Showing papers in "Carbon in 2002"

TL;DR: The methods for the determination of various types of oxygen surface functions on carbon materials are briefly described, and their relative advantages and problems that may arise are discussed in this paper, where acidimetric titration techniques, IR spectroscopy, XPS, thermal desorption spectroscopic, and electrokinetic measurements are described.

TL;DR: In this paper, a review of the resonance Raman spectra from one isolated single wall carbon nanotube is presented, and the reasons why it is possible to observe the spectrum from only one nanotubes are given and the important structural information that is provided by single-nanotube spectroscopy.

TL;DR: In this paper, it is shown that for these applications the electrochemical properties of multiwalled and single walled (SWNTs) nanotubes are essentially dominated by their mesoporous character, and an almost linear dependence has been found between the mesopore volume and Cirr.

TL;DR: In this paper, a fusible lignin with excellent spinnability to form a fine filament was produced with a thermal pretreatment under vacuum, but at PEO levels greater than 5%, the blends could not be stabilized without the individual fibers fusing together.

TL;DR: In this article, a matrix of activated carbon fibers with three activation levels and four surface chemistry levels was used to evaluate pore structure and surface chemistry effects, and three granular activated carbons (GACs) were studied.

TL;DR: In this article, the influence of carbon-oxygen complexes on the performance of polyacrylonitrile-based activated carbon fabric capacitors was explored, and it was found that most of the oxygen functional groups created from the oxygen treatment were the carbonyl or quinone type.

TL;DR: In this paper, a styrene-divinylbenzene copolymer was used to synthesize synthetic activated carbons and the resulting carbons were characterized by elemental analysis, cation exchange capacity measurement, infrared spectroscopy, potentiometric titration with calculation of proton affinity spectra, and copper adsorption from solution.

TL;DR: In this paper, the adsorption features of activated carbon and the magnetic properties of iron oxides were combined in a composite to produce magnetic adsorbents, which can be used as adsorbent for a wide range of contaminants in water and can subsequently be removed from the medium by simple magnetic procedure.

TL;DR: In this paper, a review of the existing literature is made, with a focus on C60@SWNTs (peapods), which appear to be the most amazing and promising single-wall nanotube-based hybrid nano-materials to date.

TL;DR: Suzuki et al. as mentioned in this paper studied the structural change of activated carbon with desorption by in situ X-ray diffraction and showed that carbon graphitization-controlled microporous carbon upon adsorp-1988;26:743-5.

TL;DR: A condensed review of mechanical properties of carbon nanotubes is given in this article, with a view to extracting the fundamental elements that should allow the reader to build his own perspective of the subject.

TL;DR: In this paper, carbon nanotubes uniformly 50 nm in diameter were grown on graphite foil, and cyclic voltammetry (CV) showed that the carbon-graphite foil electrode has a high specific capacitance (115.7 F/g at a scan rate of 100 mV/s) and exhibits typical double-layer behavior.

TL;DR: In this article, N-containing activated carbon fibers have been prepared using a petroleum pitch with a low softening point and an Ncontaining resin, which can be used for spinning, stabilization, carbonization and activation.

TL;DR: In this paper, the electrical conductivity of carbon black polymer composites was found to depend on the structure of the carbon black particles and to deviate from the expectations of classical percolation theory.

TL;DR: In this paper, the physicochemical properties, surface chemical structure and some catalytic properties of a series of carbons prepared by nitric acid oxidation of an activated carbon and subsequent heat treatment under vacuum and mild temperature conditions (423 −573 K) were studied.

TL;DR: In this article, the authors have prepared activated carbons by chemical activation with K2CO3 from five kinds of nutshells: almond shell (AM), coconut shell (CN), oil palm shell (OP), pistachio shell (PT), and walnut shell (WN).

TL;DR: In this paper, the state of the art of current research on the electron field emission properties of carbon nanotube films and present recent results outlining their potential as field emitters as well as illustrating some current concerns in the research field.

TL;DR: In this article, a review of carbon nanotube doping is presented, where the dopants are intercalated in the intershell spaces of the multiwalled nanotubes, and in the case of single-walled Nanotubes either in between the individual tubes or inside the tubes.

TL;DR: In this article, an efficient purification procedure for multi-walled carbon nanotubes (MWNTs) synthesized by the floating catalyst method was discussed, which involves ultra-sonication, heat treatment in hot water, bromination, oxidation and acid treatment.

TL;DR: In this paper, a review of the chemical vapor deposition (CVD) and chemical vapor infiltration (CVI) processes of carbon materials are reviewed starting from the historical aspects and including the latest developments in the preparation of C/C composites.

TL;DR: In this paper, a spinning-like process for making fibers out of single wall carbon nanotubes is described, which is simpler and faster and potentially scalable for large-scale production.

TL;DR: In this paper, an unprecedented high thermal conductivity of 695 W/m K for polymer matrix composites was obtained, and the densities of all the composites are lower than 1.5 g/cc.

TL;DR: In this article, the effect of different variables of the activation process (KOH/anthracite ratio, pyrolysis temperature and time) on methane storage and methane delivery was analyzed.

TL;DR: In this article, the effect of an oxygen plasma treatment upon the structural and morphological properties of high-modulus carbon fibres has been studied by means of several characterisation techniques, including X-ray diffraction traces revealed that there were differences in structural parameters between the untreated fibres but no further modifications in the crystalline structure were detected after the plasma oxidation.

TL;DR: In this article, the details of the synthesis methods for preparing the ordered microporous carbons were examined, and it was found that the following two-step process, the filling of carbon into zeolite channels by impregnation of furfuryl alcohol and then chemical vapor deposition (CVD) of propylene, was indispensable for preparing carbon with highly periodic ordering.

TL;DR: In this paper, the adsorption of an odour compound common in drinking water, 2-methylisoborneol (MIB), was studied on six activated carbons in the presence of six well-characterised natural organic matter (NOM) solutions.

TL;DR: In this article, Raman spectra were taken with an UV-vis Raman system on two types of multiwalled carbon nanotubes (MWCNTs, CH4-based) and MWCNTs (CO-based), grown catalytically with CH4 and CO as the carbon sources, respectively, and their H2-adsorbing systems.

TL;DR: In this paper, a post-spinning plasticization and stretching process was used to eliminate suspected property-limiting factors in polyacrylonitrile-based carbon fibers.

TL;DR: In this paper, an oxidation protection double layered coating was applied on a carbon-carbon composite (C/C) using a simple and low cost method, which was obtained by direct reaction of liquid silicon with the C/C, promoting the formation of a 5-10 μm β-SiC layer on the composite surface.