Calcium phosphate-based materials of natural origin showing photocatalytic activity

Calcium phosphate based materials of natural origin with photocatalytic properties were produced. Bones of Atlantic cod fish were treated in appropriate solutions (either Ca- or Ti-containing salts) and successively annealed. Results showed multiphasic materials (hydroxyapatite, beta-tricalcium phos...

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Bibliographic Details
Published in:Journal of Materials Chemistry A
Main Authors: Piccirillo, Clara, Dunnill, Charles W., Pullar, Robert C., Tobaldi, David M., Labrincha, Joao A., Parkin, Ivan P., Pintado, Manuela M., Castro, Paula M. L.
Format: Article in Journal/Newspaper
Language:English
Published: ROYAL SOC CHEMISTRY 2013
Subjects:
CHEMICAL-VAPOR-DEPOSITION
THIN-FILMS
HYDROXYAPATITE COATINGS
TRICALCIUM PHOSPHATE
UV-IRRADIATION
ANATASE TIO2
PHASE-CHANGE
TITANIA
SURFACE
DECOMPOSITION
atlantic cod
Online Access:http://hdl.handle.net/10773/19315
https://doi.org/10.1039/c3ta10673j
Description
Summary:Calcium phosphate based materials of natural origin with photocatalytic properties were produced. Bones of Atlantic cod fish were treated in appropriate solutions (either Ca- or Ti-containing salts) and successively annealed. Results showed multiphasic materials (hydroxyapatite, beta-tricalcium phosphate and anatase titania) with excellent photocatalytic performance under both UV and visible light, with an anatase concentration of only about 2 mol%. Results with such a low amount of anatase have never been reported before for a calcium phosphate-based material; this is attributed to the presence of anatase being mainly on the surface. Single-phase hydroxyapatite (Ca-10(PO4)(6)(OH)(2) or HAp) also showed some photocatalytic properties and antibacterial activity.

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