Experimental and Theoretical Investigations on the Ferroelectricity of Graphene Oxides

Kong, Xiangkai; Chen, Qianwang

doi:10.6023/a12090707

Cited by 7 publications

(6 citation statements)

References 27 publications

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“…1) and functional groups such as tertiary hydroxyl, 1,3-ether, ketone, quinine and phenol. 26,27 Qian-Wang In addition, it has now been confirmed that epoxy and hydroxyl groups will reside on the GO basal surface, while carboxyl groups tend to attach to the edges of the GO plane. 28,29 2.1.1.…”

Section: Introductionmentioning

confidence: 94%

Doped graphene for metal-free catalysis

2014

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Graphene has attracted increasing attention in different scientific fields including catalysis. Via modification with foreign metal-free elements such as nitrogen, its unique electronic and spin structure can be changed and these doped graphene sheets have been successfully employed in some catalytic reactions recently, showing them to be promising catalysts for a wide range of reactions. In this review, we summarize the recent advancements of these new and interesting catalysts, with an emphasis on the universal origin of their catalytic mechanisms. We are full of hope for future developments, such as more precisely controlled doping methods, atom-scale surface characterization technology, generating more active catalysts via doping, and finding wide applications in many different fields.

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Section: Introductionmentioning

confidence: 94%

Doped graphene for metal-free catalysis

2014

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“…21) and accompanied by the attachment of different types of functional groups, including tertiary hydroxyl, quinine, 1,3-ether, ketone and phenol. 249,251 The reported weak ferroelectricity of GO is attributed to the presence of surface-decorated functional and edge modied groups. 251 Different experimental and theoretical studies conducted on the magnetic behavior of rGO and GO reported anomalous behavior.…”

Section: Substitution Of Group Via Elements In Graphenementioning

confidence: 99%

“…249,251 The reported weak ferroelectricity of GO is attributed to the presence of surface-decorated functional and edge modied groups. 251 Different experimental and theoretical studies conducted on the magnetic behavior of rGO and GO reported anomalous behavior. Along with high room temperature ferromagnetism for GO and rGO, 252,253 diamagnetism, paramagnetism, superparamagnetism and antiferromagnetism were observed by different groups using different materials and different techniques.…”

Section: Substitution Of Group Via Elements In Graphenementioning

confidence: 99%

Modulating the electronic and magnetic properties of graphene

et al. 2017

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Graphene, an sp2 hybridized single sheet of carbon atoms organized in a honeycomb lattice, is a zero band gap semiconductor or semimetal. This emerging material has been the subject of recent intensive research due to the novelty of its structural, electronic, optical, mechanical, and magnetic properties. Due to these properties, graphene is a favorable material for the fabrication of electronic devices, transparent electrodes, spintronics devices, and a growing array of several other applications that explore the potential of this marvelous material. However, the lack of intrinsic band gap and nonmagnetic nature of graphene limit its practical applications in the widely expanding field of carbon-based devices. To take advantage of the hidden potential of this material, numerous techniques have been developed to tailor its electronic and magnetic properties. These methods include the mutual interaction between graphene layer and its substrate, doping with surface adatoms, substitutional doping, vacancy creation, and edges and strain manipulation. Herein, an overview of recently emerging innovative techniques adopted to tailor the electronic and magnetic properties of graphene is presented. The limitations, possible directions for future research and applications in diverse fields of these methods are also mentionedpublishersversionPeer reviewe

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“…22which investigated the ferroelectricity of GO22, giving , with = 502 and = 1075 mm/kV. In our experimental condition, λ = 635 nm and d = 1.5 nm.…”

Section: Resultsmentioning

confidence: 99%

Modulation of the optical transmittance in monolayer graphene oxide by using external electric field

Qiao

Qin

Gao

et al. 2015

Sci Rep

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Graphene oxide (GO) emerges as a functional material in optoelectronic devices due to its broad spectrum response and abundant optical properties. In this article, it is demonstrated that the change of optical transmittance amplitude for monolayer GO (mGO) could be up to 24.8% by an external electric field. The frequency harmonics for transmittance spectra are analyzed by use of Fast Fourier Transforms to give an insight into the modulation mechanism. Two physical models, the electrical permittivity and the sheet conductivity which linearly vary as the electric field, are proposed to response for the transmittance modulation. The model-based simulations agree reasonable well with the experimental results.

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Experimental and Theoretical Investigations on the Ferroelectricity of Graphene Oxides

Cited by 7 publications

References 27 publications

Doped graphene for metal-free catalysis

Doped graphene for metal-free catalysis

Modulating the electronic and magnetic properties of graphene

Modulation of the optical transmittance in monolayer graphene oxide by using external electric field

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