کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1265774 | 972238 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A sonochemical method for the preparation of cadmium sulfide and cadmium selenide nanoparticles in aqueous solutions A sonochemical method for the preparation of cadmium sulfide and cadmium selenide nanoparticles in aqueous solutions](/preview/png/1265774.png)
Sonochemistry is a branch of chemistry where sound energy in the form of ultrasound is used to influence the course of reactions. A short-term, local increase in temperature occurs when the solutions and suspensions are irradiated by ultrasound. This happens because the substance absorbs the ultrasound waves. The purpose of this research was the synthesis of CdS and CdSe nanoparticles. We used cadmium sulfate hydrate (CdSO4·8/3H2O), elemental S and Se. Aqueous solutions of NaOH, Na2SO3 and EDTA were used as the solvents.During the syntheses, we used a direct immersion ultrasound probe by vibracell. The device operates with a constant frequency of 20 kHz, with the possibility to change the amplitude and with it the input of energy to the time unit. The products were characterized by X-ray powder diffraction (XRD), thermal analyses (TGA, SDTA) and TEM analyses.
Journal: Ultrasonics Sonochemistry - Volume 17, Issue 5, June 2010, Pages 916–922