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Transformation of GO to rGO due to 8.0 MeV carbon (C++) ions irradiation and characteristics performance on MnO 2 –NiO–ZnO @ GO electrode
Author(s) -
Obodo Raphael M.,
Nwanya Assumpta C.,
Iroegbu Chinedu,
Ahmad Ishaq,
Ekwealor Azubike B. C.,
Osuji Rose U.,
Maaza Malik,
Ezema Fabian I.
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5416
Subject(s) - materials science , irradiation , thin film , crystallite , non blocking i/o , band gap , analytical chemistry (journal) , ion , carbon fibers , nanotechnology , chemistry , optoelectronics , metallurgy , composite material , biochemistry , physics , organic chemistry , composite number , nuclear physics , catalysis , chromatography
Summary The effect of 8.0 MeV carbon ions (C ++ ) radiations on features and performances of MnO 2 –NiO–ZnO@GO electrodes (thin films). MnO 2 –NiO–ZnO@GO thin films were produced using the hydrothermal technique. 8.0 MeV carbon ions (C ++ ) with doses of 2.25 × 10 15 , 5.0 × 10 15 , 7.5 × 10 15 and 1.0 × 10 16 ions/cm 2 were irradiated on MnO 2 –NiO–ZnO@GO thin films. The XRD spectra indicate crystalline nature of the films while SEM images show rod‐like structures. The XRD calculated crystallite sizes varied from 1.24 to 5.58 nm. Energy‐dispersive X‐ray spectroscopy, Proton induced X‐ray emission (PIXE) and Rutherford back scattering (RBS) analysis are used to evaluate the elemental compositions of samples. Optical studies show reduced bandgap energies of various oxides due to the addition of graphene oxide. The electrochemical studies obtained a specific capacitance of 1627 and 1960 F/g for electrodes illuminated with radiation doses of 5.0 × 10 15 and 7.5 × 10 15 ions/cm 2 , respectively. Results indicate that carbon ion irradiation with low doses improved the performances of the nanostructured thin films while radiation with high doses induces adverse disorder and flaw to the MnO 2 –NiO–ZnO@GO thin film properties. These results show that ion beam irradiation is a useful tool to enhance or damage the properties of nanostructured materials depending on the dosages radiation beamed on the material.