J. Mater. Sci. Technol. ›› 2015, Vol. 31 ›› Issue (11): 1125-1132.DOI: 10.1016/j.jmst.2015.08.005

• Orginal Article • Previous Articles     Next Articles

Characterisation, Luminescence and Antibacterial Properties of Stable AgNPs Synthesised from AgCl by Precipitation Method

Arockiasamy Ajaypraveenkumar1, Johnson Henry1, Kannusamy Mohanraj1, Ganesan Sivakumar2, Sankaran Umamaheswari3   

  1. 1 Department of Physics, Manonmaniam Sundaranar University, Tirunelveli 627 012, Tamil Nadu, India; 2 Centralised Instrumentation and Service Laboratory, Department of Physics, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India; 3 Department of Biotechnology, Manonmaniam Sundaranar University, Tirunelveli 627 012, Tamil Nadu, India
  • Received:2015-01-29
  • Contact: * Corresponding author. Ph.D.; Tel.: +91 9788083079; Fax: +91 462 2334363/2322973.E-mail address: kmohanraj.msu@gmail.com; mohanraj@msuniv.ac.in (K. Mohanraj).
  • Supported by:
    The authors are thankful to the DST-FIST and UGC-SAP, New Delhi for providing financial support to the Department of Physics, Manonmaniam Sundaranar University and National Centre for Nanosciences and Nanotechnology (NCNSNT), University of Madras for providing FESEM and EDAX facilities. The authors are thankful to Ms. M. Uma Vanitha, Research Scholar, Microbiology Laboratory, Department of Biotechnology, Manonmaniam Sundaranar University for her help in testing antibacterial properties

Abstract: Silver nanoparticles (AgNPs) were synthesised using equimolar concentrations of reducing agent vitamin C and AgCl precursor by simple precipitation method. The synthesised AgNPs were characterised by X-ray diffraction (XRD), UV-Visible, photoluminescence and field emission scanning electron microscopy (FESEM) analysis. The formation of AgNPs was confirmed by the typical surface plasmon resonance band at 426 nm. The presence of elemental silver and pure crystalline face centre cubic (fcc) structure was confirmed by energy dispersive X-ray analysis and XRD analysis, respectively. The FESEM images showed the formation of spherical AgNPs for lower concentrations (0.1 and 0.3 mol/L) while spike and flower shaped particles were formed for higher concentration. Photoluminescence characteristic band was observed with no shift at 390 nm indicating the stable nature of AgNPs. The antibacterial property of the AgNPs was tested against gram negative bacteria Pseudomonas aeruginosa by using Cissus quadrangular as a control and the result showed that vitamin C reduced AgNPs have good antibacterial activity.

Key words: Silver nanoparticles, Precipitation, Rietveld refinement, Photoluminescence spectroscopy, Optical properties