Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5144576 | Ultrasonics Sonochemistry | 2017 | 33 Pages |
Abstract
In this research, the effect of ultrasonic irradiation power (0, 75, 150 and 200Â W) and time (0, 5, 15 and 20Â min) on the structure, morphology and photocatalytic activity of zinc oxide nanoparticles synthesized by sol-gel method was investigated. Crystallographic structures and the morphologies of the resultant powders were determined by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD patterns showed that ZnO samples were crystallized in their pure phase. The purity of samples was increased by increasing the ultrasonic irradiation power and time. Not only did ultrasonic irradiation unify both the structure and the morphology, but also it reduced the size and prohibited particles from aggregation. The optical behavior of the samples was studied by UV-vis spectroscopy. Photocatalytic activity of particles was measured by degradation of methyl orange under radiation of ultraviolet light. Ultrasound nanoparticles represented higher degradation compared to non-ultrasound ones.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Reza Mahdavi, S. Siamak Ashraf Talesh,