Pure hydroxyapatite synthesis originating from amorphous calcium carbonate

Abstract We report a synthesis strategy for pure hydroxyapatite (HAp) using an amorphous calcium carbonate (ACC) colloid as the starting source. Room-temperature phosphorylation and subsequent calcination produce pure HAp via intermediate amorphous calcium phosphate (ACP). The pre-calcined sample un...

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Autores principales:	Michika Sawada, Kandi Sridhar, Yasuharu Kanda, Shinya Yamanaka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4e8cea2a5adb472da7bdfc5f5ab90f9e
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spelling	oai:doaj.org-article:4e8cea2a5adb472da7bdfc5f5ab90f9e2021-12-02T17:50:42ZPure hydroxyapatite synthesis originating from amorphous calcium carbonate10.1038/s41598-021-91064-y2045-2322https://doaj.org/article/4e8cea2a5adb472da7bdfc5f5ab90f9e2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-91064-yhttps://doaj.org/toc/2045-2322Abstract We report a synthesis strategy for pure hydroxyapatite (HAp) using an amorphous calcium carbonate (ACC) colloid as the starting source. Room-temperature phosphorylation and subsequent calcination produce pure HAp via intermediate amorphous calcium phosphate (ACP). The pre-calcined sample undergoes a competitive transformation from ACC to ACP and crystalline calcium carbonate. The water content, ACC concentration, Ca/P molar ratio, and pH during the phosphorylation reaction play crucial roles in the final phase of the crystalline phosphate compound. Pure HAp is formed after ACP is transformed from ACC at a low concentration (1 wt%) of ACC colloid (1.71 < Ca/P < 1.88), whereas Ca/P = 1.51 leads to pure β-tricalcium phosphate. The ACP phases are precursors for calcium phosphate compounds and may determine the final crystalline phase.Michika SawadaKandi SridharYasuharu KandaShinya YamanakaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michika Sawada Kandi Sridhar Yasuharu Kanda Shinya Yamanaka Pure hydroxyapatite synthesis originating from amorphous calcium carbonate
description	Abstract We report a synthesis strategy for pure hydroxyapatite (HAp) using an amorphous calcium carbonate (ACC) colloid as the starting source. Room-temperature phosphorylation and subsequent calcination produce pure HAp via intermediate amorphous calcium phosphate (ACP). The pre-calcined sample undergoes a competitive transformation from ACC to ACP and crystalline calcium carbonate. The water content, ACC concentration, Ca/P molar ratio, and pH during the phosphorylation reaction play crucial roles in the final phase of the crystalline phosphate compound. Pure HAp is formed after ACP is transformed from ACC at a low concentration (1 wt%) of ACC colloid (1.71 < Ca/P < 1.88), whereas Ca/P = 1.51 leads to pure β-tricalcium phosphate. The ACP phases are precursors for calcium phosphate compounds and may determine the final crystalline phase.
format	article
author	Michika Sawada Kandi Sridhar Yasuharu Kanda Shinya Yamanaka
author_facet	Michika Sawada Kandi Sridhar Yasuharu Kanda Shinya Yamanaka
author_sort	Michika Sawada
title	Pure hydroxyapatite synthesis originating from amorphous calcium carbonate
title_short	Pure hydroxyapatite synthesis originating from amorphous calcium carbonate
title_full	Pure hydroxyapatite synthesis originating from amorphous calcium carbonate
title_fullStr	Pure hydroxyapatite synthesis originating from amorphous calcium carbonate
title_full_unstemmed	Pure hydroxyapatite synthesis originating from amorphous calcium carbonate
title_sort	pure hydroxyapatite synthesis originating from amorphous calcium carbonate
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4e8cea2a5adb472da7bdfc5f5ab90f9e
work_keys_str_mv	AT michikasawada purehydroxyapatitesynthesisoriginatingfromamorphouscalciumcarbonate AT kandisridhar purehydroxyapatitesynthesisoriginatingfromamorphouscalciumcarbonate AT yasuharukanda purehydroxyapatitesynthesisoriginatingfromamorphouscalciumcarbonate AT shinyayamanaka purehydroxyapatitesynthesisoriginatingfromamorphouscalciumcarbonate
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Pure hydroxyapatite synthesis originating from amorphous calcium carbonate

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