超声辐射对电化学合成 ZnO 纳米结构的影响。
Ultrasonic irradiation effects on electrochemical synthesis of ZnO nanostructures.
机构信息
Department of Solid State Physics, Faculty of Physics, K. N. Toosi University of Technology, POB 15875-4416, Tehran, Iran.
Department of Solid State Physics, Faculty of Physics, K. N. Toosi University of Technology, POB 15875-4416, Tehran, Iran.
出版信息
Ultrason Sonochem. 2014 Jul;21(4):1435-40. doi: 10.1016/j.ultsonch.2014.01.013. Epub 2014 Jan 31.
In the present article, electrochemical synthesis of ZnO nanostructures in presence of ultrasonic irradiation is investigated. The ultrasonic bath use for synthesis is calibrated using hydrophone method so that its frequency and acoustic power were obtained. From the results of the experimentation the role of ultrasonic irradiation in synthesis of ZnO nanoparticles is discussed. Diameter of the ZnO nanoparticles produced in the electrolyte was compared and investigated in absence and presence of the ultrasonic irradiation utilizing UV-visible photo-spectrometer. Then electrodeposited ZnO layer on the ITO glass as cathode's surface in absence and presence of the ultrasonic irradiation were studied by UV-visible photo-spectrometer and field emission scanning electron microscopy (FE-SEM) and the results were compared. FE-SEM micrographs show, higher growth of nanosheets on the cathode electrode in presence of ultrasonic irradiation. Experiment shows synthesis of ZnO nanoparticles in presence of the ultrasonic irradiation happen 10 times faster.
在本文中，研究了超声辐射存在下电化学合成 ZnO 纳米结构。超声浴的合成采用水听器法进行校准，以获得其频率和声功率。根据实验结果，讨论了超声辐射在 ZnO 纳米粒子合成中的作用。利用紫外可见分光光度计比较和研究了在没有和存在超声辐射的情况下电解液中 ZnO 纳米粒子的直径。然后，在没有和存在超声辐射的情况下，通过紫外可见分光光度计和场发射扫描电子显微镜（FE-SEM）研究了 ITO 玻璃作为阴极表面的电沉积 ZnO 层，并对结果进行了比较。FE-SEM 显微照片显示，在超声辐射存在下，阴极电极上纳米片的生长更高。实验表明，在超声辐射存在下合成 ZnO 纳米粒子的速度快 10 倍。
Zotero 插件