Page 69 - 2019
P. 69

M.Phil
                                                                                     (Sciences)
          SYNTHESIS OF AQUEOUS STABLE WATER SOLUBLE SILVER
          NANOPARTICLES (AgNPs) BY USING EXTRACT OF ZEYLANICUM

          Ph.D. Scholar : Ms. Mamta Zalaiya
          Research Supervisor : Dr. Hasit Vaghani



                                                                                Regi. No.: 18065151002
          Abstract :
          The  synthesis  of  aqueous  stable  water  soluble  silver  nanoparticles  (AgNPs)  by  using
          extract of Zeylanicum. In this study bark were extracted with alcohol, further this extract is
          react with silver ions for the preparation of water stable silver nanoparticles . After the
          preparation  the  Colour  change  observed  from  colourless  to  dark  yellow  and  Surface
          Plasmon  Resonance  band  (UV-Vis)  420nm  which  indicates  the  synthesis  of  plant
          reduced silver nanoparticles. Characterization by Infrared Spectroscopy (IR) shows the
          presence of biomolecules as capping agents, which effect  the stability of AgNPs in the
          colloids  by  increasing  their  size.  Transition  electron  microscopy  (TEM)  confirmed  the
          presence  at  spherical  size  AgNPs  in  the  range  of  0-35nm.  The  bacterial    activity  of
          standard  antibiotics  was  significantly  increased  in  the  presence  of  AgNPs  against
          pathogenic bacteria, DMSO, S. Aureus, Staphylococcus, E-Coli, Putida and A. Niger.
          Keywords: Zeylanicum, Silver nanoparticles, SPR, TEM, Antimicrobial activity and IR



































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