Journal
APPLIED RADIATION AND ISOTOPES
Volume 131, Issue -, Pages 30-35Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2017.10.045
Keywords
Boron nitride nanotubes; Samarium; Doping; Synthesis; Catalyst
Categories
Funding
- CNPq
- FAPEMIG [TEC-APQ-01897-16]
- CAPES [305475/2015-0]
- Microscopy Center of the Federal University of Minas Gerais Belo Horizonte, Brazil [401]
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Boron nitide nanotubes doped in situ with samarium (Sm-doped BNNTs) were synthesized at 1150 degrees C under atmosphere of NH3/N-2 gas mixture by thermal chemical vapor deposition (TCVD) using samarium oxide that is a product of the process separation of thorium and uranium tailings. The samarium in the BNNTs sample was activated by neutron capture, in a nuclear reactor, producing Sm-152 radioisotopes. The STEM-EELS spectrum and neutron activation show energies attributed to the samarium confirming the in situ doping process during BNNTs growth. The results demonstrate that this material has great potential as a nanosized beta(-) emission source for medical therapy.
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