Nanocomposites Materials Generated from a Spray
Título del documento: Nanocomposites Materials Generated from a Spray
Revue: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000403105
ISSN: 0103-9733
Autores: 1
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Instituciones: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Quimica, Araraquara, Sao Paulo. Brasil
2Universite de Toulouse III (Paul Sabatier), Toulouse, Haute-Garonne. Francia
Año:
Periodo: Abr
Volumen: 39
Número: 1A
Paginación: 176-181
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico
Resumen en inglés The Spray Pyrolysis (SP) process has been employed at moderate temperature (470-970 K) for the synthesis of micro- and nano-particles of hydrated metal oxides and of related nanocomposites. It has been applied to iron nitrate solutions, without or with the addition of sodium chloride as a flux. After removal of the flux, nanocomposites of ferrihydrite (5Fe2O3,9H2O) / hematite (α- Fe2O3) / and an amorphous Fe2O3 are obtained, with surface area 140 m2 /g. It has been applied also to a sol of Aluminum-tri-sec-butoxide, without or with activation by europium or terbium ions. Boehmite (γ-AlOOH) powders are synthesized at 470 K, with surface area equal to 180 m2 /g. Transition alumina ( γ-Al2O3) are synthesized at 970 K. Nanocomposites made by reaction of the boehmite or γ-Al2O3 particles with the amino acid asparagin (ASN) have been prepared and characterized. The luminescence of the Eu3+ or Tb3+ doped nanocomposites has been investigated: they can be considered as bio-compatible luminescent nanoparticles
Disciplinas: Física y astronomía
Palabras clave: Física de materia condensada,
Nanotecnología,
Nanopartículas,
Nanocompuestos,
Rocío pirolítico
Keyword: Physics and astronomy,
Condensed matter physics,
Nanotechnology,
Nanoparticles,
Nanocomposites,
Spray pyrolysis
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