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This article investigates the influence of oxygen-containing groups on the properties of CNTs and CNT-supported catalyst. The carbon nanotubes were treated using H2O2 solution and by annealing in Ar atmosphere (800°C) in order to introduce and to eliminate oxygen surface functionalities, respectively. Their properties of CNTs were investigated using TGA, XRD, BET, and TPD-NH3. The reducibility of...
A new azoferrocene derivative N-4,4’-azodianiline (ferrocenyl Schiff base) (ADAF, [Fe(cp)(azcp)]), was synthesized by reaction of ferrocene carbaldehyde and 4,4’-azodianiline in n-hexane. Then, a novel multiwalled carbon nanotubes/ carbon-paste modified electrode using ADAF was fabricated for the electrocatalytic determination of glutathione (GSH) in hemolysed erythrocyte. The measurements were carried...
A multi-walled carbon nanotubes (MWNTs) film modified glassy carbon electrode (GCE) has been fabricated and showed potent electrocatalytic activity toward the electrochemical oxidation of salbutamol sulfate in phosphate buffer solution (pH=7.4). The linear dependence between the oxidation peak current of salbutamol sulfate and its concentration was observed in the range from 5.0 - 25 mumol/L with...
Carbon nanotubes currently attract intense attention for various biomedical applications due to their large surface areas, high electrical conductivity, and excellent strength. However, these attractive properties of nanomaterials are also the main factors for their potential toxicity. The present study was undertaken to determine the toxicity exhibited by multi- walled carbon nanotubes (MWCNT) in...
Multi-wall carbon nanotubes (MWNTs) have been synthesized by catalytic chemical vapor deposition of acetylene over Fe loaded mesoporous silica. The raw product contains the aerogel support, catalyst particles, and a small amount of amorphous carbon (mostly as a coating on the catalyst nanoparticles) as impurities. Before these materials can be used in many applications, these impurities must be removed...
A facile approach to the surface oxidation of multi-walled carbon nanotubes (MWCNTs) is presented using oxidation solution to decorating MWCNTs, sonication to promote this effect and increase the population density of surface oxide groups. The sonication short time for MWCNTs oxidation /functionalization is desirable for minimizing structural damage to the MWCNTs that could lead to changes in their...
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