Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 21(1), p. 6452
DOI: 10.1039/c3ta10673j
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Calcium phosphate based materials of natural origin with photocatalytic properties were produced. Bones of Atlantic cod fish were treated in appropiate solutions (either Ca- or Ti-containing salts) and successively annealed. Results showed multiphasic materials (hydroxyapatite, -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 (Ca10(PO4)6(OH)2 or HAp) also showed some photocatalytic properties and antibacterial activity.