009 15:57

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