in this paper, the chemical functionalization of carboxylate multi-walled carbon nanotubes by methyl (triphenyl phosphoranylidene) acetate have been investigated. phosphorus ylides are important compound in organic chemistry. at first, methyl (triphenyl phosphoranylidene) acetate, synthesized from salt metod in two steps: the formation of the phosphonium salt and the deprotonation of the latter...

The separation of two different types of multi-walled carbon nanotubes is studied in a dielectrophoresis-based microchannel system in seven different solvents as the suspending medium.  A simple model was developed to predict the behavior of the multi-walled carbon nanotubes in the above mentioned system. Then, the equations of motion for the multi-walled carbon nanotubes in that system were in...

Carbon nanotubes focus the attention of many scientists because of their huge potential of industrial applications, but there is a paucity of information on the toxicological properties of this material. The aim of this experimental study was to characterize the biological reactivity of purified multi-wall carbon nanotubes in the rat lung and in vitro. Multi-wall carbon nanotubes (CNT) or groun...

palladium nanoparticles supported on multi-walled carbon nanotubes (pd/mwcnts) have been synthesized using a modified polyol reduction method and its performance in methanol oxidation reactions has evaluated. the morphology of palladium on mwcnts was characterized by scanning electron microscopy (sem) and transmission electron microscopy (tem). the catalytic performance of synthesized catalyst ...

background and purpose: textile effluents are very difficult to treat satisfactorily due to high variations in their compositions. strong color is one of the main characteristics of textile effluent and, if not eliminated, it can cause serious problems to the environment. in the present study, multi-walled carbon nanotubes (mwcnts) were used as an adsorbent for the removal of reactive red-120 (...

Composites consisting of different quantities of carbon nanotubes and nanofibrils in a poly(methyl methacrylate) (PMMA) matrix have been prepared using a polymer extrusion technique. The nanotubes or nanofibrils were first dispersed over the polymer matrix particles using a dry powder mixing method. The final composite specimens contained well-dispersed and aligned nanofibrils and nanotubes. Th...

Carbon nanotubes provide a new class of molecular wires that display new and exciting mesoscopic transport properties. We provide a detailed theoretical description for transport in multi-wall nanotubes, where both disorder and strong interactions are important. The interplay of both aspects leads to a particularly effective intrinsic Coulomb blockade for tunneling. The relation to recent exper...