TL;DR: In this article, the effect of oxidation on the structural integrity of multiwalled carbon nanotubes through acidic (nitric acid and a mixture of sulfuric acid and hydrogen peroxide) and basic (ammonium hydroxide/hydrogen peroxide), agents has been studied.
TL;DR: In this paper, chemically modified graphene sheets are obtained through solvothermal reduction of colloidal dispersions of graphite oxide in various solvents, where reduction occurs at relatively low temperatures (120-200°C) and self-generated pressure in the sealed reaction vessel and the reducing power of the solvent influences the extent of reduction.
TL;DR: In this article, wood origin activated carbon was oxidized and then treated with melamine and urea followed by carbonization at 950 degrees C in an inert atmosphere, and the modified carbons revealed significantly enhanced capacitances in 1 M H2SO4 reaching 300 F/g and the capacitance retention ratio is 86% at the current load of 1 A/g.
TL;DR: In this article, the chemical structure of phosphorus species in two series of polymer-based and fruit-stone-based carbons obtained by phosphoric acid activation at 400-1000°C were investigated by XPS and solid state 31 P-NMR and 13 C -NMR.
TL;DR: Cheng et al. as mentioned in this paper proposed a Chinese Academics, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenya 110016, Peoples R China;[email protected]
TL;DR: In this article, a chemically functionalized exfoliated graphite-filled epoxy composites were prepared with load levels from 2% to 20% by weight, and wide-angle X-ray diffraction revealed a rhombohedral carbon structure in the filler.
TL;DR: In this article, the authors focused on the imaging mechanism of tapping mode AFM (TAFM) when measuring graphene and few layer graphene (FLG) flakes on silicon oxide surfaces, and showed that at certain measurement parameters significant deviations can be introduced in the measured thickness of FLG flakes.
TL;DR: In this paper, the effects of CO 2 treatment on the pore structures of carbon CS15A6 were discussed and the results showed that CO 2 activation leads to better capacitive performances.
TL;DR: In this article, a systematic, time-dependent, surface-sensitive study has been conducted to study the mechanism of sulfuric/nitric acid oxidation of graphene-containing materials, such as carbon fibers and carbon nanotubes.
TL;DR: In this paper, carbon nanotubes were easily coated with a reactive biopolymer, polydopamine (Pdop), by dispersing them in a dopamine solution and mildly stirring at room temperature.
TL;DR: A simple approach to decorate carbon nanotube (CNT) with silver nanoparticles (Ag-NPs) was developed to enhance the electrical conductivity of CNT.
TL;DR: In this article, the analysis of the G′ band profile in the Raman spectra of nanographites with different degrees of stacking order is presented, and the relative volumes of 3D and 2D graphite phases present in the samples can be estimated from their Raman Spectra.
TL;DR: In this article, the growth of carbon nanotubes by a plasma assisted catalytic chemical vapor deposition was investigated using cobalt, nickel and iron catalyst particles of different sizes, and it was shown that the growth mode switches from "tip-growth" for large particles (>>5nm) to "base growth" for smaller ones (
TL;DR: In this article, a well-dispersed epoxy/single-walled carbon nanotube (epoxy/SWCNT) composites were prepared by oxidization and functionalization of the SWCNT surfaces using polyamidoamine generation-0 (PAMAM-0) dendrimer.
TL;DR: In this article, carboxylated multiwalled carbon nanotubes (MWCNTs) dispersed with sodium dodecyl sulfate were used for reinforcement of natural rubber.
TL;DR: Sulfonated ordered mesoporous carbons (OMC) have been synthesized by covalent attachment of sulfonic acid-containing aryl radicals on the surface of mesopore carbons.
TL;DR: In this article, a woven carbon fiber (CF) laminae is functionalized with carbon nanotubes (CNTs) to test the hypothesis that growing CNTs on CF would enhance the properties of polymeric carbon composites.
TL;DR: The physicico-chemical properties of the obtained carbon nanotubes, such as the C/N ratio or the nitrogen type, were related to the synthesis parameters as mentioned in this paper, which can be explained by the thermodynamic stabilities of the different metal-carbides, leading to a "pulsating" growth in the case of Fe as opposed to a more continuous growth in Co or Ni.
TL;DR: In this article, a numerical study is proposed to investigate and predict the thermal performance of graphite foams infiltrated with phase change materials, PCMs, for space and terrestrial energy storage systems.
TL;DR: In this article, a density functional theory for carbon nanoribbons with zigzag edges containing one substitutional nitrogen atom per 154 carbon atoms has been proposed, and it has been shown that the formation energies depend on the nitrogen doping site, as do the electrical properties.
TL;DR: In this paper, a composite material consisting of carbon nanotubes (CNTs) combined with cellulose paper has been developed, which is capable of shielding electromagnetic interference over the tested range of 15-40 GHz, particularly in range of 30-40GHz, with absorption as the essential shielding mechanism.
TL;DR: In this paper, the ageing process of double-layer capacitors was investigated using infrared, Raman, and photoelectron spectroscopy, and nitrogen porosimetry, and it was shown that oxygen, hydrogen, nitrogen, and fluorine, which originate from trace water and from the electrolyte, can covalently attach to the electrodes and form various chemical groups.
TL;DR: In this article, the adsorption mechanism of nickel at a molecular level was attributed to chemical interaction between nickel and the surface functional groups of MWCNTs and surface adsorbed SDBS.
TL;DR: In this paper, the transverse and longitudinal coefficients of thermal expansion (CTE) of carbon fibers are measured at very high temperatures (up to 2500 K) and the results show that the mean transverse CTE varies from 5.6 −10 −6 ǫ K −1 to 2.1 −6 −6 K − 1 −1 depending on fiber structural properties.
TL;DR: In this article, mesoporous phenolic resin-based carbons were prepared by soft-templating synthesis and activated by KOH, which resulted in a substantial increase of microporosity with simultaneous preservation of mesopural structure.
TL;DR: In this paper, the Raman spectra of a number of carbide derived carbons (CDCs) synthesised from TiC at 700, 800, 900, 1000, 1100 and 1200°C and from VC, WC, TaC, NbC, HfC and ZrC made at 1000°C have been recorded using laser excitation wavelengths of 514 and 785.
TL;DR: In this paper, the authors investigated the hydrogen sorption properties of MgH2 and carbon materials, including graphite, activated carbon, multi-walled carbon nanotubes (MWCNTs), carbon nanofibres (CNFs) and activated carbon fibres.
TL;DR: In this paper, a clean and simple wet chemical process using dilute aqueous ozone (O3) solution with or without ultrasound (US) was used to functionalize single-walled carbon nanotubes (SWCNTs).
TL;DR: The fabrication of buckypaper from unfunctionalised multi-walled carbon nanotubes (MWCNTs) without the aid of surfactants or surface modification techniques is accomplished through a novel and quick frit compression method as discussed by the authors.
TL;DR: In this paper, a novel application of multiwall carbon nanotubes (MWCNT) for biosensor use is presented, where β-Cyclodextrin (β-CD) as molecular receptor and MWCNT as enhancer of electron transfer are integrated in a dopamine (DA) electrochemical sensor system.