INVESTIGADORES
PACIONI Natalia Lorena
artículos
Título:
Synthesis of copper nanoparticles mediated by photogenerated free radicals: catalytic role of chloride anions
Autor/es:
NATALIA L. PACIONI; ANDREA PARDOE; KATHERINE L. MCGILVRAY; MICHELLE N. CHRÉTIEN; JUAN C. SCAIANO
Revista:
Photochemical and Photobiological Sciences
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Año: 2010 vol. 9 p. 766 - 774
ISSN:
1474-905X
Resumen:
The photodecomposition of ketones by the Norrish Type I reaction, leading to the efficient release of reducing ketyl or alpha-amino alkyl radicals, provides a facile route for the synthesis of copper nanoparticles (CuNP) in both aqueous and organic solvents. The role of different counterions (especially halides) and surfactants has been used to ´tune´ the morphology and size of the nanostructures formed. In aqueous solutions chloride ions catalyze the disproportionation that mediates the Cu(I) -> Cu(0) -> CuNP conversion. This article concentrates on spherical nanoparticles and offers some insights into the routes to other nanostructures.
