Comparation of photocatalytic rate constants (k) of PCP with different photocatalyst conditions under 3 kinds of UV irradiation.

<p>Comparation of photocatalytic rate constants (k) of PCP with different photocatalyst conditions under 3 kinds of UV irradiation.</p

Comparation of phenol production under different photocatalyst conditions after 2 hours UV irradiation and its percentage of initial PCP.

<p>Comparation of phenol production under different photocatalyst conditions after 2 hours UV irradiation and its percentage of initial PCP.</p

Schematic experimental system for photo degradation experiments.

<p>Schematic experimental system for photo degradation experiments.</p

Photocatalytic degradation of PCP with TiO₂, graphene-TiO₂ and without catalyst under different pH values: (a) pH = 1; (b) pH = 4; (c) pH = 10; (d) pH = 13.

<p>Photocatalytic degradation of PCP with TiO₂, graphene-TiO₂ and without catalyst under different pH values: (a) pH = 1; (b) pH = 4; (c) pH = 10; (d) pH = 13.</p

Photocatalytic rate constants of PCP degradation with different TiO₂ loading, compared with the one of pure UV irradiation.

<p>Photocatalytic rate constants of PCP degradation with different TiO₂ loading, compared with the one of pure UV irradiation.</p

Percentage remained of PCBs after 2 hours photodegradation under UV light with TiO₂, graphene-TiO₂ and without catalyst: (a) congener 8; (b) congener 28; (c) congener 30; (d) congener 31; (e) congener 33; (f) congener 74.

<p>Percentage remained of PCBs after 2 hours photodegradation under UV light with TiO₂, graphene-TiO₂ and without catalyst: (a) congener 8; (b) congener 28; (c) congener 30; (d) congener 31; (e) congener 33; (f) congener 74.</p

Photocatalytic degradation of PCP with TiO₂, graphene-TiO₂ and without catalyst under: (a) 9 W UV light; (b) 300 W UV light.

<p>Photocatalytic degradation of PCP with TiO₂, graphene-TiO₂ and without catalyst under: (a) 9 W UV light; (b) 300 W UV light.</p