Neutron scattering study of reduced graphene oxide of natural origin

Sheka, E. F.; Natkaniec, I.; Rozhkova, N. N.; Hołderna-Natkaniec, K.

doi:10.1134/s0021364014110113

Cited by 14 publications

(28 citation statements)

References 15 publications

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“…Time-of-flight INS spectra from wet (1) and dried (2) shungites and spectral graphite (Gr) [1]. Curve Al presents background from Al cryostat and sample holder material.…”

Section: General Characteristics Of the Ins Studymentioning

confidence: 99%

“…Both peaks are broadened, which gives evidence for a stacked structure with a relevant interlayer distance. The obtained data concerning the interlayer spacing in the studied samples, as well as the lateral dimension of the layer, are given in Table 2 (details of the NPD study analysis are given elsewhere [1][2][3][4]). As seen in the table, all the studied samples present graphite-like stacked structures differing therewith by both the number of layers in the relevant stacks and the lateral dimensions of the layers.…”

Section: Introductionmentioning

confidence: 99%

“…The first is the naturally-sourced rGO represented by shungite carbon (sh-rGO below) [1,2]. The second covers synthetic GO and rGO products of the Akkolab company [5] (Ak-GO and Ak-rGO) with the latter produced in the course of chemical treatment [6].…”

Section: Introductionmentioning

confidence: 99%

“…Graphene oxide and reduced graphene oxide have become the favorite species for neutron scattering study [1][2][3]. The hydrophilicity of GO and the hydrophobicity of rGO are responsible for the intense responses in both cases.…”

Section: Introductionmentioning

confidence: 99%

“…The latter was estimated by the width of Gr(110)-like peaks positioned at ∼ 1.2Å. 1 The definition > 20 nm marks the low limit of the lateral dimension of layers pointing that it is bigger than the coherent scattering region of crystalline graphite equal to ∼ 20 nm along c direction [9]. Actual layer dimensions are of microsize range [3,4].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Parent and reduced graphene oxide of different origin in light of neutron scattering

Sheka¹,

Natkaniec²,

Rozhkova³

et al. 2016

Nanosystems: Phys. Chem. Math.

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The current paper presents results from an extended neutron scattering study of a three-part set of parent and reduced graphene oxides (GO and rGO, respectively) of different origins. The first part concerns the rGO of natural origin represented by shungite carbon, the second and third parts are related to synthetic GO/rGO pairs with the latter produced during either chemical treatment or via thermal exfoliation of the parent GO, respectively. The study involved both the neutron diffraction and inelastic neutron scattering. The one-phonon amplitude-weighted density of vibrational states G(ω) represents the inelastic incoherent neutron scattering spectra of the products. Common characteristics and individual distinctions of the studied species are discussed.

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“…Time-of-flight INS spectra from wet (1) and dried (2) shungites and spectral graphite (Gr) [1]. Curve Al presents background from Al cryostat and sample holder material.…”

Section: General Characteristics Of the Ins Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Parent and reduced graphene oxide of different origin in light of neutron scattering

Sheka¹,

Natkaniec²,

Rozhkova³

et al. 2016

Nanosystems: Phys. Chem. Math.

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Fatty acid transfer between serum albumins and shungite carbon nanoparticles and its effect on protein aggregation and association

2019

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Computationally Supported Neutron Scattering Study of Parent and Chemically Reduced Graphene Oxide

et al. 2015

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Synthetic graphene oxide (GO) as well as the product of its reducing performed in the regime of hydrogenolysis (rGO) were studied by both elastic and inelastic neutron scattering at low and room temperature conditions. The neutron diffraction patterns were analyzed to confirm stacking structures of both species consisting of 2−3 and ∼7 layers of microsize lateral dimension and the interlayer distances of 7 and 3.5 Å, respectively. The inelastic incoherent neutron scattering spectra were analyzed in the frame of the computationally supported one-phonon amplitude-weighted density of vibrational states G(ω) approximation. Calculations of G(ω) spectra were performed in the framework of semilocal density functional theory. The computational models were adjusted to the atom mass content of both GO and rGO species. The presented study has revealed the retained water in the freshly made GO, corresponding to the relatively low humidity, which further reacts with the oxygen-containing groups at the GO basal planes. The reaction results in the formation of hydroxyls chemically bound to the GO core in the course of the prolong storage of the product under ambient conditions. The analysis of the rGO G(ω) spectrum has disclosed the chemical composition of its circumference attributing the latter to sets of CH units with a minor presence of atomic oxygen.

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Neutron scattering study of reduced graphene oxide of natural origin

Cited by 14 publications

References 15 publications

Parent and reduced graphene oxide of different origin in light of neutron scattering

Parent and reduced graphene oxide of different origin in light of neutron scattering

Fatty acid transfer between serum albumins and shungite carbon nanoparticles and its effect on protein aggregation and association

Computationally Supported Neutron Scattering Study of Parent and Chemically Reduced Graphene Oxide

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