Effect of Mn doping on hydrolysis of low-temperature synthesized metastable alpha-tricalcium phosphate. Issue 9 (1st May 2021)

• Record Type: Journal Article
• Authors: Sinusaite, Lauryna; Popov, Anton; Raudonyte-Svirbutaviciene, Eva; Yang, Jen-Chang; Kareiva, Aivaras; Zarkov, Aleksej
• Is Part Of: Ceramics international. Volume 47:Issue 9(2021)
• Page Start: 12078
• Page End: 12083
• Publication Date: 2021-05-01
• Subjects: α-tricalcium phosphate -- TCP -- Precipitation -- Hydrolysis -- Mn doping -- Hydroxyapatite; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.01.052
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: 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 Mn 2+ 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 Mn 2+ 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).