نتایج جستجو برای: multi walled carbon nanotubes carboxylate mwcnts cooh

تعداد نتایج: 759321  

Journal: :Macromolecular rapid communications 2017
Lixin Xu Lingqi Huang Zhibin Ye Nan Meng Yang Shu Zhiyong Gu

In situ Pd-catalyzed cyclopentene polymerization in the presence of multi-walled carbon nanotubes (MWCNTs) is demonstrated to effectively render, on a large scale, polycyclopentene-crystal-decorated MWCNTs. Controlling the catalyst loading and/or time in the polymerization offers a convenient tuning of the polymer content and the morphology of the decorated MWCNTs. Appealingly, films made of th...

The present study was carried out to investigate the potential of carboxylate group functionalized Multi-walled carbon nanotubes (MWCNT−COOH) adsorbent for the removal of Methyl orange (MO) textile dye from aqueous solutions. The effects of pH, shaking time and temperature on adsorption capacity were studied; the contact time to obtain equilibrium at 298 ˚K was fixed at 25 min. The effect of te...

2016
Luan P. Calegari Roberto S. Dias Michelle D. de Oliveira Carine Ribeiro Pessoa André S. de Oliveira Ana F. C. S. Oliveira Cynthia C. da Silva Flavio G. Fonseca Alice F. Versiani Sérgio O. De Paula

BACKGROUND In recent times, studies have demonstrated that carbon nanotubes are good candidates for use as vehicles for transfection of exogenous material into the cells. However, there are few studies evaluating the behavior of carbon nanotubes as DNA vectors and few of these studies have used multi-walled carbon nanotubes (MWCNTs) or carboxylated MWCNTs. Thus, this study aims to assess the MW...

2016
E. O. TAHA E. C. BOROWSKI U. F. KANDIL A. EL - SAYED AWADALLAH A. A. ABOUL - ENEIN M. R. TAHA

This paper discusses the potential use of multi-walled carbon nanotubes (MWCNTs) to improve the mechanical properties of short glass fiber composites. Two methods to incorporate MWCNTs in short glass fiber composite fabrication were examined. First, Carboxylic-functionalized MWCNTs were dispersed in a silane fiber sizing material and then were allowed to bond to the surface of glass fibers. Sec...

Journal: :Advanced electronic materials 2021

Wearable flexible electronic strain sensor devices have developed rapidly in recent years due to their potential capacity detect human motion various situations. However, it still remains a big challenge fabricate sensors with high sensitivity over wide workable range. In order meet this challenge, new type of based on elastomer/carbon nanotube composite fiber is reported work. Elastomer fibers...

2015
Ross D. Milton David P. Hickey Sofiene Abdellaoui Koun Lim Fei Wu Boxuan Tan Shelley D. Minteer

Materials Unless otherwise stated, FAD-dependent glucose dehydrogenase (E.C.: 1.1.99.10, Aspergillus sp., GLDE-70-1192) was purchased from Sekisui Diagnostics (UK) and used without any further purification. For comparison experiments, GDH was also purchased from Amano Enzyme Inc., Japan (“Amano 8”, Aspergillus oryzae) and BBI Solutions USA (GLD1, Aspergillus oryzae). Bilirubin oxidase (Myrothec...

2015
Wei Chen Hongbin Shen Maria L. Auad Changzheng Huang Steven Nutt

Cross-ply laminates reinforced with basalt fibers and functionalized multi-walled carbon nanotubes (MWCNTs) were fabricated from unidirectional epoxy prepregs. MWCNTs with varied surface conditions were prepared by oxidization or esterification, and then dispersed into a DGEBA epoxy system. The dispersion of the MWCNTs in the epoxy was improved by surface modification, resulting in improved com...

Journal: :Environmental pollution 2012
Liwen Zhang Elijah J Petersen Wen Zhang Yongsheng Chen Miguel Cabrera Qingguo Huang

Carbon nanotubes are often modified to be stable in the aqueous phase by adding extensive hydrophilic surface functional groups. The stability of such CNTs in water with soil or sediment is one critical factor controlling their environmental fate. We conducted a series of experiments to quantitatively assess the association between water dispersed multi-walled carbon nanotubes (MWCNTs) and thre...

Journal: :iranian journal of analytical chemistry 2014
jahanbakhsh raoof mohammad ali karimi leila asadian-zarrinabadi mohaddeseh amiri-aref

the electrochemical oxidation and determination of tryptophan (trp) and glutathione (gsh) in the presence of catechol as a homogeneous redox in the aqueous medium were investigated at the surface of a carbon paste electrode modified with multi-walled carbon nanotube (mwcnt-cpe) using cyclic voltammetry (cv), double step potential chronoamperometry and differential pulse voltammetry (dpv) techni...

Journal: :international journal of nano dimension 0
o. moradi department of chemistry, shahre-ghods branch, islamic azad university,tehran, iran. k. zare department of chemistry, science and research branch, islamic azad university,tehran,iran. m. yari faculty of chemistry, islamshahr branch, islamic azad university, islamshahr, iran.

the interaction between some heavy metal ions such as of pb(ii), cd(ii) and cu(ii) ions from aqueous solution adsorbed by single walled carbon nanotube (swcnts) and carboxylate group functionalized single walled carbon nanotube (swcnt-cooh) surfaces were studied by atomic absorption spectroscopy. the effect of contact time, ph, initial concentration of ion, ionic strength and temperature on the...

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