The pH Level Influence on Hydroxyapatite Phase Composition Synthesized with Hydrothermal Method

K. Chuprunov, A. Yudin, D. Lysov, E. Kolesnikov, D. Kuznetsov, D. Leybo, I. Ilinykh, A. Godymchuk

Research output: Contribution to journalConference article


This paper reports the pH level influence on hydroxyapatite phase composition synthesized with hydrothermal method in Ca(OH)2-H3PO4, Ca(NO3)2-(NH4)2HPO4-NH4OH, Ca(OH)2-NH4H2PO4.The obtained samples were studied with X-Ray diffraction, Fourier Transform Infrared (FTIR) and Raman spectroscopy. The one phase Ca5H2O13P3 high crystallinity hydroxyapatite was synthesized with hydrothermal method at pH equal to 11. The crystallinity degree was calculated from the X-Ray diffraction pattern and became 0.96. The increasing pH level from 7 to 11 provides obtaining one phase hydroxyapatite at pH level 11 instead the two phase Ca9.04(PO4)6(OH)1.68, CaHPO4 at pH level 9 and CaPO3(OH), Ca(OH)2 at pH level 7.

Original languageEnglish
Article number012023
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 20 Jan 2020
EventInternational Science and Technology Conference for Youth on Advanced Materials for Engineering and Medicine, AMEM 2019 - Tomsk, Russian Federation
Duration: 30 Sep 20195 Oct 2019


ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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