Showing papers in "Carbon in 2004"

TL;DR: In this paper, the current knowledge about the fundamental factors that control the adsorption process from aqueous phase is presented, and the carbon surface chemistry has a great influence on both electrostatic and non-electrostatic interactions.

TL;DR: In this paper, a modified Hummers' method was used to synthesize thin-film graphite oxide particles with high yield by combining a very long oxidation period with a high purity purification process.

TL;DR: In this paper, the C 1s XPS spectrum was fitted to graphitization of anthracene semi-cokes and during milling of graphite powders under different atmospheres.

TL;DR: Park et al. as discussed by the authors synthesize X-rayamorphous silver nanoparticles by the pulse sonoelectrochemical method. Carbon 2003;41(5):1079-85; Park SJ, Jang YS.

TL;DR: In this paper, a volume production of a single carbon nanofiber type which can be used in a wide range of systems beyond, but not restricted to polymer composites is discussed.

TL;DR: In this article, the fabrication aspects of carbon membranes, which can be divided into six steps: precursor selection, polymeric membrane preparation, pretreatment of the precursor, pyrolysis process, post-treatment of pyroglyzed membranes and module construction.

TL;DR: In this paper, the authors discuss the virtues and drawbacks of different hypotheses about basic carbon sites in view of experimental and theoretical results and discuss the importance of basic sites on carbon surfaces.

TL;DR: In this article, the isotherms of N2, Ar, CO2, and H2 were measured on selected activated carbons representing various pore size distributions using the DFT method.

TL;DR: In this paper, natural flake graphite was exfoliated into ex-foliated graphite via an acid intercalation procedure, and the resulting ex-graphite was a worm-like particle composed of graphite sheets with thickness in the nanometer scale.

TL;DR: In 2003, the 117 Committee of the Japan Society for the Promotion of Sciences (JSPS) specified standard procedures for the determination of lattice constants and crystallite sizes of carbon materials, especially graphitized materials, the so-called Gakushin method.

TL;DR: An ultrathin sheet-like carbon nanostructure, carbon nanosheet, has been effectively synthesized with CH4 diluted in H2 by an inductively coupled radio-frequency plasma enhanced chemical vapor deposition.

TL;DR: In this article, a mathematical model was developed to predict the VOC breakthrough characteristics on the activated carbon fiber (ACF) under dynamic conditions, including the effects of the gas-particle film mass transfer resistance, adsorbent pore diffusion and the adsorption/desorption rates within the pore.

TL;DR: In this paper, the process of chemical activation by hydroxides has been extended to different coal precursors to confirm that such a chemical activation process starts through a solid-solid reaction and continues as a solid liquid reaction.

TL;DR: This paper showed that very porous carbon materials can be synthesized by evaporative drying and pyrolysis of aqueous resorcinol-formaldehyde gels provided that the operating variables are correctly chosen.

TL;DR: In this paper, the main objective is to coat carbon multiwall nanotubes surface with TiO2 as anatase in view of photocatalytic application for these nanocomposites.

TL;DR: In this article, the authors compared N2 and CO2 adsorption at subatmospheric and high pressures at 77 and 273 K, respectively, and showed that both adsorptives give the same micropore size distribution (MPSD) for open porosity activated carbons.

TL;DR: In this article, it was shown that trans-polyacetylene originates from the diamond film and the diamond mode around 1332 cm−1 does not, while the deuterium and H-D substituted hydrocarbon sources do.

TL;DR: In this article, the authors compared the porosity of carbon fibres with KOH and NaOH and found that NaOH developed the highest value of porosity and KOH developed samples with narrower micropore size distribution.

TL;DR: In this paper, carbon nanotubes were functionalized with polyvinyl alcohol (PVA) and then embedded into PVA matrix via a wet-casting method, resulting in polymer-carbon nanocomposite films with homogeneous nanotube dispersion.

TL;DR: In this paper, the surface atomic oxygen percent increased from 6.3 to 18.5% for 10−90 min oxidations followed by a drop to 14−15% after 10−24 h oxidations.

TL;DR: In this article, composites of polycarbonate (PC) having different amounts of multiwalled carbon nanotubes (MWNT) were prepared by diluting a masterbatch of PC with 15 wt% MWNT using melt mixing in a DACA-Micro Compounder.

TL;DR: In this article, the effect of liquid-phase oxidation on the texture and surface properties of carbon nanofibers has been studied using XRD, TEM, SEM, N2-physisorption, TGA-MS, XPS and acid-base titrations.

TL;DR: A review of the production of activated carbons from waste tyres is presented in this paper, where the effects of various process parameters, particularly, temperature and heating rate, on the pyrolysis stage are reviewed.

TL;DR: In this paper, the Pt/CNT electrode for oxygen reduction reaction has been investigated by linear sweep voltammetry and the results imply that the Pt has good potential applications in proton exchange membrane fuel cells.

TL;DR: In this paper, the authors report on the protocol which standardizes measurements in TEM, SEM, TGA, Raman and UV-VIS spectrometer, which is used to compare these measurements across the board.

TL;DR: In this paper, bituminous coal-based activated carbon was modified by impregnation with melamine and heat treatment at 850 °C and the results revealed that carbons modified with nitrogen-containing species and heat-treated at 850°C have a hydrogen sulfide removal capacity exceeding more then 10 times the capacity of unmodified sample.

TL;DR: In this paper, three thermal regeneration methods have been tested: (1) pyrolysis, (2) pyroxis-gasification and (3) direct gasification, the gasifying agents being air and CO2, the results show that the pyroxys treatment does not completely eliminate the contaminant from the carbon and the recovery of the initial adsorption properties is rather limited.

TL;DR: In this article, the impact of carbon treatment on the DOM adsorption was examined by conducting isotherm experiments at a neutral pH using the modified carbons and a DOM isolated from the influent to Myrtle Beach drinking water treatment plant in South Carolina (USA).