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Showing papers in "Carbon in 2012"


Journal ArticleDOI
01 Aug 2012-Carbon
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


Journal ArticleDOI
01 Oct 2012-Carbon
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


Journal ArticleDOI
01 Jan 2012-Carbon
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


Journal ArticleDOI
01 Nov 2012-Carbon
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


Journal ArticleDOI
01 Dec 2012-Carbon
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


Journal ArticleDOI
01 Jul 2012-Carbon
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


Journal ArticleDOI
01 Aug 2012-Carbon
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


Journal ArticleDOI
01 Nov 2012-Carbon
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


Journal ArticleDOI
01 Apr 2012-Carbon
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


Journal ArticleDOI
01 Aug 2012-Carbon
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


Journal ArticleDOI
Xue Mi1, Guanbo Huang1, Weisong Xie1, Wei Wang1, Yu Liu1, Jianping Gao1 
01 Nov 2012-Carbon
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.

Journal ArticleDOI
Jun Yan1, Junpeng Liu1, Zhuangjun Fan1, Tong Wei1, Lijun Zhang1 
01 May 2012-Carbon
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.

Journal ArticleDOI
01 Sep 2012-Carbon
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.

Journal ArticleDOI
01 Nov 2012-Carbon
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.

Journal ArticleDOI
01 May 2012-Carbon
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.


Journal ArticleDOI
01 Apr 2012-Carbon
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.

Journal ArticleDOI
01 Aug 2012-Carbon
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.

Journal ArticleDOI
Lin Jiang1, Zhiqiang Li1, Genlian Fan1, Linlin Cao1, Di Zhang1 
01 Apr 2012-Carbon
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.

Journal ArticleDOI
01 Mar 2012-Carbon
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.

Journal ArticleDOI
01 Feb 2012-Carbon
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.

Journal ArticleDOI
Song Bai1, Xiaoping Shen1, Xin Zhong1, Yang Liu1, Guoxing Zhu1, Xiang Xu1, Kangmin Chen1 
01 May 2012-Carbon
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.

Journal ArticleDOI
01 Feb 2012-Carbon
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.

Journal ArticleDOI
Yongqin Guo1, Xiying Sun1, Yu Liu1, Wei Wang1, Haixia Qiu1, Jianping Gao1 
01 Jun 2012-Carbon
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.

Journal ArticleDOI
01 May 2012-Carbon
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.

Journal ArticleDOI
01 Nov 2012-Carbon
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.

Journal ArticleDOI
01 Feb 2012-Carbon
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.

Journal ArticleDOI
01 Apr 2012-Carbon
TL;DR: In this article, multi-walled carbon nanotube (MWCNT)/polystyrene (PS) composites were injection molded into a mold equipped with three different cavities.

Journal ArticleDOI
01 Apr 2012-Carbon
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.

Journal ArticleDOI
01 Dec 2012-Carbon
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.