Nanoparticles of metal and metal oxides: some peculiar synthesis methods, size and shape control, application to catalysts preparation
Título del documento: Nanoparticles of metal and metal oxides: some peculiar synthesis methods, size and shape control, application to catalysts preparation
Revista: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000403098
ISSN: 0103-9733
Autores: 1
1
1
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3
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:
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
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