USE OF MOLYBDENITE NANOPARTICLES FOR PHOTONUCLEAR PRODUCTION OF TECHNETIUM-99m

Dikiy, N.P.; Lyashko, Yu.V.; Medvedeva, E.P.; Medvedev, D. V.; Uvarov, V.L.; Fedorets, I. D.

doi:10.46813/2019-124-149

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Hence, the refined formula for Fe 3 O 4 particles is Fe 3+ [Fe 3+ Fe 2+ ]O 4 2-; the crystal lattice parameter is 0.83716(4) nm, while for an ordered and stoichiometric Fe 3 O 4 the crystal lattice parameter is 0.83952(2) nm. However, in contrast to the conventional magnetite [41,42], there is a decrease in the d-and α-parameters of an elementary cell in Fe 3 O 4 nanoparticles of the sample 1 indicating a crystal lattice compression in the synthesized nanoparticles [39][40][41][42]. The broadening of bands on the X-ray diffraction pattern (Fig.…”

Section: Effect Of Acid Medium On the Physico-chemical State On The S...mentioning

confidence: 96%

“…7 shows the full profile X-ray diffraction pattern of the experimental sample 1. One can see that the synthesized Fe 3 O 4 nanoparticles belong to the ferrospinels [35,[39][40][41][42][43]. The name "spinel structure" comes from the name of the MgAl 2 O 4 mineral which is crystallized in the cubic system (Fig.…”

Section: Effect Of Acid Medium On the Physico-chemical State On The S...mentioning

confidence: 99%

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Dissolution Kinetics of Fe3O4 Nanoparticles in the Acid Media

Tsykhanovska¹,

Evlash²,

Alexandrov³

et al. 2019

ChChT

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The Fe 3 O 4 nanoparticles dissolution in the acid media (pH = 1.8-5.0; 3 h) has been studied. The kinetic curves have been obtained and Fe 3 О 4 solubility has been determined using spectrochemical, gravimetric and atomic absorption methods. Fe 3 О 4 solubility was found to be increased with the increase in inorganic media acidity and the time. By means of SEM, XRD and NMR analyses the effect of acidic media on the physico-chemical properties of Fe 3 О 4 particles surface has been determined. Кeywords: Fe 3 О 4 nanoparticles, solubility, kinetics, acidic media.

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Section: Effect Of Acid Medium On the Physico-chemical State On The S...mentioning

confidence: 96%

Section: Effect Of Acid Medium On the Physico-chemical State On The S...mentioning

confidence: 99%

Dissolution Kinetics of Fe3O4 Nanoparticles in the Acid Media

Tsykhanovska¹,

Evlash²,

Alexandrov³

et al. 2019

ChChT

View full text Add to dashboard Cite

show abstract

“…The activity of isotopes obtained in reactions 154 Sm(γ,n) 153 Sm, 176 Yb((γ,n) 175 Yb, and 187 Re(γ,n) 186 Re in nanoparticles clinoptilolite measured by Ge(Li)detector with volume 50 cm 3 and with energy resolution 3.2 keV in the area of 1332 [8].…”

Section: Methodsmentioning

confidence: 99%

POSSIBILITES OF ISOTOPES PRODUCTION OF 153Sm, 175Yb, 186Re AT THE ELECTRONIC ACCELERATOR

Dikiy,

Krasnoselskiy,

Lyashko

et al. 2023

Problems of Atomic Science and Technology

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Photonuclear technology for producing osteotropic isotopes 153Sm (Т1/2 = 1.9 days, Eβ = 0.8 MeV, Eγ = 103.2 keV), 175Yb (Т1/2 = 4.2 days, Eβ = 0.5 MeV, Eγ = 396.3 keV) and 186Re (T1/2 = 3.8 days, Eβ = 1.1 MeV, Eγ = 137.2 keV) with using nanoparticles (50…80 nm) of oxides of these elements and the Szilard-Chalmers reaction to increase specific activity have been developed at the NSC KIPT electron accelerator. Such medical isotopes are not produced in Ukraine. The overall electron accelerator isotope yield when bremsstrahlung irradiated these samples with a maximum energy of 40 MeV and a current of 250 µA for 186Re and 13.5 MeV and a current of 500 µA for 153Sm and 175Yb has been shown to have the advantages of higher specific activity, negligible the content of impurities and does not require immobilization of radioactive waste in comparison with a reactor and a cyclotron.

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“…In the case of NPs, the drawback of this method is the generation of unwanted nuclei mostly from the NP surface sputtering. Dikiy et al studied MoO 3 NPs suspended in isopropyl alcohol and irradiated by Bremsstrahlung with E max = 12.5 MeV [3].…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulations of Mo nanoparticles sputtering under irradiation

Panetier¹,

Ruiz²,

Rossi³

et al. 2022

Phys. Scr.

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99Mo is an essential isotope in nuclear medicine, but the nuclear reactors used for their production reaching their end of life, problems of supply arise and new methods of production need to be considered. Here we study the possibility of using gamma and neutron irradiation of Mo nanoparticles in suspension and use the separation of the isotopes escaping the nanoparticle by primary recoil to evaluate the efficiency of the process for 99Mo production. MD simulations with empirical potential of Ackland and Thetford were used to obtain information about the 99Mo escape yield from the NPs and the resulting sputtering depending on NPs sizes and recoil energy. Results show that the best yield is obtained for 5 nm NPs irradiated with gamma particles. These results are used to guide accelerator irradiation experiments led in parallel in order to evaluate the possibility of using accelerators instead of nuclear reactors for the production of 99Mo.

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USE OF MOLYBDENITE NANOPARTICLES FOR PHOTONUCLEAR PRODUCTION OF TECHNETIUM-99m

Cited by 4 publications

References 8 publications

Dissolution Kinetics of Fe3O4 Nanoparticles in the Acid Media

Dissolution Kinetics of Fe3O4 Nanoparticles in the Acid Media

POSSIBILITES OF ISOTOPES PRODUCTION OF 153Sm, 175Yb, 186Re AT THE ELECTRONIC ACCELERATOR

Molecular dynamics simulations of Mo nanoparticles sputtering under irradiation

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