One-step template-free synthesis of ZnWO4 hollow clusters
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ZnWO4 hollow clusters made up of nanorods were successfully prepared through a tripotassium citrate assisted hydrothermal process at 180 °C. The hollow clusters’ diameter was about 400 nm, and these clusters were made up of nanorods with a diameter of about 10 nm and a length of about 50 nm. X-ray power diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) were used to characterize the structure and morphology of the synthesized products. Based on experiments, the growth of these hollow clusters followed an aggregation-Ostwald ripening process. The photocatalytic activities for aqueous Rhodamine B of samples were investigated, and it was seen that ZnWO4 hollow clusters exhibited a strong photocatalytic activity.
KeywordsPhotocatalytic Activity Hydrothermal Process Hollow Structure Hollow Interior TiO2 Hollow Sphere
We gratefully acknowledge the financial aid from National Nature Science Fund of China and the 973 project of China (grant no. 2005CB623601).
- 14.Zhao X, Zhu YF (2006) Environ Sci Technol 306:58Google Scholar