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Abstract
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 (CdSO(4).8/3H(2)O),
elemental S and Se. Aqueous solutions of NaOH, Na(2)SO(3) 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.