Nanobiotechnology Lab, Department of Biotechnology, S.G.B. Amravati University, Amravati 444 602, Maharashtra, India
Adv. Mater. Lett., 2015, 6 (4), pp 334-341
DOI: 10.5185/amlett.2015.5737
Publication Date (Web): Mar 21, 2015
Copyright © IAAM-VBRI Press
E-mail: mkrai123@rediffmail.com
Bimetallic nanoparticles have emerged up as advanced nanomaterials due to the synergism between two metallic nanoparticles in core-shell or alloy arrangement. Moreover, bioinspired synthesis of nanoparticles is an evergreen approach of nanobiosciences. In this experiment, we have fabricated silver, gold and silver (core) - gold (shell) bimetallic nanoparticles using leaf extract of Catharanthus roseus Linn. by sequential reduction technique. The sequentially reduced silver-gold nanoparticles in core-shell arrangement were detected by shift in the surface plasmon resonance of nanoparticles from 423 nm to 526 nm with the aid of UV-Visible spectrophotometer. Nanoparticle tracking analysis confirmed the mean particle size for all the nanoparticles within the range 11 to 65 nm. X-Ray diffraction analysis revealed Bragg’s reflections denoting face cubic centered crystalline nature of all the synthesized nanoparticles. Transmission electron microscopy showed that silver and silver-gold nanoparticles are quite polydispersed and spherical in shape while anisotropic Au nanoparticles were also observed. These phytofabricated Ag-Au nanoparticles have been evaluated with enhanced antibacterial and anticandidal potential over their monometallic counterparts with particular reference to some pathogenic bacteria and Candida sp. The maximum lethality of bimetallic nanoparticles was observed for Escherichia coli followed by Pseudomonas aeruginosa, while Candida parapsilosis was found to be the least susceptible organism for the silver-gold nanoparticles.
Bimetallic nanoparticles, Catharanthus roseus Linn, core-shell arrangement,phytofabrication,sequential reduction.
Advanced Materials Research and Innovation Priorities for Accomplishing the Sustainable Development Goals
Contemporary Advances in Humidity Sensing Materials, Methods, and Performances
Roles of the Debye Length and Skin Depth in the Characterization of Space Charge Interactions in Semiconductor Nanoparticles
Antifungal Activity of Iron-gold and Cobalt-gold co-doped ZnO Nanoparticles
Adsorption and Thermodynamic Parameters of Activated Carbon-Diazepam Systems in Simulated Gastric Fluid
Synthesis, Impedance and Current-Voltage Spectroscopic Characterization of Novel Gadolinium Titanate Nano Structures
Removal of Toxic Dyes from Industrial Waste Water using Chitosan Grafted Itaconic Acid Nanocomposites
Structural, Optical and dielectric properties of Sr doped LaVO4
Design, 3D Development and Finite Element Analysis of Cylindrical Mesh Cage Bioimplants from Biometals
Advancements in Materials Technology for Accomplishing Sustainable Development Goals
A Review for Luminescence Property of Materials, Its Detection and Probabilities for Embedding of Luminescence with MEMS Technology
A Review on Low-Cost Adsorbents for Cadmium Pollutant Removal from Industrial Effluents
Study of Applications of Radial Basis Function Network in Forecasting
Simulation of LPG Pressure Vessel under Fire Engulfment
Strength Analysis of Friction Stir Welding (FSW) Joint Under Minimize Rotation Speed of FSW Tool
Formation of Pure In2O3 pallets for OLED Application
Study of Soil Nitrogen Level and Splitting on Nutrient Uptake around the Industries of Chhattisgarh, India
Copyright ©2010-2021 VBRI Press
Full Article