The microwave synthesis route employed for the preparation of cadmium metal oxide nanoparticles. Crystalline CdCO₃ has been synthesized at nanoscale through a reaction of cadmium acetate with tetramethyammoniumhydroxide (TMAH) and surfactant polyvinyl alcohol (PVA) at different temperatures and with different aging times. By heating synthesized CdCO₃ at different temperatures 400 °C and 700 °C, the CdO nanocrystals are obtained. Debye-Scherrer’s formula is used to calculate the particle size and the calculated value is 22.87nm. Band gap energy has been calculated for the prepared CdCO₃ and CdO from the UV-Visible spectrum. The band gap value for CdO obtained as 0.0766 eV. While CdO converted into nano-sized particles, the free movements of asymmetric and symmetric stretching are blocked which behavior is observed from FT-IR spectrum. TEM images give the clear morphological appearance of CdO nanoparticles. The present successive simple process can be easily implement to prepare CdO nanoparticles with the low cost of investment in a short time period.
Keywords: Cadmium carbonate; Cadmium oxide; TMAH; PVA