Titanium Dioxide-Mediated Photcatalysed Degradation of Two Herbicide Derivatives Chloridazon and Metribuzin in Aqueous Suspensions
Figure 1
(a) Change in concentration as a function of time on irradiation of an aqueous solution of CHL in the presence and absence of photocatalyst. Inset: Change in absorption intensity at 238 nm on irradiation of aqueous suspension of CHL containing TiO2. Experimental conditions: CHL (0.18 mM), mL, 125 W medium pressure mercury lamp, light intensity: 4.88 mW/cm2, irradiation time: 60 min. (b) Change in concentration as a function of time on irradiation of an aqueous suspension of MET in the presence and absence of photocatalyst. Inset: Change in absorption intensity at 295 nm on irradiation of aqueous suspension of MET containing TiO2. Experimental conditions: MET (0.30 mM), mL, 125 W medium pressure mercury lamp, light intensity: 4.88 mW/cm2, Irradiation time: 28 min.
