02820nas a2200349   4500008004100000022001400041245014900055210006900204260000800273300001100281490000700292520170300299653001102002653001802013653002302031653002402054653003002078100001802108700001902126700001802145700001802163700002002181700001402201700001602215700001902231700001902250700002002269700001602289700001902305700002102324856012502345       2020                        eng d  a2468-519400aBioinspired synthesis of multifunctional silver nanoparticles for enhanced antimicrobial and catalytic applications with tailored SPR properties0 aBioinspired synthesis of multifunctional silver nanoparticles fo  cSEP  a1002850 v173 a<p>In the developing nanotechnology world, numerous attempts have been made to prepare the nobel metallic nanoparticles (NPs), which can improve their applicability in diverse fields. In the present work, the biosynthesis of silver (Ag) NPs has been successfully achieved through the medicinal plant extract (PE) of G. resinifera and effectively used for the catalytic and antibacterial applications. The size dependant tuneable surface plasmon resonance (SPR) properties attained through altering precursor concentrations. The X-ray and selected area diffraction pattern for Ag NPs revealed the high crystalline nature of pure Ag NPs with dominant (111) phase. The high-resolution TEM images show the nonspherical shape of NPs shifting from spherical, hexagonal to triangular, with wide particle size distribution ranging from 13 to 44 nm. Accordingly, the dual-band SPR spectrum is situated in the UV-Vis spectra validating the non-spherical shape of Ag NPs. The functional group present on the Ag NPs surface was analysed by FT-IR confirms the capping and reducing ability of methanolic PE G. resinifera. Further, the mechanism of antimicrobial activity studied using electron microscope showed the morphological changes with destructed cell walls of E. coli NCIM 2931 and S. aureus NCIM 5021 cells, when they treated with Ag NPs. The Ag NPs were more effective against S. aureus and E. coli with MIC 128 mu g/ml as compared to P. aeruginosa NCIM 5029 with MIC 256 mu g/ml. Apart from this, the reduction of toxic organic pollutant 4-NP to 4-AP within 20 min reveals the excellent catalytic activity of Ag NPs with rate constant k = 15.69 s(-1). (C) 2020 Elsevier Ltd. All rights reserved.</p>
10aAg NPs10aAntibacterial10aCatalytic activity10aGardenia resinifera10asurface plasmon resonance1 aParit, S., B.1 aKarade, V., C.1 aPatil, R., B.1 aPawar, V., N.1 aDhavale, R., P.1 aTawre, M.1 aPardesi, K.1 aJadhav, U., U.1 aDawkar, V., V.1 aTanpure, R., S.1 aKim, J., H.1 aJadhav, J., P.1 aChougale, A., D.  uhttps://library.ncl.res.in/content/bioinspired-synthesis-multifunctional-silver-nanoparticles-enhanced-antimicrobial-and