Facile in-situ synthesis of NbB2 nanoparticles at low temperature

Aayush Gupta, Varun Singhal, O. P. Pandey

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Niobium diboride (NbB2) nanoparticles have been successfully synthesized at 800 °C in a single step from niobium penta-oxide (Nb2O5), magnesium (Mg) and borax (Na2B4O7·10H2O) in an autoclave. The synthesis temperature and holding time have been optimized to obtain single phase NbB2. The phase determination, thermal stability and morphological features of synthesized samples have been analyzed by X-ray diffraction (XRD), thermal gravimetric-differential scanning calorimetry (TG-DSC) and electron microscopic technique respectively. Williamson-Hall (W-H) analysis has also been done to observe the effects of synthesis parameters (temperature and holding time) on crystal distortion. With the help of XRD, microstructural features and thermodynamic calculations, formation mechanism for the synthesized samples has been predicted.

Original languageEnglish
Pages (from-to)306-313
Number of pages8
JournalJournal of Alloys and Compounds
StatePublished - 5 Mar 2018
Externally publishedYes


  • Nanoparticle
  • Niobium diboride
  • Synthesis mechanism
  • Williamson-Hall analysis


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