Nanostructured and nano-porous thin films, offering elevated active surface, are of significant importance for a wide variety of technological applications. Here we report on the electrophoretic deposition - on a conductive substrate - of colloidal TiO2 rod-like shaped nanocrystals dispersed in an organic solvent. Colloidal synthesis allowed obtaining a careful control over the morphological properties and the crystallographic phase of nanoparticles, which resulted in rod-shaped anatase nanocrystals. Compared to spherical nanocrystal, the rod-shape offers enhanced surface/volume ratio, which limits the charge recombination. The electrophoretic deposition drives nanorods toward the immobilization on the conductive surface of the substrate, forming homogeneous nanoporous thin-films composed by densely packed nanorods. Indeed, SEM analysis endorsed that the morphology of NRs is preserved in the thinfilm. The approach reported here colloidal synthesis followed by electrophoretic deposition - could be extended to the functionalization of different surfaces with the peculiar properties inferred by the nanoparticles.

Electrophoretic deposition of colloidal TiO2 nanorods towards nano-porous thin-films / Binetti, E.; Bazzanella, Nicola; Comparelli, R.; Miotello, Antonio. - In: MATERIALS LETTERS. - ISSN 0167-577X. - STAMPA. - 174:(2016), pp. 226-229. [10.1016/j.matlet.2016.03.117]

Electrophoretic deposition of colloidal TiO2 nanorods towards nano-porous thin-films

Bazzanella, Nicola;Miotello, Antonio
2016

Abstract

Nanostructured and nano-porous thin films, offering elevated active surface, are of significant importance for a wide variety of technological applications. Here we report on the electrophoretic deposition - on a conductive substrate - of colloidal TiO2 rod-like shaped nanocrystals dispersed in an organic solvent. Colloidal synthesis allowed obtaining a careful control over the morphological properties and the crystallographic phase of nanoparticles, which resulted in rod-shaped anatase nanocrystals. Compared to spherical nanocrystal, the rod-shape offers enhanced surface/volume ratio, which limits the charge recombination. The electrophoretic deposition drives nanorods toward the immobilization on the conductive surface of the substrate, forming homogeneous nanoporous thin-films composed by densely packed nanorods. Indeed, SEM analysis endorsed that the morphology of NRs is preserved in the thinfilm. The approach reported here colloidal synthesis followed by electrophoretic deposition - could be extended to the functionalization of different surfaces with the peculiar properties inferred by the nanoparticles.
Binetti, E.; Bazzanella, Nicola; Comparelli, R.; Miotello, Antonio
Electrophoretic deposition of colloidal TiO2 nanorods towards nano-porous thin-films / Binetti, E.; Bazzanella, Nicola; Comparelli, R.; Miotello, Antonio. - In: MATERIALS LETTERS. - ISSN 0167-577X. - STAMPA. - 174:(2016), pp. 226-229. [10.1016/j.matlet.2016.03.117]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/165158
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