Biosynthesis Of High Concentration, Stable Aqueous Dispersions Of Silver Nanoparticles Using Citrus Limon extract

Bandita Mohapatra1, Reena Kaintura1, Jaspal Singh1,2, Sini Kuriakose1,2, Satyabrata Mohapatra1,2* 

1Multifunctional Nanomaterials Laboratory, School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Dwarka, New Delhi 110078, India

2School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Dwarka, New Delhi 110078, India

Adv. Mater. Lett., 2015, 6 (3), pp 228-234

DOI: 10.5185/amlett.2015.5731

Publication Date (Web): Feb 22, 2015

E-mail: smiuac@gmail.com

Abstract


Stable aqueous dispersions with high concentration of silver nanoparticles were synthesized by a facile and green synthetic route by treating silver ions with aqueous Citrus limon extract, used as a reducing and capping agent. The formation and growth of silver nanoparticles, prepared by this simple and convenient method, was monitored using UV-visible absorption spectroscopy. The effects of Ag concentration, Citrus limon extract concentration, in-situ and ex-situ pH variations upon NaOH addition on the structural, optical and plasmonic properties of the synthesized Ag nanoparticles were investigated. X-ray diffraction studies revealed the formation of Ag nanoparticles, whose morphology was studied using atomic force microscopy. UV-visible absorption studies revealed surface plasmon resonance (SPR) peak around 465 nm, confirming the presence of Ag nanoparticles. The SPR peak blue shifted along with significant enhancement in intensity with increase in Ag concentration and pH, due to the growth and increased aggregation of Ag nanoparticles. We have shown that addition of NaOH is a key to rapid biosynthesis of stable aqueous dispersions of high concentration of silver nanoparticles. This green synthetic route provides faster synthesis of silver nanoparticles with improved colloidal stability, which can be used in foods, cosmetics and biomedical applications.

Keywords

Biosynthesis, silver nanoparticles, surface plasmon resonance.

Current Issue

Advanced Materials Congress Celebrating 10th Years of Establishment


Secure Management of Networked Batteries for Building Integrated Photovoltaics (BIPV) Systems  


The Cause of 100-year Low Carbonated Concrete of the Bridge 


Organic Montmorillonite Intercalated Nano-composites Prevent Post-Surgical Associated Infections


Morphology/tensile Performance Relationship for LLDPE/PP Double Gated Injected Blends


Preparation and Characterization of Nickel Ferrite Nanoparticles via Sol-gel Method


Nitrogen-doped Diamond Nanowire Gas Sensor for the Detection of Methane


Manufacture of Functional Open-cell Al Foams with Recycled Al Scraps using NaCl Ball Space Holder 


Vilsmeier-Haack Transformations under Non Classical Conditions


New Application of Highly Vesicular Basalt from Jabel Isbil Volcano (Dhamar-Rada'a Volcanic Field), Yemen


An Assessment of Tribological Characteristics under different Operating Condition


Functional Bi Coatings as A Perspective Material for Radiation Shields Production against Electron Radiation


Effects of Silica Modified NiFe2O4 on the Dielectric and Electrical Properties of NiFe2O4 filled Poly (methyl methacrylate) Composites


Previous issues
The Journey of a Decade to Advancing Materials Are the Electrospun Polymers Polymeric Fibers? Mechanical and Thermal Properties of Composite Material and Insulation for a Single Walled Tank for Cryogenic Liquids Prediction of Long-Term Behavior for Dynamically Loaded TPU Investigation of Doped Titanium Dioxide in Anatase Phase. Study ab initio using Density Functional Theory Comparison between Single Al2O3 or HfO2 Single Dielectric Layers and their Nanolaminated Systems Preparation of Stable and Optimized Antibody-gold Nanoparticle Conjugates for Point of Care Test Immunoassays Resonance-Based Temperature Sensors using a Wafer Level Vacuum Packaged SOI MEMS Process Integrated System Based on the Hall Sensors Incorporating Compensation of the Distortions The Efficacy of Cinnamomum Tamala as a Potential Antimicrobial Substance against the Multi-Drug Resistant Enterococcus Faecalis from Clinical Isolates The Effect of Complexing Reagent on Structural, Electrical and Optical Properties of CuS Thin Film Laser Cladding of Fluorapatite Nanopowders on Ti6Al4V Preparation and Evaluation of Sulfonate Polyethylene Glycol Borate Ester as a Modifier of Functional Properties of Complex Petroleum Lithium Grease

Upcoming Congress

Knowledge Experience at Sea TM