Preparation and characterization of graphene and few-layer graphene

Feng, Ying; Huang, Shihua; Kang, Kai; Duan, Xiaoxia

doi:10.1016/j.carbon.2011.02.035

Cited by 7 publications

(7 citation statements)

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“…The uniform dispersion of GN-starch improved the conductivity of the PS matrix, probably due to the formation of conductive networks throughout the insulating PS matrix. 34 With a higher GN-starch content (>0.248 wt %), the enhancement of the conductivity was not obvious.…”

Section: Resultsmentioning

confidence: 97%

Fabrication and Properties of Starch-Grafted Graphene Nanosheet/Plasticized-Starch Composites

Zheng

2013

Ind. Eng. Chem. Res.

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A novel method was used to prepare starch-grafted graphene nanosheets (GN-starch), in which graphene oxide was reduced with hydrazine hydrate in the presence of starch. The obtained GN-starch was characterized by electron microscopy, FTIR analysis, Raman spectra, thermogravimetric analysis, and UV–visible spectra, which confirmed that starch was effectively functionalized on the surface of graphene. Also, GN-starch exhibited high solubility and stability in water. The composites were also fabricated by using GN-starch as the filler in a plasticized-starch (PS) matrix. Because of the strong interaction between starch in GN-starch and the PS matrix, GN-starch can be well dispersed in the PS matrix and improve tensile strength to 25.4 MPa at a GN-starch content of 1.774 wt % and a moisture barrier even at a very low loading (0.248 wt %) of GN-starch fillers. PS/GN-starch composites could protect against UV light, and the conductivity of the composite could reach 9.7 × 10–4 S/cm at a GN-starch content of 1.774 wt %.

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Section: Resultsmentioning

confidence: 97%

Fabrication and Properties of Starch-Grafted Graphene Nanosheet/Plasticized-Starch Composites

Zheng

2013

Ind. Eng. Chem. Res.

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“…2−6 Because of their macromolecular structures, polymers can hardly be removed from the graphene surface: 7−9 they irreversibly adsorb and modify the chemical and physical properties of graphene. 10,11 Instead of using polymers, so-called polymer-free transfer techniques use special frames and holders to keep the sheet integrity of graphene.…”

mentioning

confidence: 99%

“…For years now, long chain polymers have been used to prevent cracking and to preserve the two-dimensional nature of graphene grown by chemical vapor deposition (CVD) during transfer. − Because of their macromolecular structures, polymers can hardly be removed from the graphene surface: − they irreversibly adsorb and modify the chemical and physical properties of graphene. , Instead of using polymers, so-called polymer-free transfer techniques use special frames and holders to keep the sheet integrity of graphene. , Very recently, a biphasic system composed of an aqueous solution of ammonium persulfate and hexane has been employed for clean graphene transfer . Polymer-free transfers, however, are widely known to induce cracks as graphene is a macroscopic sheet that has to be mechanically maintained while and after the underlying growth catalyst is etched.…”

mentioning

confidence: 99%

Molecular Caging of Graphene with Cyclohexane: Transfer and Electrical Transport

Belyaeva

Arjmandi-Tash

et al. 2016

ACS Cent. Sci.

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Transfer of large, clean, crack- and fold-free graphene sheets is a critical challenge in the field of graphene-based electronic devices. Polymers, conventionally used for transferring two-dimensional materials, irreversibly adsorb yielding a range of unwanted chemical functions and contaminations on the surface. An oil–water interface represents an ideal support for graphene. Cyclohexane, the oil phase, protects graphene from mechanical deformation and minimizes vibrations of the water surface. Remarkably, cyclohexane solidifies at 7 °C forming a plastic crystal phase molecularly conforming graphene, preventing the use of polymers, and thus drastically limiting contamination. Graphene floating at the cyclohexane/water interface exhibits improved electrical performances allowing for new possibilities of in situ, flexible sensor devices at a water interface.

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“…Transition metal binary compounds with layered structure possess unique properties in lubrication [1], catalysis [2], photoelectric devices and other fields [3], and have become a hot research topic [4][5][6][7]. Molybdenum disulfide (MoS 2 ) is a black powder with metallic luster in the normal condition.…”

Section: Introductionmentioning

confidence: 99%

Controllable Preparation of Nano Molybdenum Disulfide by Hydrothermal Method

Hou¹

2017

Ceramics - Silikaty

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Preparation and characterization of graphene and few-layer graphene

Cited by 7 publications

References 0 publications

Fabrication and Properties of Starch-Grafted Graphene Nanosheet/Plasticized-Starch Composites

Fabrication and Properties of Starch-Grafted Graphene Nanosheet/Plasticized-Starch Composites

Molecular Caging of Graphene with Cyclohexane: Transfer and Electrical Transport

Controllable Preparation of Nano Molybdenum Disulfide by Hydrothermal Method

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