Fig. 15

(a) Photocatalytic degradation curve for the degradation of CR dye by prepared catalysts or in the absence of the catalyst, (b) ln (C_o/C_t) vs time plot for the CR dye degradation with the help of prepared Ba_1-xCo_xFe₁₂O₁₉ (x = 0.00–0.06) catalysts.