Hydrothermal Synthesis of Needle-like Apatite Crystal

Masahiro Yoshimura; Hiroyuki Suda; Kengo Okamoto; Koji Ioku

doi:10.1246/nikkashi.1991.1402

Hydrothermal Synthesis of Needle-like Apatite Crystal

Masahiro Yoshimura, Hiroyuki Suda, Kengo Okamoto, Koji Ioku

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Hydrothermal syntheses enable us to prepare HAp crystals with various aspect ratios. HAp crystals 50 nm x145 nm, aspect ratio = 2.9) were crystallized from the HAp precursor precipitated from Ca(OH)₂ and H₃PO₄ solutions at 200 °C under 2MPa for 5 h. Among the experimental factors, adding additives are most effective to control the aspect ratio. KOH, K3PO4 and EDTA gave needle-like HAp; aspect ratio = 6₃ 7 and 11, respectively under the similar hydrothermal conditions.

Original language	English
Pages (from-to)	1402-1407
Number of pages	6
Journal	Nippon Kagaku Kaishi
Volume	1991
Issue number	10
DOIs	https://doi.org/10.1246/nikkashi.1991.1402
Publication status	Published - 1991
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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AU - Suda, Hiroyuki

AU - Okamoto, Kengo

AU - Ioku, Koji

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AB - Hydrothermal syntheses enable us to prepare HAp crystals with various aspect ratios. HAp crystals 50 nm x145 nm, aspect ratio = 2.9) were crystallized from the HAp precursor precipitated from Ca(OH)2 and H3PO4 solutions at 200 °C under 2MPa for 5 h. Among the experimental factors, adding additives are most effective to control the aspect ratio. KOH, K3PO4 and EDTA gave needle-like HAp; aspect ratio = 63 7 and 11, respectively under the similar hydrothermal conditions.

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JO - Nippon Kagaku Kaishi / Chemical Society of Japan - Chemistry and Industrial Chemistry Journal

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