Calcium phosphate-based materials of natural origin showing photocatalytic activity

Clara Piccirillo*, Charles W. Dunnill, Robert C. Pullar, David M. Tobaldi, João A. Labrincha, Ivan P. Parkin, Manuela M. Pintado, Paula M. L. Castro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)


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, β-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.
Original languageEnglish
Pages (from-to)6452-6461
Number of pages10
JournalJournal of Materials Chemistry A
Issue number21
Publication statusPublished - 7 Jun 2013


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