Fig. 6From: Functionalization of hydroxyapatite derived from cockle (Anadara granosa) shells into hydroxyapatite–nano TiO2 for photocatalytic degradation of methyl violetKinetics of MV degradation by using (a) HAp-nTiO2, (b) TiO2, and (c) HAp [Initial MV concentration = 25 mg L− 1, H2O2 = 10− 4 M, catalyst dosage = 0.25 g L− 1]Back to article page