Fig. 9

(a) Methylene blue (10 ppm/50 mL) degradation absorption spectra with ZnO@HAp (50 mg), pH 7, and (b) Tauc plot of prepared ZnO@HAp.
(a) Methylene blue (10 ppm/50 mL) degradation absorption spectra with ZnO@HAp (50 mg), pH 7, and (b) Tauc plot of prepared ZnO@HAp.