One-step/one-pot decoration of oxide microparticles with silver nanoparticles

Micaela A. Macchione, Oscar A. Douglas-Gallardo, Luis A. Pérez, Nicolás Passarelli, Raquel Moiraghi, Ana Spitale, Daniel Bahena, Fabiana Y. Oliva, Marcelo M. Mariscal, Miguel José-Yacamán, Eduardo A. Coronado, Vicente A. Macagno, Manuel A. Pérez

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Hypothesis: Heterogeneous nucleation of silver oxide (Ag2O) onto oxide microparticles (OMPs) followed by spontaneous thermal decomposition produce nanostructures made of OMPs decorated with silver nanoparticles (OMP|AgNPs). Experiments: Colloidal chemistry methods have been used to produce the decoration of OMPs with silver nanoparticles (AgNPs), by carrying out the Ag2O precipitation/thermal decomposition. The process is driven in water enriched acetone medium containing NaOH, NH3, AgNO3 and SiO2MPs as substrate. Optical and morphological properties of OMP|AgNPs were characterized by using STEM, EDS, HRTEM and Raman spectroscopy. Findings: A new synthetic method to decorate OMPs (TiO2, SiO2) with metallic AgNPs in a single step/single pot reaction is proven effective to produce OMP|AgNPs either in aqueous or water enriched media.

Original languageEnglish (US)
Pages (from-to)32-35
Number of pages4
JournalJournal of Colloid and Interface Science
StatePublished - Aug 15 2014
Externally publishedYes


  • Metal-oxide adhesion
  • Nanostructures
  • Silver oxide
  • Synthesis
  • Thermal decomposition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry


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