High-yield production of graphene by liquid-phase exfoliation of graphite
Yenny Hernandez,Valeria Nicolosi,Mustafa Lotya,Fiona M. Blighe,Zhenyu Sun,Sukanta De,I.T. McGovern,Brendan Holland,Michele T. Byrne,Yurii K. Gun'ko,John J. Boland,Peter Niraj,Georg S. Duesberg,Satheesh Krishnamurthy,Robbie Goodhue,John L. Hutchison,Vittorio Scardaci,Andrea C. Ferrari,Jonathan N. Coleman +18 more
TLDR
Graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone are demonstrated.Abstract:
Fully exploiting the properties of graphene will require a method for the mass production of this remarkable material. Two main routes are possible: large-scale growth or large-scale exfoliation. Here, we demonstrate graphene dispersions with concentrations up to approximately 0.01 mg ml(-1), produced by dispersion and exfoliation of graphite in organic solvents such as N-methyl-pyrrolidone. This is possible because the energy required to exfoliate graphene is balanced by the solvent-graphene interaction for solvents whose surface energies match that of graphene. We confirm the presence of individual graphene sheets by Raman spectroscopy, transmission electron microscopy and electron diffraction. Our method results in a monolayer yield of approximately 1 wt%, which could potentially be improved to 7-12 wt% with further processing. The absence of defects or oxides is confirmed by X-ray photoelectron, infrared and Raman spectroscopies. We are able to produce semi-transparent conducting films and conducting composites. Solution processing of graphene opens up a range of potential large-area applications, from device and sensor fabrication to liquid-phase chemistry.read more
Citations
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Noncovalent Functionalization of Graphene and Graphene Oxide for Energy Materials, Biosensing, Catalytic, and Biomedical Applications
Vasilios Georgakilas,Jitendra N. Tiwari,K. Christian Kemp,Jason A. Perman,Athanasios B. Bourlinos,Kwang S. Kim,Radek Zboril +6 more
TL;DR: This Review focuses on noncovalent functionalization of graphene and graphene oxide with various species involving biomolecules, polymers, drugs, metals and metal oxide-based nanoparticles, quantum dots, magnetic nanostructures, other carbon allotropes, and graphene analogues.
Journal ArticleDOI
Graphene based new energy materials
Yiqing Sun,Qiong Wu,Gaoquan Shi +2 more
TL;DR: Graphene, a one-atom layer of graphite, possesses a unique two-dimensional (2D) structure, high conductivity and charge carrier mobility, huge specific surface area, high transparency and great mechanical strength as mentioned in this paper.
Journal ArticleDOI
Metal–organic framework nanosheets in polymer composite materials for gas separation
Tania Rodenas,Ignacio Luz,Gonzalo Prieto,Beatriz Seoane,Hozanna Miro,Avelino Corma,Freek Kapteijn,Francesc X. Llabrés i Xamena,Jorge Gascon +8 more
TL;DR: A bottom-up synthesis strategy for dispersible copper 1,4-benzenedicarboxylate MOF lamellae of micrometer lateral dimensions and nanometer thickness is presented and opens the door to ultrathin MOF-polymer composites for various applications.
Journal ArticleDOI
Evolution of Electrical, Chemical, and Structural Properties of Transparent and Conducting Chemically Derived Graphene Thin Films
Cecilia Mattevi,Goki Eda,Stefano Agnoli,Steve Miller,K. Andre Mkhoyan,Ozgur Celik,Daniel Mastrogiovanni,Gaetano Granozzi,Eric Garfunkel,Manishkumar Chhowalla +9 more
TL;DR: A detailed description of the electronic properties, chemical state, and structure of uniform single and few-layered graphene oxide (GO) thin films at different stages of reduction is reported in this paper.
Journal ArticleDOI
Single‐Layer Semiconducting Nanosheets: High‐Yield Preparation and Device Fabrication
Zhiyuan Zeng,Zongyou Yin,Xiao Huang,Hai Li,Qiyuan He,Gang Lu,Freddy Yin Chiang Boey,Hua Zhang +7 more
TL;DR: The common feature of these materials is that the bulk material forms are layeredstructures with strong covalent bonding in each layer and weak van der Waals forces between the layers.
References
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Journal ArticleDOI
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Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
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Journal ArticleDOI
Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide
Sasha Stankovich,Dmitriy A. Dikin,Richard D. Piner,Kevin A. Kohlhaas,Alfred Kleinhammes,Yuanyuan Jia,Yue Wu,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
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