Issue 22, 2014

A novel green synthesis approach for polymer nanocomposites decorated with silver nanoparticles and their antibacterial activity

Abstract

A novel, low-cost and direct green synthesis strategy was developed for the preparation of polymer composite spheres composed of silver nanoparticles (AgNPs) decorated on the polymer colloids in a raspberry-like fashion. The polymer colloids were employed as both the reductant and the substrate support. The environmentally benign reaction system consists of AgNO3, polymer spheres and an ethanol solvent, without any additional reducing agents or stabilizers. The obtained composite spheres are surprisingly stable. The size range of the formed AgNPs is from several to tens of nanometers, dependent on the reaction time, AgNO3 concentration, and the amount of polymer spheres. A four-step mechanism was proposed for the formation of AgNPs-coated polymer spheres emphasizing the role of ethanol for saturating the external surface of the polymer spheres first. These composites exhibit excellent antibacterial activity, which is dependent on both the concentration of the composite spheres and the size of coated AgNPs.

Graphical abstract: A novel green synthesis approach for polymer nanocomposites decorated with silver nanoparticles and their antibacterial activity

Article information

Article type
Paper
Submitted
17 Jul 2014
Accepted
18 Aug 2014
First published
20 Aug 2014

Analyst, 2014,139, 5793-5799

Author version available

A novel green synthesis approach for polymer nanocomposites decorated with silver nanoparticles and their antibacterial activity

G. Chen, J. Lu, C. Lam and Y. Yu, Analyst, 2014, 139, 5793 DOI: 10.1039/C4AN01301H

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