Graphene’s cousin: the present and future of graphane

Zhou, Changyu; Chen, Sihao; Lou, Jianzhong; Wang, Jihu; Yang, Qiujie; Liu, Chuanrong; Huang, Dapeng; Zhu, Tonghe

doi:10.1186/1556-276x-9-26

Cited by 79 publications

(72 citation statements)

References 94 publications

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“…Thus, it can be a potential candidate for mass production. 31,32,45 Figure 3 shows synthesis methods of graphene and their derivatives along with their applications. Graphene sheets are classified according to the synthesis techniques used as per the available data of patents filed, published, and granted.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…Doping can be done by various techniques. 31 Graphene can be organochemically modified by different approaches 25,28,29,45 such as the reduction of GO, covalent modification of graphene, noncovalent functionalization of graphene, nucleophilic substitution, diazonium salt coupling, and adsorption of metal. The reduction of GO is carried in a stabilized medium; e.g., KOH-treated GO can be modified with hydroxyl, epoxy, or carboxylic acid groups.…”

Section: Chemical Modification Of Surfacementioning

confidence: 99%

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Graphite to Graphene via Graphene Oxide: An Overview on Synthesis, Properties, and Applications

Hansora

Shimpi

Mishra

2015

JOM

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This work represents a state-of-the-art technique developed for the preparation of graphene from graphite-metal electrodes by the arc-discharge method carried out in a continuous flow of water. Because of continuous arcing of graphite-metal electrodes, the graphene sheets were observed in water with uniformity and little damage. These nanosheets were subjected to various purification steps such as acid treatment, oxidation, water washing, centrifugation, and drying. The pure graphene sheets were analyzed using Raman spectrophotometry, x-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), and tunneling electron microscopy (TEM). Peaks of Raman spectra were recorded at (1300-1400 cm À1 ) and (1500-1600 cm À1 ) for weak D-band and strong G-band, respectively. The XRD pattern showed 85.6% crystallinity of pure graphite, whereas pure graphene was 66.4% crystalline. TEM and FE-SEM micrographs revealed that graphene sheets were overlapped to each other and layer-by-layer formation was also observed. Beside this research work, we also reviewed recent developments of graphene and related nanomaterials along with their preparations, properties, functionalizations, and potential applications.

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Section: Synthesis Methodsmentioning

confidence: 99%

Section: Chemical Modification Of Surfacementioning

confidence: 99%

Graphite to Graphene via Graphene Oxide: An Overview on Synthesis, Properties, and Applications

Hansora

Shimpi

Mishra

2015

JOM

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“…Graphane has emerged in recent years as a new twodimensional material with promising properties [50][51][52]. However, the effective masses in this material have received little attention.…”

Section: Graphanementioning

confidence: 99%

“…The grafting of one hydrogen per carbon atom on graphene to produce graphane can be done following many different patterns [52]. However, we focus here on the most stable one: the so-called "chair" configuration, where two hydrogen atoms attached to neighboring carbon atoms are located on opposite sides of the graphene sheet.…”

Section: Graphanementioning

confidence: 99%

Precise effective masses from density functional perturbation theory

et al. 2016

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The knowledge of effective masses is a key ingredient to analyze numerous properties of semiconductors, like carrier mobilities, (magneto)transport properties, or band extrema characteristics yielding carrier densities and density of states. Currently, these masses are usually calculated using finite-difference estimation of density functional theory (DFT) electronic band curvatures. However, finite differences require an additional convergence study and are prone to numerical noise. Moreover, the concept of effective mass breaks down at degenerate band extrema. We assess the former limitation by developing a method that allows to obtain the Hessian of DFT bands directly, using density functional perturbation theory. Then, we solve the latter issue by adapting the concept of "transport equivalent effective mass" to the k·p framework. The numerical noise inherent to finite-difference methods is thus eliminated, along with the associated convergence study. The resulting method is ther... The knowledge of effective masses is a key ingredient to analyze numerous properties of semiconductors, like carrier mobilities, (magneto)transport properties, or band extrema characteristics yielding carrier densities and density of states. Currently, these masses are usually calculated using finite-difference estimation of density functional theory (DFT) electronic band curvatures. However, finite differences require an additional convergence study and are prone to numerical noise. Moreover, the concept of effective mass breaks down at degenerate band extrema. We assess the former limitation by developing a method that allows to obtain the Hessian of DFT bands directly, using density functional perturbation theory. Then, we solve the latter issue by adapting the concept of "transport equivalent effective mass" to the k ·p framework. The numerical noise inherent to finite-difference methods is thus eliminated, along with the associated convergence study. The resulting method is therefore more general, more robust, and simpler to use, which makes it especially appropriate for high-throughput computing. After validating the developed techniques, we apply them to the study of silicon, graphane, and arsenic. The formalism is implemented into the ABINIT software and supports the norm-conserving pseudopotential approach, the projector augmented-wave method, and the inclusion of spin-orbit coupling. The derived expressions also apply to the ultrasoft pseudopotential method.

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“…This compound is interesting due to its exceptional properties (e.g. high temperature superconductivity predicted for properly doped graphane [4,5]) and as a possible candidate for solid cell hydrogen storage elements [6,7].…”

Section: Introductionmentioning

confidence: 99%

Is graphane the most stable carbon monohydride?

Kondrin

Бражкин²

2016

Nanosystems: Phys. Chem. Math.

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We discuss a number of hydrocarbon structures whose cohesive energy is not worse than that of benzene and graphanes. These structures can be regarded as sublattices of known carbon structures so the strain exerted on the crystal lattice is minimal and caused mostly by the steric interactions of hydrogen atoms. Possible synthetic routes are proposed. Due to their exceptional mechanical, structural and electrical properties, these crystal structures may have utility as mechanical, optoelectronic or biological materials.

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Graphene’s cousin: the present and future of graphane

Cited by 79 publications

References 94 publications

Graphite to Graphene via Graphene Oxide: An Overview on Synthesis, Properties, and Applications

Graphite to Graphene via Graphene Oxide: An Overview on Synthesis, Properties, and Applications

Precise effective masses from density functional perturbation theory

Is graphane the most stable carbon monohydride?

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