Fig. 9From: Functionalization of hydroxyapatite derived from cockle (Anadara granosa) shells into hydroxyapatite–nano TiO2 for photocatalytic degradation of methyl violetDegradation efficiency and TON at varied photocatalyst dosage of (a) photooxidation using TiO2, (b) photooxidation using HAp-nTiO2, (c) photocatalysis using TiO2, and (d) photocatalysis using HAp-nTiO2 [Initial MV concentration = 25 mg L− 1, H2O2 = 10− 4 M, TON values are calculated from 30 min of treatment]Back to article page