Synthesis and crystallization of macroporous hydroxyapatite

S. Madhavi; C. Ferraris; T. J. White

doi:10.1016/j.jssc.2005.06.039

Synthesis and crystallization of macroporous hydroxyapatite

S. Madhavi^*, C. Ferraris, T. J. White

^*Corresponding author for this work

Nanyang Technological University

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

53 Citations (Scopus)

Abstract

Macroporous hydroxyapatite Ca₁₀(PO₄) ₆(OH)₂ was synthesized using ordered polystyrene sphere templates that were impregnated with a calcium phosphate precursor solution which was allowed to solidify followed by sintering from 500 to 1000°C in flowing oxygen to remove the polymer and crystallize the phosphates. Using a combination of diffraction and imaging the face-centered cubic macroporous framework was shown to have pore diameters of 0.8-0.9 μm and to be composed of hydroxyapatite (80-98 wt%) and X-ray diffraction amorphous material (14-55%), the proportions dependent on the duration and temperature of heat treatment. At lower sintering temperatures the HAp is calcium deficient. Ion exchange of calcium by cadmium demonstrated the potential of this material for hazardous waste remediation.

Original language	English
Pages (from-to)	2838-2845
Number of pages	8
Journal	Journal of Solid State Chemistry
Volume	178
Issue number	9
DOIs	https://doi.org/10.1016/j.jssc.2005.06.039
Publication status	Published - Sept 2005
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Keywords

3DOM
Hydroxyapatite
Ion-exchange
Macroporous

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jssc.2005.06.039

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title = "Synthesis and crystallization of macroporous hydroxyapatite",

abstract = "Macroporous hydroxyapatite Ca10(PO4) 6(OH)2 was synthesized using ordered polystyrene sphere templates that were impregnated with a calcium phosphate precursor solution which was allowed to solidify followed by sintering from 500 to 1000°C in flowing oxygen to remove the polymer and crystallize the phosphates. Using a combination of diffraction and imaging the face-centered cubic macroporous framework was shown to have pore diameters of 0.8-0.9 μm and to be composed of hydroxyapatite (80-98 wt\%) and X-ray diffraction amorphous material (14-55\%), the proportions dependent on the duration and temperature of heat treatment. At lower sintering temperatures the HAp is calcium deficient. Ion exchange of calcium by cadmium demonstrated the potential of this material for hazardous waste remediation.",

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author = "S. Madhavi and C. Ferraris and White, \{T. J.\}",

year = "2005",

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doi = "10.1016/j.jssc.2005.06.039",

language = "English",

volume = "178",

pages = "2838--2845",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Synthesis and crystallization of macroporous hydroxyapatite

AU - Madhavi, S.

AU - Ferraris, C.

AU - White, T. J.

PY - 2005/9

Y1 - 2005/9

N2 - Macroporous hydroxyapatite Ca10(PO4) 6(OH)2 was synthesized using ordered polystyrene sphere templates that were impregnated with a calcium phosphate precursor solution which was allowed to solidify followed by sintering from 500 to 1000°C in flowing oxygen to remove the polymer and crystallize the phosphates. Using a combination of diffraction and imaging the face-centered cubic macroporous framework was shown to have pore diameters of 0.8-0.9 μm and to be composed of hydroxyapatite (80-98 wt%) and X-ray diffraction amorphous material (14-55%), the proportions dependent on the duration and temperature of heat treatment. At lower sintering temperatures the HAp is calcium deficient. Ion exchange of calcium by cadmium demonstrated the potential of this material for hazardous waste remediation.

AB - Macroporous hydroxyapatite Ca10(PO4) 6(OH)2 was synthesized using ordered polystyrene sphere templates that were impregnated with a calcium phosphate precursor solution which was allowed to solidify followed by sintering from 500 to 1000°C in flowing oxygen to remove the polymer and crystallize the phosphates. Using a combination of diffraction and imaging the face-centered cubic macroporous framework was shown to have pore diameters of 0.8-0.9 μm and to be composed of hydroxyapatite (80-98 wt%) and X-ray diffraction amorphous material (14-55%), the proportions dependent on the duration and temperature of heat treatment. At lower sintering temperatures the HAp is calcium deficient. Ion exchange of calcium by cadmium demonstrated the potential of this material for hazardous waste remediation.

KW - 3DOM

KW - Hydroxyapatite

KW - Ion-exchange

KW - Macroporous

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DO - 10.1016/j.jssc.2005.06.039

M3 - Article

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JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

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ER -

Synthesis and crystallization of macroporous hydroxyapatite

Abstract

ASJC Scopus Subject Areas

Keywords

UN SDGs

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