Department of Physics, Savitribai Phule Pune University, Pune 411007, India.
Department of Physics, The Institute of Science, Mumbai, India.
Ultrason Sonochem. 2018 Jul;45:116-122. doi: 10.1016/j.ultsonch.2018.02.052. Epub 2018 Mar 17.
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.
本工作研究了在超声辐射存在下制备 WO 和 WO-ZnO 纳米复合材料，并将其用于超声催化降解亮蓝染料。WO-ZnO 纳米复合材料采用一步原位超声辅助法制备。成功制备的 WO 和 WO-ZnO 纳米复合材料采用 XRD、拉曼、BET、FE-SEM 和 EDS 等多种表征技术进行了表征。XRD 图谱表明，分别形成了 WO 的单斜晶和 ZnO 的六方晶结构。BET 研究表明，WO-ZnO 纳米复合材料的比表面积大于 WO。EDS 研究证实了 WO-ZnO 纳米复合材料的形成。此外，还将制备的 WO 和 WO-ZnO 纳米复合材料用作超声催化剂，用于降解亮蓝染料。作为初始浓度亮蓝染料的函数，评估了速率常数（k）。结果表明，与 WO 光催化剂相比，WO-ZnO 纳米复合材料表现出最大的超声催化活性。
