Figure 7

(a) Electronic absorption spectra during decolorization of AO7, (b) First-order plot for the degradation of AO7 with (kobs = 0.236 min−1). For reaction conditions: AO7 (1.42 × 10−4 M) with H2O2 (8 × 10−2 M) in the presence of [Co(II) TPHPP]-Cs/GO nanocomposite (15 × 10−3 g/mL) and pH = 9 at 40 °C.