نتایج جستجو برای: multi walled carbon nanotubes

تعداد نتایج: 746887  

2015
ALI MOGHIMI SEYED ALI HOSSEINI

A novel, simple method has been developed for the preconcentration of Cu(II) based on the adsorption of its Schiff’s cupferron complex on a multi walled carbon nanotubes (MWCNTs) onto C18 cartridge .A new technique using a solid phase extraction (SPE) cartridge with modified Schiff’s Cupferron complex on a multi walled carbon nanotubes (MWCNTs) onto C18 cartridge as sorbent was developed for th...

Behrooz Mirza Shahab Zomorodbakhsh

In this project, a three-component functionalization of carboxylated shortend multi-walled carbon nanotubes (MWNT-COOH) by Histidine derivative via amidation method have been investigated. The functionalized MWNTs were characterized by Fourier Transform Infrared spectroscopy (FT-IR), Raman spectroscopy, elemental analysis and scanning electron microscopy (SEM). 

Journal: :Chemical communications 2003
Emmanuel Flahaut Revathi Bacsa Alain Peigney Christophe Laurent

Synthesis of clean double-walled carbon nanotubes by a catalytic chemical vapour deposition (CCVD) method is reported; the catalyst is a Mg(1 - x)Co(x)O solid solution containing additions of Mo oxide; this MgO-based catalyst can be easily removed, leading to gram-scale amounts of clean carbon nanotubes, 77% of which are double-walled carbon nanotubes.

2006
S E Iyuke H C vZ Pienaar A S Abdulkareem A S Afolabi

Effects of various factors affecting the rate of Carbon Nanotubes (CNTs) produced in a Swirled Floating Catalyst Chemical Vapour Deposition (SFCCVD) reactor were investigated. This study was performed in a vertical silica tube plug flow reactor developed by Iyuke at this University. Transmission Electron Microscopy (TEM) images revealed that both Single–Walled and Multi–Walled Carbon Nanotubes ...

Journal: :The Science of the total environment 2015
Qinglin Chen Hui Wang Baoshan Yang Fei He Xuemei Han Ziheng Song

The impacts of carbon nanotubes (CNTs) including single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs) on soil microbial biomass and microbial community composition (especially on ammonium oxidizing microorganisms) have been evaluated. The first exposure of CNTs lowered the microbial biomass immediately, but the values recovered to the level of the control at the end ...

اکبری‌آدرگانی, بهروز, تقوی, محمود, ززولی, محمد علی, یزدانی چراتی, جمشید, یوسفی, ذبیح ا... ,

Background and purpose: Cadmium is a very toxic metal that have adverse effects on human health and aquatic environments even at low concentrations, therefore, efforts should be made to eliminate this metal from aquatic ecosystem. The aim of this study was to investigate the efficacy of L-cysteine functionalized single-walled carbon nanotubes in removing cadmium from aqueous environments. This ...

2012
Ali Mehrizad Mehran Aghaie Parvin Gharbani Siavoush Dastmalchi Majid Monajjemi Karim Zare

The adsorption characteristics of 4-chloro-2-nitrophenol (4C2NP) onto single-walled and multi-walled carbon nanotubes (SWCNTs and MWCNTs) from aqueous solution were investigated with respect to the changes in the contact time, pH of solution, carbon nanotubes dosage and initial 4C2NP concentration. Experimental results showed that the adsorption efficiency of 4C2NP by carbon nanotubes (both of ...

Background and purpose: Polycyclic aromatic hydrocarbons (PAHs) are one of the most common environmental pollutants that are proven to be carcinogenic and mutagenic. Doogh, is a widely consumed fermented yoghurt drink in Iran. The aim of this study was to determine the presence and concentration of PAHs in different brands of Doogh in Tehran, Iran. Materials and methods: In this study, we synt...

Journal: :Nanoscale 2014
Claudia Crescio Marco Orecchioni Cécilia Ménard-Moyon Francesco Sgarrella Proto Pippia Roberto Manetti Alberto Bianco Lucia Gemma Delogu

Spaceflights lead to dysregulation of the immune cell functionality affecting the expression of activation markers and cytokine production. Short oxidized multi-walled carbon nanotubes functionalized by 1,3-dipolar cycloaddition have been reported to activate immune cells. In this Communication we have performed surface marker assays and multiplex ELISA on primary monocytes and T cells under mi...

2012
Guo-Jie Hu Bing-Yang Cao

Heat conduction in multi-walled carbon nanotubes (MWNTs) was studied using non-equilibrium molecular dynamics simulations. This research focuses on the effects of the multi-wall structure of the MWNTs on the heat conduction. The results show that the thermal conductivity of a MWNT is almost the same as that of the corresponding single-walled carbon nanotubes (SWNTs) rather than much smaller as ...

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