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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Covalently attached graphene–ionic liquid hybrid nanomaterials: synthesis, characterization and tribological application
Rashi Gusain,Harshal P. Mungse,Niranjan Kumar,T. R. Ravindran,Ramanathaswamy Pandian,Hiroyuki Sugimura,Om P. Khatri +6 more
TL;DR: In this article, three variable Gr-IL hybrid nanomaterials, containing bis(salicylato)borate (BScB), oleate (OL), and hexafluorophosphate (PF6) anions, are synthesized to control their surface properties.
Journal ArticleDOI
Challenges in Liquid-Phase Exfoliation, Processing, and Assembly of Pristine Graphene
TL;DR: The challenges and opportunities of using pristine graphene as nanofillers in polymer composites, as well as as building blocks for macrostructure assemblies are summarized in the context of large-scale production.
Journal ArticleDOI
Ink-based 3D printing technologies for graphene-based materials: a review
TL;DR: In this paper, a review of the recent advances of ink-based 3D printed graphene-based materials is presented, including the basic properties and preparation methods of graphene, some promising inkbased 3DP, such as inkjet printing technology, direct-write assembly, and fused deposition modeling and their characteristics.
Journal ArticleDOI
Unconventional Thermoelectric Materials for Energy Harvesting and Sensing Applications.
Matteo Massetti,Fei Jiao,Fei Jiao,Andrew J. Ferguson,Dan Zhao,Kosala Wijeratne,Alois Würger,Jeffrey L. Blackburn,Xavier Crispin,Simone Fabiano +9 more
TL;DR: The basic principle of the thermoelectric effects when the particles transporting the electric charge are electrons, ions, and redox molecules is presented and the conceptual differences between the three thermodiffusion phenomena are described.
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Hollow Capsules of Reduced Graphene Oxide Nanosheets Assembled on a Sacrificial Colloidal Particle
TL;DR: In this article, the authors introduce a novel and versatile approach for preparing hollow multilayer capsules of graphene oxide nanosheets and incorporate a new functionality such as gold nanoparticles into a hollow graphene capsule.
References
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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
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.
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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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