Effect of Mn doping on hydrolysis of low-temperature synthesized metastable alpha-tricalcium phosphate

Lauryna Sinusaite, Anton Popov, Eva Raudonyte-Svirbutaviciene, Jen Chang Yang, Aivaras Kareiva, Aleksej Zarkov

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In the present work, effect of Mn doping on hydrolysis rate of low-temperature synthesized metastable α-tricalcium phosphate (α-TCP) was investigated. α-TCP powders containing different amount of Mn2+ ions (0, 0.5 and 1 mol%) were synthesized by wet co-precipitation process, followed by annealing and crystallization of as-precipitated amorphous calcium phosphate at 700 °C. It was demonstrated that the presence of Mn2+ ions significantly retards hydrolysis rate of α-TCP. While pristine α-TCP fully hydrolyzed with a conversion to calcium-deficient hydroxyapatite in 10 h, complete hydrolysis of α-TCP doped with 0.5 and 1 mol% of Mn occurred only after 20 and 35 h, respectively. Initial and final products were characterized by X-ray diffraction (XRD) analysis, infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). Chemical composition of starting and fully hydrolyzed α-TCP powders was determined by inductively coupled plasma optical emission spectrometry (ICP-OES).

Original languageEnglish
JournalCeramics International
Publication statusAccepted/In press - 2021


  • Hydrolysis
  • Hydroxyapatite
  • Mn doping
  • Precipitation
  • TCP
  • α-tricalcium phosphate

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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