Revue: | Brazilian journal of physics |
Base de datos: | PERIÓDICA |
Número de sistema: | 000403098 |
ISSN: | 0103-9733 |
Autores: | Bozon-Verduraz, Francois1 Fievet, Fernand1 Piquemal, Jean-Yves1 Brayner, Roberta1 El Kabouss, Kaoutar1 Soumare, Yaghoub1 Viau, Guillaume2 Shafeev, Georges3 |
Instituciones: | 1Universite Paris 7 (Denis Diderot), París. Francia 2Institut National des Sciences Appliquees, Laboratoire de Physique et Chimie des Nano-objets, Toulouse, Haute-Garonne. Francia 3Russian Academy of Sciences, A.M. Prokhorov General Physics Institute, Moscú. Rusia |
Año: | 2009 |
Periodo: | Abr |
Volumen: | 39 |
Número: | 1A |
Paginación: | 134-140 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Analítico |
Resumen en inglés | One step (direct) and multisteps synthesis methods of metal and oxide nanoparticles are presented including both bottom-up and top-down procedures. Chemical methods involving the polyol process allows to get either isotropic or anisotropic nanoparticles. Nanowires, nanorods and dumbells can be generated either by heterogeneous nucleation or by using a template (mesoporous silica). Top-down procedures are illustrated by laser irradiation of immersed bulk targets (Ag, Au) which generates self-organized nanostructures or colloidal solutions. Laser irradiation of these colloidal solutions modifies the size distribution and the shape of nanoparticles. Bimetallic nanoparticles are generated from mixtures of monometallic colloidal solutions. Surface-mediated methods involving a host support and an invited phase are also presented. They lead to the formation of metal or oxide clusters and nanoparticles. The speciation of these entities is correlated with the observed catalytic performances |
Disciplinas: | Física y astronomía, Ingeniería |
Palabras clave: | Física atómica y molecular, Ingeniería de materiales, Nanotecnología, Nanopartículas, Metales |
Keyword: | Physics and astronomy, Engineering, Atomic and molecular physics, Materials engineering, Nanotechnology, Nanoparticles, Metals |
Texte intégral: | Texto completo (Ver PDF) |