Ultrasound tailoring of industrially important nano particles

The behaviour of particles can be tailored effectively to suit the industrial and medical needs of the modern society when their size has been reduced from macro or micro to nano dimension. Normally this particle size reduction has been achieved by chemical synthesis method. However non conventional techniques like ultrasound is more eco and environmental friendly one. The efficiency in size reduction is also much better when we apply the correct frequency for the desired application. The ZnSe nanoparticles have wide-ranging applications in opto elctronics and photo acoustic industries. Many researchers tried the preparation of ZnSe nano particles by chemical techniques in the past while in the present work much attention was paid on the non conventional preparation method ie., ultrasound technique to achieve efficiency in the preparation. In the present study ZnSe nanoparticles were prepared by Chemical Method and the influence of ultrasound during synthesis has been tested separately. The pr epared nanostructures were characterized by using powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The size of nano particles was estimated by Scherrer's equation. It has been found that the ultrasound at high frequencies does a wonderful to achieve more finer nano particles of ZnSe and it is less hazardous and more environmental friendly. Index terms: Ultrasound, High frequency, ZnSe, Nano particles, Chemical method, SEM micrograph, Powder XRD.