Fig. 20

Fluorescence intensity of coumarin solution in the presence of KL/TiO2-0.5, KL/TiO2-1.0, KL/TiO2-1.5 and KL/TiO2-2.0 at 460 nm against sunlight illumination time
Fluorescence intensity of coumarin solution in the presence of KL/TiO2-0.5, KL/TiO2-1.0, KL/TiO2-1.5 and KL/TiO2-2.0 at 460 nm against sunlight illumination time