Formation and characterization of ultrafine nanophosphors of lithium tetraborate (Li2B4O7) for personnel and medical dosimetry

Nasrin Khalilzadeh*, Elias Bin Saion, Hamed Mirabolghasemi, Nayereh Soltani, Abdul Halim Bin Shaari, Mansor Bin Hashim, Noriah Mod Ali, Arash Dehzangi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The present study demonstrates an innovative single-step thermal synthesis of nano-sized lithium tetraborate dosimeter and its characterization. The optimum calcination temperature and time for the synthesis of the nanoparticles material was 750 °C and 2 h, respectively. Characterization of the samples was carried out using X-ray diffractometry (XRD), Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), and thermoluminescence (TL). FT-IR, XRD and TEM results confirmed the formation of pure nano-crystalline lithium tetraborate. The product showed a linear response over a wide range of doses from 10-1 to 1.5 × 102 Gy. Moreover, the samples illustrate non-energy dependence among a wide range energy interval from 24 keV up to 1250 keV and almost no fading during one month storage.

Original languageEnglish (US)
Pages (from-to)206-212
Number of pages7
JournalJournal of Materials Research and Technology
Volume5
Issue number3
DOIs
StatePublished - Jul 1 2016

Funding

This work was granted by the Ministry of Higher Education of Malaysia under the FRGS and RUGS grants. The authors would be appreciated for attention and collaboration of the staff of the Physics Department Faculty of Science, Faculty of Engineering, and Bioscience Institute of University Putra Malaysia. Moreover, we also would like to thank to the staff of the Nuclear Agency of Malaysia for allowing the use of their facilities. Furthermore, so many thanks to the staff of school of Applied Physics of University Kebangsaan Malaysia for their good cooperation.

Keywords

  • Dosimeter
  • Energy dependence
  • Nanophosphors
  • Thermal treatment
  • Thermoluminescence

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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