724095.fig.005a
(a)
724095.fig.005b
(b)
Figure 5: Effect of TiO2 concentration on phenol conversion. Experimental conditions: initial phenol concentration = 0.536 mM; pH = 5.9;  K. (a) Variations of values during phenol photodegradation: 1—1 g·L−1; 2—2 g·L−1; 3—3 g·L−1, 4—0.5 g·L−1, 5—0.2 g·L−1; (b) and values of phenol solution after reaction.