Swift heavy-ion irradiation of graphene oxide: Localized reduction and formation of sp-hybridized carbon chains

Olejniczak, Andrzej; Nebogatikova, N. A.; Frolov, A. V.; Kulik, M.; Antonova, I. V.; Skuratov, V.A.

doi:10.1016/j.carbon.2018.09.042

Cited by 18 publications

(19 citation statements)

References 71 publications

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“…Specifically, the presence of these nano-hillocks could be explained by the ability of energetic ions to release high energy along their track, in a very small volume which can be assumed cylindrical and surrounding the ion trajectory. It could suggest that the localized reduction of GO occurring along the ion tracks can generate nanosized hillocks (bright spots) at the surface which could be considered graphene quantum dots (GQDTs) embedded in a non-conducting matrix as confirmed by literature [ 22 ]. The density of these QDs increases with the fluence (see red squares in Figure 6 b and Figure 7 a,b) and at high doses, they start to overlap [ 22 ].…”

Section: Resultsmentioning

confidence: 81%

“…Now the controllable modifications induced in the ion irradiated GO at low fluences are investigated to propose the GO as prospective dosimeter. In addition, following the results described by Olejniczak et al [ 22 ], nanosized rGO spots can be created by swift heavy ion (SHI) bombardment of GO films. These rGO spots can be considered graphene QDTs embedded in a non-conducting matrix when SHIs with low and intermediate electronic stopping power Se values irradiate GO foils, whereas ions with high Se values can form coupled QDTs-antidots with sp-C bridge.…”

Section: Introductionmentioning

confidence: 77%

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Compositional and Structural Modifications by Ion Beam in Graphene Oxide for Radiation Detection Studies

Cutroneo

Torrisi

Silipigni

et al. 2022

IJMS

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In the present study, graphene oxide foils 10 μm thick have been irradiated in vacuum using same charge state (one charge state) ions, such as protons, helium and oxygen ions, at the same energies (3 MeV) and fluences (from 5 × 1011 ion/cm2 to 5 × 1014 ion/cm2). The structural changes generated by the ion energy deposition and investigated by X-ray diffraction have suggested the generation of new phases, as reduced GO, GO quantum dots and graphitic nanofibers, carbon nanotubes, amorphous carbon and stacked-cup carbon nanofibers. Further analyses, based on Rutherford Backscattering Spectrometry and Elastic Recoil Detection Analysis, have indicated a reduction of GO connected to the atomic number of implanted ions. The morphological changes in the ion irradiated GO foils have been monitored by Transmission Electron, Atomic Force and Scanning Electron microscopies. The present study aims to better structurally, compositionally and morphologically characterize the GO foils irradiated by different ions at the same conditions and at very low ion fluencies to validate the use of GO for radiation detection and propose it as a promising dosimeter. It has been observed that GO quantum dots are produced on the GO foil when it is irradiated by proton, helium and oxygen ions and their number increases with the atomic number of beam gaseous ion.

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Section: Resultsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 77%

Compositional and Structural Modifications by Ion Beam in Graphene Oxide for Radiation Detection Studies

Cutroneo

Torrisi

Silipigni

et al. 2022

IJMS

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“…It was shown recently that linear carbon chains (LCCs) containing sp-hybridization are good candidates to create the shell that prevents nanoparticles aggregation and oxidation [12,13]. Despite the fact that long 1D carbon wires (carbine) were first obtained in the laboratory in the 1960s [14] and many methods of their preparation have been proposed to date [15][16][17][18][19][20], there is still no method that allows one to obtain pure and stable phases of infinite one-dimensional carbon chains. It is generally accepted that carbyne is unstable due to the exothermic formation of crosslinks between adjacent atomic chains [21].…”

Section: Introductionmentioning

confidence: 99%

X-ray Photoelectron Spectra of Ag-Au Colloidal Nanoparticles after Interaction with Linear Carbon Chains

et al. 2021

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The results of X-ray photoelectron spectra (XPS) characterization of the surface of Ag-Au colloidal nanoparticles (Ag-Au NPs), prepared by laser ablation in water before and after interaction with linear carbon chains (LCC), are presented. No additional features appear in high-energy resolved XPS core level spectra of Ag-Au NPs which indicates that surface is not oxidized. The measurements of XPS Ag 3d-spectrum of (Ag-Au)@LCC manifests the additional low-energy structure that is associated with the formation of Ag–C bonds. The charge transfer between Au atoms on the NPs surface and LCC was established. Additionally, some oxidation of the Ag atoms on the surface of (Ag-Au)@LCC is observed which arises during laser ablation in water. We assume that oxidative species will preferably interact with the areas outside the LCC instead of oxidizing the carbon chains which was confirmed by XPS C 1s spectra.

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“…The downside of this method is the degradation of the sample quality [8], which limits the usage of chemically modified graphene in electronics applications. Other methods, that does not involve the chemical modification may include the use of electron beams, laser pulses or particle irradiation [9,10]. Such modifications may introduce various types of defects into graphene [11,12], which can be described as nanopores, antidots or antidot arrays.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the electrical conductivity of irradiated graphene

Kolesnikov

2020

Solid State Communications

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Transport properties of irradiated graphene (electrical conductivity and mobility) are numerically investigated using the real-space Kubo formalism. A micrometer-sized system consisting of millions of atoms with nanopores of various sizes and concentrations is described. Electrical conductivity and mobility as a function of carrier (hole) density are calculated to provide possible comparisons with experiments.

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Swift heavy-ion irradiation of graphene oxide: Localized reduction and formation of sp-hybridized carbon chains

Cited by 18 publications

References 71 publications

Compositional and Structural Modifications by Ion Beam in Graphene Oxide for Radiation Detection Studies

Compositional and Structural Modifications by Ion Beam in Graphene Oxide for Radiation Detection Studies

X-ray Photoelectron Spectra of Ag-Au Colloidal Nanoparticles after Interaction with Linear Carbon Chains

Numerical investigation of the electrical conductivity of irradiated graphene

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