0563495 - ÚJF 2023 RIV CH eng J - Článek v odborném periodiku
Cutroneo, Mariapompea - Torrisi, L. - Silipigni, L. - Michalcová, A. - Havránek, Vladimír - Macková, Anna - Malinský, Petr - Lavrentev, Vasyl - Noga, P. - Dobrovodský, J. - Slepička, P. - Fajstavr, D. - Ando, L. - Holý, V.
Compositional and Structural Modifications by Ion Beam in Graphene Oxide for Radiation Detection Studies.
International Journal of Molecular Sciences. Roč. 23, č. 20 (2022), č. článku 12563. ISSN 1422-0067. E-ISSN 1422-0067
Grant CEP: GA MŠMT EF16_013/0001812; GA ČR GA22-17346S
Výzkumná infrastruktura: CANAM II - 90056
Institucionální podpora: RVO:61389005
Klíčová slova: GO * dosimeter * ion beam irradiation * graphene quantum dots * CNT * AFM * SEM * TEM
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 5.6, rok: 2022 ; AIS: 1.03, rok: 2022
Způsob publikování: Open access
Web výsledku:
https://doi.org/10.3390/ijms232012563DOI: https://doi.org/10.3390/ijms232012563

In the present study, graphene oxide foils 10 mu m 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 x 10(11) ion/cm(2) to 5 x 10(14) ion/cm(2)). 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.
Trvalý link: https://hdl.handle.net/11104/0335450