Nanoscale Research Letters

, 2:44

Thermal decomposition as route for silver nanoparticles

Authors

  • S. Navaladian
    • National Centre for Catalysis Research, Department of ChemistryIndian Institute of Technology Madras
    • National Centre for Catalysis Research, Department of ChemistryIndian Institute of Technology Madras
  • R. P. Viswanath
    • National Centre for Catalysis Research, Department of ChemistryIndian Institute of Technology Madras
  • T. K. Varadarajan
    • National Centre for Catalysis Research, Department of ChemistryIndian Institute of Technology Madras
Open AccessNano Express

DOI: 10.1007/s11671-006-9028-2

Cite this article as:
Navaladian, S., Viswanathan, B., Viswanath, R.P. et al. Nanoscale Res Lett (2007) 2: 44. doi:10.1007/s11671-006-9028-2

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 nanoparticlesSynthesisSilver oxalateThermal decompositionE. coli

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Acknowledgment

We thank Prof. G. Sathyanarayana, Department of Biotechnology, IIT Madras, Chennai-36, for providing the facilities to carry out antibacterial study.

Copyright information

© to the authors 2006