Tannic acid: A natural source to tailor nano crystalline silver particles of different morphologies Tannic acid: A natural source to tailor nano crystalline silver particles of different morphologies
1Nanotechnology and Drug Delivery Research Lab, Department of Chemistry, University of Delhi, Delhi 110007, India
2Maharaja Surajmal Institute of Pharmacy, Janak Puri, New Delhi 110058, India
Adv. Mater. Lett., 2015, 6 (12), pp 1043-1049
Publication Date (Web): Nov 24, 2015
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In this work we have successfully prepared spherical and chain type silver nanoparticles of excellent size’s homogeneity, reproducibility and stability using tannic acid. The synthesized nanometallic structures were characterized for their shape, size, thermal stability and crystalline nature. The mechanism for the formation of Ag NPs and shape evolution of the chain structure has been vividly explained. Further, these NPs were found to exhibit significant antibacterial activity against gram negative Escherichia coli bacteria but to different extend indicating the influence of particles morphology on their antibacterial behaviours.
Bio-synthesis, tannic acid, silver nanoparticles, spherical chain, antibacterial activity.