Showing papers in "Carbon in 2012"
••
TL;DR: In this paper, the state-of-the-art status of the reduction of GO on both techniques and mechanisms is reviewed, where the reduction process can partially restore the structure and properties of graphene.
4,187 citations
••
TL;DR: An easy bottom-up method for the preparation of photoluminescent (PL) graphene quantum dots (GQDs) and graphene oxide (GO) has been developed by tuning the carbonization degree of citric acid and dispersing the carbonized products into alkaline solutions as mentioned in this paper.
1,487 citations
••
TL;DR: In this paper, a review of the state of the art in surface modifications and the resultant dispersibility of CNTs is provided, with particular emphasis on the quantitative characterization of surface modification and dispersions.
608 citations
••
TL;DR: In this paper, the exceptional application of polyaniline/graphene composites (PAGCs) for corrosion protection of steel was reported. And the composites display outstanding barrier properties against O2 and H2O compared with polyaniniline and polyanile/clay composites.
605 citations
••
TL;DR: In this article, two different dimensions of graphene nanoplatelets were used with flake sizes of 5 mu m and 25 mu m to investigate the influence of nanofiller size on composite properties.
556 citations
••
TL;DR: Polyamine-functionalized carbon quantum dots (CQDs) with high fluorescence quantum yield (42.5%) have been synthesized by the low temperature ( as discussed by the authors ) for the first time.
527 citations
••
TL;DR: In this article, a review of carbon materials for significant emerging applications that relate to structural self-sensing (a structural material sensing its own condition), electromagnetic interference shielding (blocking radio wave) and thermal interfacing (improving thermal contacts by using thermal interface materials).
513 citations
••
TL;DR: In this article, the reduction of graphene oxide (GO) by phytochemicals was investigated using aqueous leaf extracts of Colocasia esculenta and Mesua ferrea Linn.
501 citations
••
TL;DR: In this paper, the interaction of chemically exfoliated graphene oxide (GO) nanosheets and Escherichia coli bacteria living in mixed-acid fermentation with an anaerobic condition was investigated for different exposure times.
487 citations
••
TL;DR: In this paper, an efficient reducible graphene oxide (GO) was obtained, even if a high degree of functionalization is present Graphite with few defects was used as starting material and oxidized according to Hummer's method.
463 citations
••
TL;DR: Graphene oxide (GO) aerogels were prepared by a unidirectional freeze-drying method (UFDM), their structure was observed and their adsorption performance for Cu2+ in aqueous solution was evaluated as discussed by the authors.
••
TL;DR: In this article, a high-performance supercapacitor with high specific capacitance of 349 Fg−1 at 2mV−s−1 was obtained for the HCGS electrode in 6m KOH aqueous solution.
••
TL;DR: Graphene coating on copper (Cu) is shown to increase the resistance of the metal to electrochemical degradation by one and half orders of magnitude as discussed by the authors, which can bring paradigm changes in the development of anti-corrosion coatings using conformal ultrathin graphene films.
••
TL;DR: In this paper, the authors compared the electromagnetic interference (EMI) shielding properties of injection molded versus compression molded multi-walled carbon nanotube/polystyrene (MWCNT/PS) composites.
••
TL;DR: In this paper, reduced graphene oxide (RGO) with a layered and porous structure was synthesized by thermal exfoliation of graphite oxide using Fourier transform infrared and Raman spectroscopies, X-ray diffraction and scanning electron microscopy.
••
••
TL;DR: In this article, the authors extended the quenched solid density functional theory (QSDFT) model for characterization of mesoporous carbons using nitrogen adsorption to cylindrical and spherical pore geometries.
••
TL;DR: The surface functional groups of thermally reduced graphene nanosheets (TRG) prepared by vacuum promoted thermal expansion of graphene oxide are tailored by progressive carbonization as mentioned in this paper, and residual carbon ratios after annealing at various temperatures from 250 to 1000°C increase progressively from 443 to 848% The oxygen containing functional groups are intensively removed at higher annaling temperature.
••
TL;DR: In this paper, a strategy called flake powder metallurgy (flake PM) was used to achieve a uniform distribution of carbon nanotubes (CNTs) in CNT/Al composites and thus realize the potential of CNTs as a reinforcement.
••
TL;DR: A green approach for the reduction of graphene oxide (GO) using wild carrot root is reported in this paper, which avoids the use of toxic and environmentally harmful reducing agents commonly used in the chemical reduction of GO to obtain graphene.
••
TL;DR: In this article, a single step synthesis and a detailed study of the remarkable room temperature gas sensing and photoluminescence (PL) properties of zinc oxide (ZnO) decorated graphene oxide sheets (GrO) were presented.
••
TL;DR: In this article, a one-pot solvothermal synthesis method was developed to prepare reduced graphene oxide (RGO) supported ferrite (MFe2O4, M = Mn, Zn, Co and Ni) hybrids using graphite oxide and metal ions (Fe3+ and M2+) as starting materials.
••
TL;DR: In this article, a reduced graphene oxide (RGO)-supported platinum (Pt) catalyst was prepared by simple ethylene glycol (EG) reduction and used for hydrogenation of nitroarenes.
••
TL;DR: In this paper, an environment-friendly approach to synthesizing reduced graphene oxide (RGO) was developed by using chitosan (CS) as both a reducing and a stabilizing agent.
••
TL;DR: In this paper, a composite of polypyrrole (PPy) and graphene oxide (GO) was electrochemically synthesized by electrooxidation of 0.1 m pyrrole in aqueous solution containing appropriate amounts of GO.
••
TL;DR: Graphene sheets with different oxygen contents were prepared to functionalize the electrically insulating polymethylmethacrylate (PMMA) composites and the influences of surface chemistry of graphene on rheological, electrical and electromagnetic interference (EMI) shielding properties of its PMMA composites were investigated as mentioned in this paper.
••
TL;DR: In this article, a method to separate an existing dispersion with mean flake length of ∼1μm into fractions, each with different means of flake size, is described.
••
TL;DR: In this article, multi-walled carbon nanotube (MWCNT)/polystyrene (PS) composites were injection molded into a mold equipped with three different cavities.
••
TL;DR: In this paper, a simple approach is reported to prepare carbon-coated SnO 2 nanoparticle-graphene nanosheets (Gr-SnO 2 -C) as an anode material for lithium ion batteries.
••
TL;DR: In this article, an easy, low-cost and effective synthesis of fluorinated graphene with tunable C/F atomic ratio (RC/F) has been realized by the reaction between dispersed graphene oxide and hydrofluoric acid.