Artículos de revistas
One-Step/One-Pot Decoration of Oxide Microparticleswith Silver Nanoparticles
Fecha
2014-05Registro en:
Perez, Manuel Alejo; Macagno, Vicente Antonio; Coronado, Eduardo A.; Yacamán, Miguel José; Mariscal, Marcelo; Oliva, Fabiana Yolanda; et al.; One-Step/One-Pot Decoration of Oxide Microparticleswith Silver Nanoparticles; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 428; 5-2014; 32-35
0021-9797
CONICET Digital
CONICET
Autor
Macchione, Micaela Alejandra
Douglas Gallardo, Oscar Alejandro
Pérez, Luis Alberto
Passarelli, Nicolás
Moiraghi, Raquel
Spitale, Ana
Bahena, Daniel
Oliva, Fabiana Yolanda
Mariscal, Marcelo
Yacamán, Miguel José
Coronado, Eduardo A.
Macagno, Vicente Antonio
Perez, Manuel Alejo
Resumen
Hypothesis:Heterogeneous nucleation of silver oxide (Ag2O) onto oxide microparticles (OMPs) followedby spontaneous thermal decomposition produce nanostructures made of OMPs decorated with silvernanoparticles (OMP|AgNPs).Experiments:Colloidal chemistry methods have been used to produce the decoration of OMPs with silvernanoparticles (AgNPs), by carrying out the Ag2O precipitation/thermal decomposition. The process is dri-ven in water enriched acetone medium containing NaOH, NH3, AgNO3and SiO2MPs as substrate. Opticaland morphological properties of OMP|AgNPs were characterized by using STEM, EDS, HRTEM and Ramanspectroscopy.Findings:A new synthetic method to decorate OMPs (TiO2, SiO2) with metallic AgNPs in a single step/singlepot reaction is proven effective to produce OMP|AgNPs either in aqueous or water enriched media.