Fig. 7

(a) Methylene blue (10 ppm/50 mL) degradation with ZnO, ZnO@HAp (50 mg), pH 7, and (b) catalyst dosage of ZnO@Hapon MB degradation.
(a) Methylene blue (10 ppm/50 mL) degradation with ZnO, ZnO@HAp (50 mg), pH 7, and (b) catalyst dosage of ZnO@Hapon MB degradation.