http://www.cnr.it/ontology/cnr/individuo/prodotto/ID39133
Photocatalytic Synthesis of Silver Nanoparticles Stabilized by TiO2 Nanorods: A Semiconductor/Metal Nanocomposite in Homogeneous Nonpolar Solution (Articolo in rivista)
- Type
- Label
- Photocatalytic Synthesis of Silver Nanoparticles Stabilized by TiO2 Nanorods: A Semiconductor/Metal Nanocomposite in Homogeneous Nonpolar Solution (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Alternative label
P. Davide Cozzoli, Roberto Comparelli, Elisabetta Fanizza, M. Lucia Curri, Angela Agostiano, and Daniele Laub (2004)
Photocatalytic Synthesis of Silver Nanoparticles Stabilized by TiO2 Nanorods: A Semiconductor/Metal Nanocomposite in Homogeneous Nonpolar Solution
in Journal of the American Chemical Society (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- P. Davide Cozzoli, Roberto Comparelli, Elisabetta Fanizza, M. Lucia Curri, Angela Agostiano, and Daniele Laub (literal)
- Pagina inizio
- Pagina fine
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- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Contribution from the Dipartimento di Chimica, UniVersita` di Bari, Via Orabona 4, 70126 Bari,
Italy, CNR-Istituto per i Processi Chimico Fisici (IPCF), sez. Bari, Via Orabona 4, 70126 Bari,
Italy, and EPFL-CIME-Centre Interdisciplinaire de Microscopie Electronique, Batiment MXC,
1015 Lausanne, Switzerland (literal)
- Titolo
- Photocatalytic Synthesis of Silver Nanoparticles Stabilized by TiO2 Nanorods: A Semiconductor/Metal Nanocomposite in Homogeneous Nonpolar Solution (literal)
- Abstract
- A novel colloidal approach toward semiconductor/metal nanocomposites is presented. Organicsoluble
anatase TiO2 nanorods are used for the first time to stabilize Ag nanoparticles in optically clear
nonpolar solutions in the absence of specific ligands for silver. Metallic silver is generated upon UV
illumination of deaerated TiO2 solutions containing AgNO3. The Ag nanoparticles can be obtained in different
size-morphological regimes as a function of the irradiation time, due to light-induced photofragmentation
and ripening processes. A mechanism for the colloidal stabilization of the silver nanoparticles is tentatively
suggested, which regards the TiO2 nanorods as inorganic stabilizers, thus acting in the same manner as
conventional surfactant molecules. The proposed photocatalytic approach offers a convenient method for
producing TiO2/Ag nanocomposite systems with a certain control over the metal particle size without the
use of surfactants and/or additives. Stable colloidal TiO2-nanorod-stabilized Ag nanoparticles can be
potentially available for a number of applications that require clean metal surfaces, such as homogeneous
organic catalysis, photocatalysis, and sensing devices. (literal)
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- Autore CNR
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