Fig. 3From: Functionalization of hydroxyapatite derived from cockle (Anadara granosa) shells into hydroxyapatite–nano TiO2 for photocatalytic degradation of methyl violetSEM profile and EDX spectra of (a) Cockle shell, (b) CaO, (c) HAp, and (d) HAp-nTiO2Back to article page