1College of Science, School of Chemistry, University of Tehran, Tehran, Iran
2Department of Physical Chemistry, School of Chemistry,College of Science, University of Tehran, Tehran, Iran
چکیده
over the past few years, visible-light-driven photocatalysts have attracted much intensive research attechment worldwide because photocatalytic processes could be intensively applied in various fields, such as environmental pollution control, and synthesis of different nanomaterials. In this Work, we construct the novel binary ZnO/Bi7O9I3 (30%) nanocomposite by a facile sol-gel method as novel visible-light-illumination photocatalysts. The properties of these photocatalysts were characterized by various techniques such as XRD, FESEM, FT-IR .The photocatalytic ability of the ZnO/Bi7O9I3 (30%) sample was examined by degradation of Rhodamine B (RhB) dye as water contamination under visible light irradiation. The results showed that the ZnO/Bi7O9I3 (30%) nanocomposite highest photocatalytic performance, which was 15 times as high as that of pure ZnO. This result, could be attributed to the increment of the visible light absorption by narrow band gap Bi7O9I3 semiconductor and structure of the heterojunction between ZnO and Bi7O9I3, which is favorable for swift separation of the photoinduced charge carriers. Finaly, This paper may provide some intelligence into the design of novel visible-light photocatalysts.
