Articles with "graphene layers" as a keyword



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Highly Stable and Recyclable Graphene Layers Protected Nickel–Cobalt Bimetallic Nanoparticles as Tunable Hydrotreating Catalysts for Phenylpropane Linkages in Lignin

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Published in 2017 at "Catalysis Letters"

DOI: 10.1007/s10562-017-2179-1

Abstract: AbstractNickel–cobalt bimetallic nanoparticles coated with several layers of graphene were developed through direct heating treatment of bimetallic oxide precursor prepared by the modified Pechini-type sol–gel method. These nanomaterials were demonstrated to be versatile catalysts for… read more here.

Keywords: graphene layers; cobalt bimetallic; bimetallic nanoparticles; highly stable ... See more keywords
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Production and characterization of three-dimensional graphite nanoplatelets

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Published in 2017 at "Journal of Materials Science"

DOI: 10.1007/s10853-017-0829-8

Abstract: Abstract Discovery of nanographitic structure of remarkable properties such as fullerenes, carbon nanotubes and three-dimensional graphite nanoplatelets (3D-GNPs) opens the door for potential applications in science and technology. In the present work, graphite intercalation compound… read more here.

Keywords: three dimensional; graphite nanoplatelets; formula; graphene layers ... See more keywords
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The optical properties of transferred graphene and the dielectrics grown on it obtained by ellipsometry

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Published in 2017 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2017.08.109

Abstract: Abstract Graphene layers grown by chemical vapour deposition (CVD) method and transferred from Cu-foils to the oxidized Si-substrates were investigated by spectroscopic ellipsometry (SE), Raman and X-Ray Photoelectron Spectroscopy (XPS) methods. The optical properties of… read more here.

Keywords: ellipsometry; graphene layers; properties transferred; optical properties ... See more keywords
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Structural characterization of as-grown and quasi-free standing graphene layers on SiC

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Published in 2019 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2018.09.262

Abstract: Abstract We report on a comparative structural characterization of two types of high quality epitaxial graphene layers grown by CVD on 4H-SiC(0001). The layers under study are a single layer graphene on top of a… read more here.

Keywords: quasi free; free standing; graphene layers; graphene ... See more keywords
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Defect-dependent electrochemistry of exfoliated graphene layers

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Published in 2019 at "Carbon"

DOI: 10.1016/j.carbon.2019.07.100

Abstract: Abstract Graphene electrochemistry is dependent on the quality of produced graphene. Ultrasonic exfoliation of graphite in a solvent with aid of sodium salts is believed to be a convenient method to prepare high-quality graphene layers,… read more here.

Keywords: exfoliated graphene; graphene layers; sodium salts; electrochemistry ... See more keywords
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Carbon Papers and Aerogels Based on Graphene Layers and Chitosan: Direct Preparation from High Surface Area Graphite.

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Published in 2017 at "Biomacromolecules"

DOI: 10.1021/acs.biomac.7b01026

Abstract: In this work, carbon papers and aerogels based on graphene layers and chitosan were prepared. They were obtained by mixing chitosan (CS) and a high surface area nanosized graphite (HSAG) in water in the presence… read more here.

Keywords: carbon; graphene layers; aerogels based; papers aerogels ... See more keywords
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Mass Transport through Defects in Graphene Layers

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Published in 2017 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.7b06100

Abstract: The paper reports an experimental study of ZnTe and CuI transport through graphene wall of SWNTs by high resolution transmission electron microscopy. It is shown that encapsulated material evacuates the tube through the defects in… read more here.

Keywords: transport defects; microscopy; graphene layers; transport ... See more keywords
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Two-Dimensional Stacked Composites of Self-Assembled Alkane Layers and Graphene for Transparent Gas Barrier Films with Low Permeability.

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Published in 2022 at "Nano letters"

DOI: 10.1021/acs.nanolett.1c03761

Abstract: Self-assembled alkane layers are introduced between graphene layers to physically block nanometer size defects in graphene and lateral gas pathways between graphene layers. A well-defined hexatriacontane (HTC) monolayer on graphene could cover nanometer-size defects because… read more here.

Keywords: alkane layers; gas; self assembled; assembled alkane ... See more keywords
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Almost Perfect Spin Filtering in Graphene-Based Magnetic Tunnel Junctions

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Published in 2022 at "ACS Nano"

DOI: 10.1021/acsnano.2c03625

Abstract: We report on large spin-filtering effects in epitaxial graphene-based spin valves, strongly enhanced in our specific multilayer case. Our results were obtained by the effective association of chemical vapor deposited (CVD) multilayer graphene with a… read more here.

Keywords: graphene; spin filtering; spin; tunnel ... See more keywords
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Promoted glucose electrooxidation at Ni(OH)2/graphene layers exfoliated facilely from carbon waste material

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Published in 2023 at "RSC Advances"

DOI: 10.1039/d2ra07309a

Abstract: Nowadays, the glucose electro-oxidation reaction (GOR) is considered one of the most important solutions for environmental pollution. The GOR is the anodic reaction in direct glucose fuel cells and hybrid water electrolysis. In this study,… read more here.

Keywords: promoted glucose; carbon; material; glucose electrooxidation ... See more keywords
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Selective etching of hexagonal boron nitride by high-pressure CF4 plasma for individual one-dimensional ohmic contacts to graphene layers

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Published in 2020 at "Applied Physics Letters"

DOI: 10.1063/5.0022557

Abstract: We describe a technique for fabricating one-dimensional Ohmic contacts to individual graphene layers encapsulated in hexagonal boron nitride (h-BN) using CF4 and O2 plasmas. The high etch selectivity of h-BN against graphene (>1000) is achieved… read more here.

Keywords: graphene layers; ohmic contacts; graphene; one dimensional ... See more keywords