GREEN SYNTHESIS & CHARACTERISATION OF AMLA SEED MEDIATED GRAPHENE OXIDE - SILVER NANOCOMPOSITE - AN in vitro STUDY

 Aim: The present study centred on the green synthesis and characterization of graphene oxide, silver nanoparticles and graphene oxide-silver nanocomposite-mediated amla seed characterization.

Materials and Methods: The extract of Amla seed was prepared. In the biosynthesis of silver, graphene oxide nanoparticles, and GO-Ag nanocomposites, filtrate was used. After 24 hours of incubation, the samples were measured using UV-Visible spectrophotometry for their optimum absorbance. To obtain the synthesised silver nanoparticles, graphene oxide nanoparticles and GO-Ag nanocomposite, all the samples were then heat-dried. A high resolution transmission electron microscope was used to morphologically classify (TEM).

Results: AgNPs showed a change in colour from colourless to reddish brown, GO NPs showed a change in colour from brown to black, while GO-Ag nanocomposite changed from black to black strength. The formation of their respective nanoparticles is confirmed by this colour transition. Transmission electron microscope (TEM) showed a chain such as tubular GO NPs, spherical AgNPs & chain interspersed with spherical structures in GO-Ag nanocomposite with an average size of 50 - 100 nm, 2-50 nm, 150-200 nm respectively. The size and shape of nanoparticles were analysed.

Conclusion: Thus the green synthesis of silver nanoparticles, graphene oxide nanoparticles and GO-Ag nanocomposites from Phyllanthus emblica seed extracts was effective.

Please see the link :- https://www.ikprress.org/index.php/PCBMB/article/view/5294