title: Green synthesis and characterization of silver nanoparticles using Lantana camara leaf extract.
abstract: In this work, we have investigated on Lantana camara mediated silver nanoparticles (AgNPs) with different leaf extract (LE) quantity for the evaluation of efficient bactericidal activity. The AgNPs were prepared by simple, capable, eco-friendly and biosynthesis method using L. camara LE. This method allowed the synthesis of crystalline nanoparticles, which was confirmed by X-ray diffraction (XRD) and selected area electron diffraction (SAED) patterns. The X-ray photoelectron spectroscopy (XPS) analysis confirmed the formation of metallic silver and elucidates the surface state composition of AgNPs. UV-vis spectra of AgNPs and visual perception of brownish yellow color from colorless reaction mixture confirmed the AgNP formation. Involvement of functional groups of L. camara leaf extract in the reduction and capping process of nanoparticles was well displayed in Fourier transform infrared spectroscopy (FTIR). Decrement of particle size with an increment of leaf extract volume was evident in AFM, TEM images and also through a blue shift in the UV-vis spectra. The rate of formation and size of AgNPs were dependent on LE quantity. Meanwhile, these AgNPs exhibited effective antibacterial activity with the decrement of particle size against all tested bacterial cultures.
authors: Department of Physics, Sri Venkateswara University, Tirupati 517502, India. Electronic address: ajithabondu@gmail.com.
authors: B
authors: B
authors: Ajitha
authors: Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, South Korea.
authors: Y
authors: Y
authors: Ashok Kumar Reddy
authors: Department of Physics, Sri Venkateswara University, Tirupati 517502, India.
authors: P
authors: P
authors: Sreedhara Reddy
mesh_terms: D018360:Crystallography, X-Ray; D032410:Lantana / Q000737:chemistry*; D053768:Metal Nanoparticles; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties
chemical_list: D010936:Plant Extracts; D012834:Silver
keywords: Absorption; Antibacterial activity; Green synthesis; Leaf extract; Particle size