Research Paper

Journal of Nanoparticle Research

, Volume 12, Issue 1, pp 337-345

From silver nanoparticles to nanostructures through matrix chemistry

  • Omar AyyadAffiliated withCentro de Investigación en Nanociencia y Nanotecnología (CIN2), CSIC-ICN
  • , David Muñoz-RojasAffiliated withCentro de Investigación en Nanociencia y Nanotecnología (CIN2), CSIC-ICN
  • , Judith Oró-SoléAffiliated withInstituto de Ciencia de Materiales de Barcelona ICMAB (CSIC)
  • , Pedro Gómez-RomeroAffiliated withCentro de Investigación en Nanociencia y Nanotecnología (CIN2), CSIC-ICN Email author 

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Abstract

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.

Keywords

Agar gel Silver nanoparticles Hybrid nanostructures