Journal ArticleDOI
Raman spectroscopy in graphene
TLDR
In this article, the authors discuss the first-order and double resonance Raman scattering mechanisms in graphene, which give rise to the most prominent Raman features and give special emphasis to the possibility of using Raman spectroscopy to distinguish a monolayer from few-layer graphene stacked in the Bernal configuration.About:
This article is published in Physics Reports.The article was published on 2009-04-01. It has received 4945 citations till now. The article focuses on the topics: Bilayer graphene & Raman spectroscopy.read more
Citations
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Raman Signature and Phonon Dispersion of Atomically Thin Boron Nitride
Qiran Cai,Declan Scullion,Alexey Falin,Kenji Watanabe,Takashi Taniguchi,Ying Chen,Elton J. G. Santos,Lu Hua Li +7 more
TL;DR: In this paper, the intrinsic Raman signature and phonon dispersion of atomically thin boron nitride (BN) has been analyzed using Raman spectroscopy, and the intrinsic E2g mode of BN does not depend sensibly on the number of layers.
Journal ArticleDOI
Template-free synthesis of carbon hollow spheres and reduced graphene oxide from spent lithium-ion batteries towards efficient gas storage
TL;DR: In this paper, the facile synthesis of carbon hollow spheres (CHS) and reduced graphene oxide (rGO) from separators and graphite recovered from a spent lithium-ion battery (LIB), respectively, towards a “Waste-to-Wealth” approach was reported.
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Three-dimensional macroporous graphene-wrapped zero-valent copper nanoparticles as efficient micro-electrolysis-promoted Fenton-like catalysts for metronidazole removal.
TL;DR: The surface-bounded ·OHads formed by the reaction of the in situ generation H2O2 with 3D-GN@Cu0 was mainly responsible for the removal of metronidazole.
Journal ArticleDOI
Ultrafast sol–gel synthesis of graphene aerogel materials
Matthew B. Lim,Matthew Hu,Sandeep Manandhar,Sandeep Manandhar,Avery Sakshaug,Strong Adam,Leah A. Riley,Peter J. Pauzauskie,Peter J. Pauzauskie +8 more
TL;DR: In this paper, an acid-catalyzed sol-gel formation process in acetonitrile was reported, in which wet GO-loaded gels were realized within 2h at temperatures below 45°C. Spectroscopic and electrochemical analysis following supercritical drying and pyrolysis confirmed the reduction of the GO in the aerogels to sp2 carbon crystallites with no residual carbon-nitrogen bonds from the acetonitile or its derivatives.
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Adsorption kinetics of ammonia sensing by graphene films decorated with platinum nanoparticles
TL;DR: In this article, the adsorption and desorption curves have been analyzed using Langmuir kinetic theory for the adsoreption of ammonia, and the influence of surface inhomogeneity was analyzed by Freundlich isotherm.
References
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Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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The electronic properties of graphene
TL;DR: In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.
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Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
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Raman spectrum of graphene and graphene layers.
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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Interpretation of Raman spectra of disordered and amorphous carbon
Andrea C. Ferrari,John Robertson +1 more
TL;DR: In this paper, a model and theoretical understanding of the Raman spectra in disordered and amorphous carbon is given, and the nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensuremath{\pi} states and the long-range polarizability of the long range bonding.