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Information × Registration Number 0219U102311, 0119U102249 , R & D reports Title Development of radiation exposure technology for directed modification of nanosized metal oxides popup.stage_title Head Dykyi Mykola P., Доктор фізико-математичних наук Registration Date 26-12-2019 Organization National Science Center "Kharkiv Institute of Physics and Technology" popup.description2  The effect of radiation exposure on the properties of nanoparticles of metal oxides Fe2O3, Fe3O4, ZnO, ZrO2 by means of nuclear reactions has been investigated. Accelerated electron beams (E to 6 MeV) and gamma rays (E = 1.6 MeV) were used on the LPT of NSC KIPT. Analysis of the measured gamma-ray spectra using a Ge (Li) detector revealed that all the samples contained practically no impurity elements. The results of X-ray diffractometry and IR spectrometry showed that the samples of metal nanoxides after the impact of ionizing radiation practically do not undergo significant changes in their phase composition and retain the original crystalline structure. The efficiency of the gamma-activated states of the metal nanocarbons was determined by the emitted radionuclides of Auger electrons, which have a high specific braking power (approximately 25 keV / μm) and runs comparable to the size of the nanoparticles. High ionization losses led to the formation of highly reactive oxygen products and the activation of the intensity of Fenton reactions. Various modification factors of the influence of radiation, hydrothermal and chemical nature on nanoparticles of metal oxides have allowed to obtain on this basis new nanoparticles with increased activity for sorbtion of radionuclides. Product Description popup.authors popup.nrat_date 2020-04-02 Close