Obtaining Boron Carbide and Nitride Matrix Nanocomposites for Neutron-Shielding and Therapy Applications

Author:

Chkhartishvili Levan12,Makatsaria Shio13,Gogolidze Nika14,Tsagareishvili Otar2,Batsikadze Tamaz5,Mirzayev Matlab678ORCID,Kekutia Shalva9,Mikelashvili Vladimer9ORCID,Markhulia Jano9ORCID,Minashvili Tamaz1,Davitadze Ketevan1,Barbakadze Natia10,Dgebuadze Tamar10,Kochiashvili Ketevan10,Tsiskarishvili Rusudan10,Chedia Roin210

Affiliation:

1. Engineering Physics Department, Georgian Technical University, 77 M. Kostava Ave., 0160 Tbilisi, Georgia

2. Semiconducting and Powder Composite Materials Laboratory, Ferdinand Tavadze Metallurgy and Materials Science Institute, 8b E. Mindeli Str., 0186 Tbilisi, Georgia

3. Deltamed Georgia, Official Representatives of Siemens Healthcare Diagnostics in Georgia, 6a-III Digomi Massif, 0159 Tbilisi, Georgia

4. Institute of Metrology, Georgian National Agency for Standards and Metrology, 67 Chargali Str., 0178 Tbilisi, Georgia

5. Structural and Physical-Chemical Properties Research Laboratory, Ferdinand Tavadze Metallurgy and Materials Science Institute, 8b E. Mindeli Str., 0186 Tbilisi, Georgia

6. Ion-Implantation Nanotechnology and Radiation Material Science Department, International Intergovernmental Organization Joint Institute for Nuclear Research, 6 Joliot–Curie Str., 141980 Dubna, Russia

7. Laboratory of Radiation Physics of Disordered Solids, Institute of Radiation Problems, 9 B. Vahabzade Str., AZ1143 Baku, Azerbaijan

8. Innovation and Research Center, Western Caspian University, 31 Istiglaliyyat Str., AZ1001 Baku, Azerbaijan

9. Vladimer Chavchanidze Institute of Cybernetics, Georgian Technical University, 5 Z. Anjaparidze Str., 0186 Tbilisi, Georgia

10. Petre Melikishvili Institute of Physical and Organic Chemistry, Ivane Javakhishvili Tbilisi State University, 31a A. Politkovskaya Str., 0186 Tbilisi, Georgia

Abstract

The very high capture cross-section of (epi)thermal neutrons by the boron isotope 10B makes elemental boron and its compounds and composites prospective for serving as materials intensively interacting with neutron irradiation. In their nanostructured form, boron-rich materials reveal properties that improve their radiation-performance characteristics. In this regard, new technologies have been proposed for the synthesis of nanocomposites with matrices of boron carbide B4C and hexagonal boron nitride h-BN. For the first time, boron carbide-tungsten and hexagonal boron nitride–(iron,magnetite) composites were obtained, respectively, in the form of layered/sandwich structures of components B4C and W and h-BN nanopowders coated/intercalated with magnetic nanoclusters of iron Fe or magnetite Fe3O4. Studying of their chemical/phase composition, structure/morphology, and some other properties leads to the conclusion that the developed B4C–W and h-BN–(Fe,Fe3O4) composites would be useful for solving important problems of boron-based neutron shielding and BNCT (Boron Neutron Capture Therapy), such as attenuating the gamma-radiation accompanying the absorption of neutrons by 10B nuclei and targeted delivery of 10B nuclei, as BNCT therapeutic agents, to tumor tissues using control by an external magnetic field, respectively.

Funder

Shota Rustaveli National Science Foundation of Georgia

Publisher

MDPI AG

Subject

Condensed Matter Physics,Electronic, Optical and Magnetic Materials

Reference68 articles.

1. Chkhartishvili, L., Chedia, R., Tsagareishvili, O., Mirzayev, M., Makatsaria, S., Gogolidze, N., Barbakadze, N., Buzariashvili, M., Lekashvili, O., and Jinikashvili, I. (2022, January 24–26). Preparation of neutron-capturing boron-containing nanosystems. Proceedings of the 9th International Conference and Exhibition on Advanced and Nano Materials, Victoria, BC, Canada. Available online: https://iaemm.com/Pubdetails.php.

2. Chkhartishvili, L., Makatsaria, S., and Gogolidze, N. (2022, January 18–19). Boron-containing fine-dispersive composites for neutron-therapy and neutron-shielding. Proceedings of the International Scientific-Practical Conference “Innovations and Modern Challenges—2022”, Tbilisi, Georgia. Available online: https://publishhouse.gtu.ge/en/.

3. Attenuation of gamma-radiation concomitant neutron-absorption in boron–tungsten composite shields;Nabakhtiani;Nano Stud.,2013

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