نتایج جستجو برای: multi walled carbon nanotubes

تعداد نتایج: 746887  

2002
Shigeo Maruyama Ryosuke Kojima Yuhei Miyauchi Shohei Chiashi Masamichi Kohno

By using alcohol as the carbon source, a new simple catalytic chemical vapor deposition technique to synthesize high-purity single-walled carbon nanotubes at low temperature is demonstrated. Because of the etching effect of decomposed OH radical attacking carbon atoms with a dangling bond, impurities such as amorphous carbon, multi-walled carbon nanotubes, metal particles and carbon nanoparticl...

2014
Lilantha Samaranayake Nilwala Kottegoda Veranja Karunaratne

Carbon nanotubes (CNT) are produced from a rare variety of natural vein graphite (VG) distinctive to Sri Lanka using electric arc discharge. Electric arc-discharge produces both single walled and multi walled nanotubes. The products are characterized using high resolution electron microscopy and Raman spectroscopy for verification and validation. Keywords—CNT, vein graphite, arc discharge, SWCNT

Journal: :nanomedicine research journal 0
ehsan zayerzadeh department of biology, faculty of food industry and agriculture, standard research institute, karaj, iran azadeh fardipour department of quality control, razi vaccine and serum research institute, karaj, iran meisam shabanian faculty of chemistry and petrochemical engineering, standard research institute, karaj,iran mohammad kazem koohi department of basic sciences, faculty of veterinary medicine, university of tehran, tehran, iran

objective(s): carbon nanotubes have unique mechanical, electrical, and thermal properties, with potential different applications in nanomedicine, electronics, and other industries. these new applications of carbon nanotubes in different industries lead to the increased exposure risk of nanomaterials to human. up to now, all aspects of carbon nanotubes toxicity are not completely clear following...

2017
Hasti Amiri Kenneth L Shepard Colin Nuckolls Raúl Hernández Sánchez

Here we report on the ion conductance through individual, small diameter single-walled carbon nanotubes. We find that they are mimics of ion channels found in natural systems. We explore the factors governing the ion selectivity and permeation through single-walled carbon nanotubes by considering an electrostatic mechanism built around a simplified version of the Gouy-Chapman theory. We find th...

Journal: :Nanotechnology 2012
Minoo J Moghaddam Wenrong Yang Barbara Bojarski Thomas R Gengenbach Mei Gao Hadi Zareie Maxine J McCall

A facile, two-step method for chemically attaching single-stranded DNA to graphitic surfaces, represented here by carbon nanotubes, is reported. In the first step, an azide-containing compound, N-5-azido-nitrobenzoyloxy succinimide (ANB-NOS), is used to form photo-adducts on the graphitic surfaces in a solid-state photochemical reaction, resulting in active ester groups being oriented for the s...

2010
Claudia Backes Andreas Hirsch

Within the past decades extensive research has shed light into the structure, reactivity and properties of carbon nanotubes (CNTs) [1–3]. This new carbon allotrope is theoretically constructed by rolling up a graphene sheet into a cylinder with the hexagonal rings joining seamlessly. Commonly, carbon nanotubes are classified into single-walled carbon nanotubes (SWCNTs) which consist of one cyli...

Journal: :The journal of physical chemistry. B 2007
Zhengding Su Kenneth Mui Elisabeth Daub Tong Leung John Honek

Peptides selected from phage-displayed libraries have been found to exhibit high-affinity binding to carbon nanotubes including single-walled carbon nanotubes (SWNTs), multi-walled carbon nanotubes, and single-walled carbon nanohorns. One unique feature of these peptides is that their amino acid sequences are rich in tryptophan and histidine residues. The aim of this study was to investigate th...

F. Hamidi Malayeri H. Ghourchian M. R. Sohrabi

Toluidine Blue O (TBO) is a cationic dye which is extensively used in the industries. In the present paper a simple and efficient wet chemical method was introduced for removal of TBO from waste aqueous solution. Magnetic multi-walled carbon nanotubes were synthesized using commercially available multi-wall carbon nanotubes and magnetic iron oxide nanoparticles which were examined for removal o...

2018
Diana S. Raie Eisha Mhatre Doaa S. El-Desouki Ahmed Labena Gamal El-Ghannam Laila A. Farahat Tareq Youssef Wolfgang Fritzsche Ákos T. Kovács

The present work was targeted to design a surface against cell seeding and adhering of bacteria, Bacillus subtilis. A multi-walled carbon nanotube/titanium dioxide nano-power was produced via simple mixing of carbon nanotube and titanium dioxide nanoparticles during the sol-gel process followed by heat treatment. Successfully, quercetin was immobilized on the nanocomposite via physical adsorpti...

Background: Natural organic matters (NOMs) have the main role in formation of trihalomethanes. These compounds are in natural water sources due to biological activities. In the presented study, adsorption and separation of humic acid as an index of natural organic matters using multi-walled carbon nanotubes is evaluated. Methods: The experiments were carried out in bath adsorption reactors wit...

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