نتایج جستجو برای: Multiwall carbon nanotubes

تعداد نتایج: 286803  

Journal: :international journal of nanoscience and nanotechnology 2012
m. kolangikhah m. maghrebi k. ghazvini n. farhadian

in this study, salmonella typhimurium bacteria removal from polluted water has been investigated using multiwall carbon nanotubes arrays. experimental results reveal that the contact time, the bacterial concentration and the weight of multiwall carbon nanotubes arrays have positive significant effects on the bacteria removal efficiency. increasing the contact time and the weight of multiwall ca...

2010
SH Al-Harthi KP Revathy F Gard A Mesli AK George J Bartringer M Mamor NV Unnikrishnan

Atomic Force Microscopy complemented by Photoluminescence and Reflection High Energy Electron Diffraction has been used to study self-assembly of silver nanoparticles and multiwall carbon nanotubes on thermally decomposed GaAs (100) surfaces. It has been shown that the decomposition leads to the formation of arsenic plate-like structures. Multiwall carbon nanotubes spin coated on the decomposed...

Journal: :iranian journal of pharmaceutical research 0
sadegh akbari chermini young researchers club, branch, majlesi branch, islamic azad university, isfahan, iran hassan karimi-maleh graduate university of advanced technology, kerman, iran mohsen keyvanfard department of chemistry, majlesi branch, islamic azad university, isfahan, iran

the electrocatalytic oxidation of captopril (cap) was studied by modified carbon nanotubes paste electrode in the presence of isoproterenol (ispt) using cyclic voltammetry (cv), chronoamperometry and square wave voltammetry (swv). also, the values of catalytic rate constant (k), and electron transfer coefficient (α) for cap were calculated. the mechanism of ca electrochemical behavior at the mo...

K. Ghazvini M. Kolangikhah M. Maghrebi N. Farhadian

In this study, Salmonella Typhimurium bacteria removal from polluted water has been investigated using multiwall carbon nanotubes arrays. Experimental results reveal that the contact time, the bacterial concentration and the weight of multiwall carbon nanotubes arrays have positive significant effects on the bacteria removal efficiency. Increasing the contact time and the weight of multiwall ca...

2012
Aniela Pop Florica Manea Corina Orha Sorina Motoc Elida Ilinoiu Nicolae Vaszilcsin Joop Schoonman

The aim of this study was to prepare three types of multiwall carbon nanotubes (CNT)-based composite electrodes and to modify their surface by copper electrodeposition for nonenzymatic oxidation and determination of glucose from aqueous solution. Copper-decorated multiwall carbon nanotubes composite electrode (Cu/CNT-epoxy) exhibited the highest sensitivity to glucose determination.

Journal: :iranian journal of pharmaceutical research 0
mahmoud jafari department of physics, k. n. toosi university of technology, tehran, iran danial heidari department of physics, k. n. toosi university of technology, tehran, iran pedram ebrahimnejad -department of pharmaceutics, faculty of pharmacy, mazandaran university of medical sciences, sari, iran

multifunctional nanomaterials showed graet advantages in drug delivery. folic acid (fa) binding protein, a glycosyl phosphatidyl inositol anchored cell surface receptor for folate, is overexpressed in several human tumors, whereas it is highly restricted in normal tissues. therefore, in this study, fa, polyethylene glycol (peg), and fe3o4 nanoparticles multifunctionalized short multiwall carbon...

Journal: :Physical review letters 2002
María J López Angel Rubio Julio A Alonso Serge Lefrant Karine Méténier Sylvie Bonnamy

Bundles of single-wall carbon nanotubes (SWCNTs) coalesce forming multiwall carbon nanotubes (MWCNTs), containing from two to six nested tubes, under thermal treatment at high temperatures [(2200-2400) degrees C]. This structural transformation is confirmed by extensive molecular dynamics (MD) simulations. The simulations suggest a "patching-and-tearing" mechanism for the single-wall-to-multiwa...

2005
L. E. Murr K. M. Garza K. F. Soto A. Carrasco T. G. Powell D. A. Ramirez P. A. Guerrero D. A. Lopez J. Venzor

Nanotechnology and nanomaterials have become the new frontier world-wide over the past few years and prospects for the production and novel uses of large quantities of carbon nanotubes in particular are becoming an increasing reality. Correspondingly, the potential health risks for these and other nanoparticulate materials have been of considerable concern. Toxicological studies, while sparse, ...

Journal: Journal of Nanoanalysis 2016
Javad Azizian Malak Hekmati,

Bacteria can grow in different materials that are in close contact with humans, foods, etc., so, it is very important to control this matter in order to prevent risk of infections. Antimicrobial resistance (AMR) threatens the effective prevention and treatment of an ever-increasing range of infections caused by bacteria, parasites, viruses and fungi. Multiwall carbon nanotubes (MWNTs) have inte...

Journal: :Physical review letters 2002
A De Martino R Egger K Hallberg C A Balseiro

A theoretical description of electron spin resonance (ESR) in 1D interacting metals is given, with primary emphasis on carbon nanotubes. The spin-orbit coupling is derived, and the resulting ESR spectrum is analyzed using a low-energy field theory. Drastic differences in the ESR spectra of single-wall and multiwall nanotubes are found. For single-wall tubes, the predicted double peak spectrum i...

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