Chemical Papers

, Volume 64, Issue 4, pp 491–498 | Cite as

Synthesis of brushite nanoparticles at different temperatures

  • Sujata Singh
  • Vaishali Singh
  • Saroj Aggarwal
  • Uttam Kumar MandalEmail author
Original Paper


Phase pure, stable nanocrystalline brushite particles with average diameter in the range of 23–87 nm were obtained by the reverse microemulsion technique employing a mixture of surfactants (Aliquat 336 & Tween 80) as template directing agents, and calcium nitrate tetrahydrate and biammonium hydrogen phosphate as precursors. Particle sizes and morphologies were tuned by adjusting the reaction parameters, precursor concentration and temperature. FTIR, TEM, and XRD were used to characterize morphological changes of as synthesized nanoparticles. FTIR and XRD analyses confirmed the formation of brushite nanoparticles. Variations in the reaction temperature resulted in changes in the particle morphology and distribution. At high temperatures (60°C), the sample exhibited high monodispersity and spherical morphology with the average grain size of 42 nm. At low temperatures (6°C), nanoflakes were formed. The results suggest that a reverse microemulsion system provides facile media for control of the phase and morphology of nanoscale calcium phosphate biominerals. A mechanism providing an insight into the formation of brushite particles has also been proposed.


reverse microemulsion brushite mixed surfactants nanoparticle morphology 


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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2010

Authors and Affiliations

  • Sujata Singh
    • 1
  • Vaishali Singh
    • 1
  • Saroj Aggarwal
    • 1
  • Uttam Kumar Mandal
    • 2
    Email author
  1. 1.University School of Basic and Applied Sciences, GGS Indraprastha UniversityKashmere Gate, DelhiIndia
  2. 2.University School of Chemical Technology, GGS Indraprastha UniversityKashmere Gate, DelhiIndia

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