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

Autor:	Denis V. Leybo, A. G. Yudin, K. O. Chuprunov, Denis Kuznetsov, Anna Godymchuk, Evgeny Kolesnikov, I A Ilinykh, D. Lysov
Rok vydání:	2020
Předmět:	Ph level Materials science Chemical engineering pH гидроксиапатиты спектроскопия Phase composition рентгеновская дифракция гидротермальные методы рамановская спектроскопия Фурье-преобразования Hydrothermal circulation фазовый состав
Zdroj:	IOP Conference Series: Materials Science and Engineering. 731:012023
ISSN:	1757-899X 1757-8981
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::455211e814676524013fd193656ce901 https://doi.org/10.1088/1757-899x/731/1/012023 Zobrazit plný text záznamu