Journal of Nanoparticle Research

, Volume 10, Supplement 1, pp 97–106 | Cite as

Silver, gold and the corresponding core shell nanoparticles: synthesis and characterization

  • Fraser Douglas
  • Ramon Yañez
  • Josep Ros
  • Sergio Marín
  • Alfredo de la  Escosura-Muñiz
  • Salvador Alegret
  • Arben MerkoçiEmail author
Research Paper


Simple strategies for producing silver and gold nanoparticles (AgNP and AuNP) along with the corresponding core shell nanoparticles (Au–Ag and Ag–Au) by reduction of the metal salts AgBF4 and HAuCl4 by NaBH4 in water will be presented. The morphologies of the obtained nanoparticles are determined by the order of addition of reactants. The obtained NPs, with sizes in the range 3–40 nm, are characterized by transmission electronic microscopy (TEM) and UV–Vis absorption spectroscopy, so as to evaluate their qualities. Moreover, a direct electrochemical detection protocol based on a cyclic voltammetry in water solution that involves the use of glassy carbon electrode is also applied to characterize the prepared NPs. The developed NPs and the related electroanalytical method seem to be with interest for future sensing and biosensing applications including DNA sensors and immunosensors.


Gold nanoparticles Silver nanoparticles Au–Ag nanoparticles Ag–Au nanoparticles Cyclic voltammetry Colloids 



This work is supported by Projects: MAT2005-03553 and Consolider-Ingenio 2010, Project CSD2006-00012. CTQ2007-63913

Supplementary material

11051_2008_9374_MOESM1_ESM.doc (1.2 mb)
(DOC 1225 kb)


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Fraser Douglas
    • 1
  • Ramon Yañez
    • 1
  • Josep Ros
    • 1
  • Sergio Marín
    • 2
    • 3
  • Alfredo de la  Escosura-Muñiz
    • 2
  • Salvador Alegret
    • 3
  • Arben Merkoçi
    • 2
    • 3
    Email author
  1. 1.Unitat de Química Inorgànica, Departament de QuímicaUniversitat Autònoma de BarcelonaBellaterraSpain
  2. 2.Nanobioelectronics & Biosensors GroupInstitut Català de NanotecnologiaBellaterraSpain
  3. 3.Group of Sensors & Biosensors, Departament de QuímicaUniversitat Autònoma de BarcelonaBellaterraSpain

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