| Abstract: | The heterojunction strategy was used to overcome the drawbacks of AgIO_3 for its wide band gap and of BiVO_4 for its low charge-separation efficiency. The photocatalytic per-formances of the as-prepared AgIO_3/BiVO_4 were assessed by the photodegradation of rhodamine B(Rh B) and tetracycline hydrochloride antibiotics(TC) under visible-light irradiation. All the as-prepared samples showed remarkable enhanced photocatalytic efficiency than pure AgIO_3 and BiVO_4. Especially, 40% AgIO_3/BiVO_4 exhibited optimum photocatalytic activities among all the prepared samples. The improvements may be ascribed to the synergetic effect between AgIO_3 and BiVO_4 including matching potentials and effective charge separation. Radical trap experiments determined that h+ radical plays a significant role in the photodegradation of RhB while e-is not the dominating reactive species. |
