نتایج جستجو برای: silver nanoparticle

تعداد نتایج: 74001  

Journal: :Chemical communications 2008
Peter A G Cormack Aaron Hernandez-Santana R Arun Prasath Fiona McKenzie Duncan Graham W Ewen Smith

A new class of SERRS-active macromolecule designed to protect silver nanoparticle surfaces against salt corrosion whilst retaining colloidal stability of the particles is reported.

Journal: :Chemical communications 2012
Mathias Hanisch Mirza Mačković Nicola Taccardi Erdmann Spiecker Robin N Klupp Taylor

Here we report that silver nanoparticle necklaces can be readily formed by treatment of colloidal silica with ammoniacal silver complex solution followed by washing, deposition and ageing. We investigate the morphology of the produced materials and elucidate the key variables that influence this promising new approach to one-dimensional nanostructuring.

Journal: :Chemical communications 2008
Bogdan Zdyrko Mark K Kinnan George Chumanov Igor Luzinov

We report a straightforward method for preparation of freestanding transparent polymer film containing 2D silver nanoparticle arrays and possessing polarization-sensitive optical properties.

The use of less hazardous chemicals or natural material in place of toxic chemical for the formation of metal nanoparticle is known as green synthesis. The present paper deals with greener approach for the synthesis of silver (Ag) nanoparticles. The Saraca asoca plant leaves extract solution was used for the silver nanoparticles. Confirmation of Ag nanoparticles has been done using var...

Journal: :vaccine research 0
vahid asgary department of rabies, virology research group, pasteur institute of iran, tehran, iran, department of immunology, school of medicine, tehran university of medical sciences, tehran, iran omid kord mafi department of biotechnology, payam-e-nour university, east branch, tehran, iran mohammad sadeq khosravy department of laboratory of animal sciences, pasteur institute of iran, tehran, iran alireza janani department of rabies, virology research group, pasteur institute of iran, tehran, iran nabiollah namvar asl department of laboratory of animal sciences, pasteur institute of iran, tehran, iran rouzbeh bashar department of rabies, virology research group, pasteur institute of iran, tehran, iran

background: nanoparticles have been considered as promising tools because of their high applicability. recently, nanoparticles have been evaluated for their ability to increase the immune responses as adjuvants. silver-nanoparticles (agnps) have shown promising results in enhancing th-2 immune responses and to produce potent neutralizing antibodies. neutralizing antibodies are considered as the...

The use of less hazardous chemicals or natural material in place of toxic chemical for the formation of metal nanoparticle is known as green synthesis. The present paper deals with greener approach for the synthesis of silver (Ag) nanoparticles. The Saraca asoca plant leaves extract solution was used for the silver nanoparticles. Confirmation of Ag nanoparticles has been done using var...

Journal: :The journal of physical chemistry. B 2005
Nianjun Yang Koichi Aoki

Spectroscopic, chemical, thermal, and voltammetric analyses on six kinds of alkylcarboxylate-stabilized silver nanoparticles 4.7 nm in diameter were carried out with an aim to reveal the effect of alkylcarboxylates on the optical, thermal, geometric, and electrochemical properties of the nanoparticles. These nanoparticles are composed of silver atoms and silver alkylcarboxylates having even num...

2017
Fouzia Tanvir Atif Yaqub Shazia Tanvir William A Anderson

The aim of this study was to test the effect of two different morphologies of silver nanoparticles, spheres, and prisms, on their antibacterial properties when coated with poly-L-arginine (poly-Arg) to enhance the interactions with cells. Silver nanoparticle solutions were characterized by UV-visible spectroscopy, transmission electron microscopy, dynamic light scattering, zeta potential, as we...

Journal: :international journal of nano dimension 0
s. sedaghat department of chemistry, malard branch, islamic azad university, malard , iran.

silver-polyaniline (ag-pani) nanocomposites were prepared by in-situ oxidative polymerization of aniline monomer in sodium bis(2-ethylhexyl) sulfosuccinate (aot) solution as an emulsifier. the synthesis of silver-polyaniline nanocomposites was investigated as a function of several parameters such as aniline concentration, concentration of emulsifier (aot), concentration of oxidation agent and c...

Journal: :Antimicrobial agents and chemotherapy 2011
Liyi Huang Tianhong Dai Yi Xuan George P Tegos Michael R Hamblin

Chitosan and nanoparticle silver are both materials with demonstrated antimicrobial properties and have been proposed singly or in combination as constituents of antimicrobial burn dressings. Here, we show that they combine synergistically to inhibit the in vitro growth of Gram-positive methicillin-resistant Staphylococcus aureus (MRSA) and Gram-negative bacteria (Pseudomonas aeruginosa, Proteu...

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