Nano Express

Nanoscale Research Letters

, 2:44

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Thermal decomposition as route for silver nanoparticles

  • S. NavaladianAffiliated withNational Centre for Catalysis Research, Department of Chemistry, Indian Institute of Technology Madras
  • , B. ViswanathanAffiliated withNational Centre for Catalysis Research, Department of Chemistry, Indian Institute of Technology Madras Email author 
  • , R. P. ViswanathAffiliated withNational Centre for Catalysis Research, Department of Chemistry, Indian Institute of Technology Madras
  • , T. K. VaradarajanAffiliated withNational Centre for Catalysis Research, Department of Chemistry, Indian Institute of Technology Madras

Abstract

Single crystalline silver nanoparticles have been synthesized by thermal decomposition of silver oxalate in water and in ethylene glycol. Polyvinyl alcohol (PVA) was employed as a capping agent. The particles were spherical in shape with size below 10 nm. The chemical reduction of silver oxalate by PVA was also observed. Increase of the polymer concentration led to a decrease in the size of Ag particles. Ag nanoparticle was not formed in the absence of PVA. Antibacterial activity of the Ag colloid was studied by disc diffusion method.

Keywords

Ag nanoparticles Synthesis Silver oxalate Thermal decomposition E. coli