Author
D. Mendhulkar
Bio: D. Mendhulkar is an academic researcher. The author has contributed to research in topics: Nanoparticle & Silver nanoparticle. The author has an hindex of 1, co-authored 1 publications receiving 211 citations.
Topics: Nanoparticle, Silver nanoparticle
Papers
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TL;DR: In this paper, the synthesis of silver nanoparticles using Gliricidia sepium was studied. But the results showed that the nanoparticles were polydispersed and ranged in size from 10-50 nm with an average size of 27 nm, the particles were predominantly spherical.
Abstract: Development of biologically inspired experimental processes for the synthesis of nanoparticles is evolving into an important branch of nanotechnology. The present study deals with the synthesis of silver nanoparticles using Gliricidia sepium. On challenging, leaf broth of Gliricidia sepium and aqueous AgNO3 (1mM) solution changed from yellowish green to brown, the final color appeared gradually with time. The entire reaction mixture turned to brown color after 12 hrs of reaction, and exhibits an absorbance peak around 440 nm characteristic of Ag nanoparticle, its surface plasmon absorbance and due to different shapes of lone spherical or roughly spheri- cal Ag nanoparticles. Transmission electron microscopy (TEM) analysis showed silver nanoparticles which are polydispersed and ranged in size from 10-50 nm with an average size of 27 nm, the particles were predominantly spherical. X-ray diffraction (XRD) studies reveals a number of Braggs reflections that may be indexed on the basis of the face centered cubic structure of silver nanoparticle and Fourier Transform Infrared Spectroscopy (FTIR) analysis, which showed that silver nanoparticles are capped. Phytosynthesized silver nanoparti- cles show the antibacterial activity against the Staphylococcus aureus ATCC 6538P, Escherichia coli ATCC 8739, Pseudomonas aerugi- nosa ATCC 9027 and Klebsiella pneumoniae (clinical isolate). The approach of phytosynthesis appears to be cost efficient eco-friendly and easy alternative to conventional methods of silver nanoparticles synthesis.
226 citations
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TL;DR: Most of the plants used in metal nanoparticle synthesis are shown in this article, and the advantages of using plant and plant-derived materials for biosynthesis of metal nanoparticles have interested researchers to investigate mechanisms of metal ions uptake and bioreduction by plants, and to understand the possible mechanism of nanoparticle formation in plants.
2,424 citations
TL;DR: In this paper, the synthesis of nanostructured zinc oxide nanoparticles by both chemical and biological method was reported, and the results showed that the particles obtained were poly dispersed and the average size ranged from 25 to 40nm.
758 citations
TL;DR: The results suggest that the synthesized AgNPs act as an effective antibacterial agent.
610 citations
TL;DR: In this article, the authors used hot water olive leaf extracts (OLE) as reducing and stabilizing agent for antibacterial activity against drug resistant bacterial isolates and found that the AgNPs at 0.03-0.07 mg/ml concentration significantly inhibited bacterial growth against multi-drug resistant Staphylococcus aureus (S. aUREus ), Pseudomonas aeruginosa (P. aerUGinosa ), and Escherichia coli ( E. coli ).
596 citations
TL;DR: Present review focuses on microbes or plants based green synthesis of Ag, Au, Cu, Fe, Pd, Ru, PbS, CdS, CuO, CeO 2, Fe3O4, TiO2, and ZnO NPs and their potential applications.
Abstract: Nanotechnology is a new and emerging technology with wealth of applications. It involves the synthesis and application of materials having one of the dimensions in the range of 1-100 nm. A wide variety of physico-chemical approaches are being used these days for the synthesis of nanoparticles (NPs). However, biogenic reduction of metal precursors to produce corresponding NPs is eco-friendly, less expensive, free of chemical contaminants for medical and biological applications where purity of NPs is of major concern. Biogenic reduction is a "Bottom Up" approach similar to chemical reduction where a reducing agent is replaced by extract of a natural products with inherent stabilizing, growth terminating and capping properties. Furthermore, the nature of biological entities in different concentrations in combination with reducing organic agents influence the size and shape of NPs. Present review focuses on microbes or plants based green synthesis of Ag, Au, Cu, Fe, Pd, Ru, PbS, CdS, CuO, CeO2, Fe3O4, TiO2, and ZnO NPs and their potential applications.
529 citations