Green Synthesis of Silver Nanoparticles and their Antibacterial Activity

Hailemariam Gebru; Abi Taddesse; Jyotsna Kaushal; O. P. Yadav

Green Synthesis of Silver Nanoparticles and their Antibacterial Activity

Hailemariam Gebru ¹, Abi Taddesse ¹, Jyotsna Kaushal ², O. P. Yadav ³

Affiliations
1 Chemistry Department, Haramaya University, Dire Dawa, Post Box-138, Ethiopia
2 School of Applied Science, Chitkara University, Punjab, India
3 Chemistry Department, Haramaya University, Dire Dawa, Post Box-138, India

Silver nanoparticles have been prepared by the reduction of silver ions using respectively castor oil (ricinus communis), khat (catha edulis) and sun flower (helianthus annuus) leaf extracts as reducing and stabilizing agents. The as-synthesized material was characterized by using spectroscopic, XRD and TEM techniques. As-synthesized silver nanoparticles are found to have face centered cubic structure with average crystallite size 28 nm. and showed antimicrobial activity against Escherichia coli and Staphylococcus aureus.