Titanium Dioxide-Mediated Photcatalysed Degradation of Two Herbicide Derivatives Chloridazon and Metribuzin in Aqueous Suspensions

Figure 2

Influence of pH on the degradation rate of CHL and MET. Experimental conditions: CHL (0.18 mM), MET (0.30 mM), initial reaction pH of CHL (3.2, 6.2, 9.2, and 12), initial reaction pH of MET (3.5, 6.5, 9.5, and 12), 𝑉=125 mL, photocatalyst: TiO₂ Degussa P25 (1 gL⁻¹), irradiation time: 60 min (CHL), 28 min (MET).