Ultrasound assisted synthesis of WO-ZnO nanocomposites for brilliant blue dye degradation.

The present work deals with the preparation of WO and WO-ZnO nanocomposites in presence of ultrasonic irradiation, and its use in the sonocatalytic degradation of brilliant blue dye. WO-ZnO nanocomposite is prepared using one step in-situ ultrasound assisted method. The successfully prepared WO and WO-ZnO nanocomposites were characterized using different characterization techniques such as XRD, Raman, BET, FE-SEM and EDS. The XRD pattern reveals that the formation of monoclinic and hexagonal crystal structures of WO and ZnO respectively. BET study shows that WO-ZnO nanocomposite have maximum surface area than that of the WO. EDS study confirms the formation of WO-ZnO nanocomposites. Further the use of the prepared WO and WO-ZnO nanocomposites as a sonocatalyst for the degradation of brilliant blue dye. The rate constant (k) was evaluated as a function of the initial concentration of brilliant blue dye. It is found that WO-ZnO nanocomposites exhibits maximum sonocatalytic activity as compared to WO photocatalyst.