Hydroxyapatite nanocrystals synthesized from calcium rich bio-wastes

Dariela Núñez; Elizabeth Elgueta; Kokkarachedu Varaprasad; Patricio Oyarzún

doi:10.1016/j.matlet.2018.07.077

Hydroxyapatite nanocrystals synthesized from calcium rich bio-wastes

Dariela Núñez^*, Elizabeth Elgueta, Kokkarachedu Varaprasad, Patricio Oyarzún

^*Corresponding author for this work

Centro de Investigación de Polímeros Avanzados

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

67 Scopus citations

Abstract

Hydroxyapatite nanocrystals were synthesized by wet chemical precipitation using bio-waste shells of mollusk (clam and mussel) and egg as feedstock materials. The powdered shells were calcined, dissolved in water, and the resulting product was reacted with phosphoric acid. X-ray diffraction analysis identified pure phase of hydroxyapatite for the three different raw materials. Transmission electron microscopy observations of hydroxyapatite indicated that rod-like crystals were produced in nanometric scale, which showed pH-dependent surface charges using zeta potential analysis. Overall, this study proved that calcium-rich bio-wastes are valuable materials to be used as feedstock for production of high purity and economically feasible hydroxyapatite nanocrystals for biomedical and technological applications.

Original language	English
Pages (from-to)	64-68
Number of pages	5
Journal	Materials Letters
Volume	230
DOIs	https://doi.org/10.1016/j.matlet.2018.07.077
State	Published - 2018

Bibliographical note

Publisher Copyright:
© 2018

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2018.07.077

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title = "Hydroxyapatite nanocrystals synthesized from calcium rich bio-wastes",

abstract = "Hydroxyapatite nanocrystals were synthesized by wet chemical precipitation using bio-waste shells of mollusk (clam and mussel) and egg as feedstock materials. The powdered shells were calcined, dissolved in water, and the resulting product was reacted with phosphoric acid. X-ray diffraction analysis identified pure phase of hydroxyapatite for the three different raw materials. Transmission electron microscopy observations of hydroxyapatite indicated that rod-like crystals were produced in nanometric scale, which showed pH-dependent surface charges using zeta potential analysis. Overall, this study proved that calcium-rich bio-wastes are valuable materials to be used as feedstock for production of high purity and economically feasible hydroxyapatite nanocrystals for biomedical and technological applications.",

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doi = "10.1016/j.matlet.2018.07.077",

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T1 - Hydroxyapatite nanocrystals synthesized from calcium rich bio-wastes

AU - Núñez, Dariela

AU - Elgueta, Elizabeth

AU - Varaprasad, Kokkarachedu

AU - Oyarzún, Patricio

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Hydroxyapatite nanocrystals were synthesized by wet chemical precipitation using bio-waste shells of mollusk (clam and mussel) and egg as feedstock materials. The powdered shells were calcined, dissolved in water, and the resulting product was reacted with phosphoric acid. X-ray diffraction analysis identified pure phase of hydroxyapatite for the three different raw materials. Transmission electron microscopy observations of hydroxyapatite indicated that rod-like crystals were produced in nanometric scale, which showed pH-dependent surface charges using zeta potential analysis. Overall, this study proved that calcium-rich bio-wastes are valuable materials to be used as feedstock for production of high purity and economically feasible hydroxyapatite nanocrystals for biomedical and technological applications.

AB - Hydroxyapatite nanocrystals were synthesized by wet chemical precipitation using bio-waste shells of mollusk (clam and mussel) and egg as feedstock materials. The powdered shells were calcined, dissolved in water, and the resulting product was reacted with phosphoric acid. X-ray diffraction analysis identified pure phase of hydroxyapatite for the three different raw materials. Transmission electron microscopy observations of hydroxyapatite indicated that rod-like crystals were produced in nanometric scale, which showed pH-dependent surface charges using zeta potential analysis. Overall, this study proved that calcium-rich bio-wastes are valuable materials to be used as feedstock for production of high purity and economically feasible hydroxyapatite nanocrystals for biomedical and technological applications.

KW - Clam shells

KW - Eggshells

KW - Hydroxyapatite

KW - Mussel shells

KW - Nanocrystals

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JO - Materials Letters

JF - Materials Letters

ER -

Hydroxyapatite nanocrystals synthesized from calcium rich bio-wastes

Abstract

Bibliographical note

ASJC Scopus subject areas

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