Journal of Nanoparticle Research

, Volume 12, Issue 1, pp 337–345 | Cite as

From silver nanoparticles to nanostructures through matrix chemistry

  • Omar Ayyad
  • David Muñoz-Rojas
  • Judith Oró-Solé
  • Pedro Gómez-Romero
Research Paper


Direct in situ reduction of silver ions by a biopolymer such as agar, without any other reducing nor capping agent is shown in this article to lead either to nanoparticles (typically 12(2) nm in an optimized case) or to more complex nanostructures depending on the reaction conditions used. This approach takes advantage of the porous polymer lattice acting as a template and leads to hybrid Ag–Agar materials with long-term synergic stability. Silver acts as an antibacterial agent for agar whereas the biopolymer prevents agglomeration of the inorganic nanoparticles leading to a stable nanocomposite formed by a thermoreversible biopolymer from which silver nanoparticles can eventually be recovered.


Agar gel Silver nanoparticles Hybrid nanostructures 

Supplementary material

11051_2009_9620_MOESM1_ESM.pdf (259 kb)
Supplementary material 1 (PDF 256 kb)


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Omar Ayyad
    • 1
  • David Muñoz-Rojas
    • 1
  • Judith Oró-Solé
    • 2
  • Pedro Gómez-Romero
    • 1
  1. 1.Centro de Investigación en Nanociencia y Nanotecnología (CIN2), CSIC-ICNBellaterraSpain
  2. 2.Instituto de Ciencia de Materiales de Barcelona ICMAB (CSIC)BellaterraSpain

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