i) 2016-Scopus Open Access (PDF)

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    BIOSYNTHESIS OF PVA ENCAPSULATED SILVER NANOPARTICLES
    (Journal of Applied Research and Technology, 2016-10-01) Sharmila, Chandran; Vinuppriya, Ravichandran; Selvi, Chandran; Jincy, Chemmanda; Bellan, Chandarshekar
    Greensynthesisofmetalnanoparticlesisanimportanttechniqueinthemethodsofeco friendlynanoparticleproduction.ThesynthesisofsilvernanoparticleswasaccomplishedusingOcimumsanctumleafextractatroomtemperature.Theseparticleswerethenencapsulatedwithpolyvinylalcohol(PVA)polymermatrix.ThepresenceofsilverwasconfirmedbydifferentcharacterizationtechniquessuchasUV–visspectroscopy,Fouriertransforminfraredspectroscopy(FTIR)andX-RayDiffraction(XRD).Scanningelectronmicroscopic(SEM)imagesofthesynthesizedpowdershowssphericalshapedsilvernanoparticlesembeddedinsponge-likepolymermatrix.TheenergydispersiveX-rayanalysisconfirmsthepresenceofelementalsilveralongwithironsignal.EnergydispersivesignalcorrespondingtoelementalironhasbeenattributedtoO.sanctumplant.ThesilvernanoparticlesinPVAmatrixthusobtainedshowshighantibacterialactivityagainstgrampositiveStaphylococcusaureus(S.aureus)andgramnegativeEscherichiacoli(E.coli)waterbornebacteria.TheinhibitionzoneagainstS.aureusandE.coliwerealsocalculated