Easy Preparative Route for ZnO Nanoparticles Using Tetrabutylammonium Bromide Assisted Ultrasonic Irradiation

摘要

In this work, ZnO nanoparticles were prepared by an ultrasonic irradiation method in presence of tetrabutylammonium bromide (TBAB) as surfactant. The nanostructures were characterized by X-ray diffraction (XRD), Energy Dispersive X-ray Analysis (EDAX) and Transmission Electron Microscopy (TEM). The measurements showed highly crystalline material with ZnO nanostructures size of about 25 × 100 nm. Their optical properties were also evaluated from UV-vis and photoluminescence (PL) spectra. UV-vis spectroscopy study revealed that as ultrasonic irradiation time increases, there is increase in amount of ZnO nanoparticles formed and also there is a red shift in the absorption edge. PL spectra depicted that the ZnO nanostructures display violet visible light emitting band. The formation of fluorescent nanostructures stable in aqueous media is highly desirable in many potential applications, including biological labels (has a high potential for specific targeting in bioimaging probes and for recognition studies in biosensing applications).