Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 9 4 2013 12 01 Synthesis and Characterization of Cadmium-Thioacetamide Nanocomposites Using a Facile Sonochemical Approach: A precursor for Producing CdS Nanoparticles via Thermal Decomposition 203 212 4168 EN Maryam Ranjbar Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, I. R. Iran Mostafa Yousefi Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran, I. R. Iran Robabeh Nozari Department of Chemistry, Faculty of Sciences, Islamic Azad University, Shahr-e-Rey Branch, Tehran, I. R. Iran Shabnam Sheshmani Department of Chemistry, Faculty of Sciences, Islamic Azad University, Shahr-e-Rey Branch, Tehran, I. R. Iran Journal Article 2013 08 25 In this investigation, we report facile synthesis of cadmium(II)-thioacetamide nanocomposites in the presence and absence of polyvinyl alcohol under ultrasonic irradiations, using cadmium acetate dihydrate (Cd(CH3COO)2.2H2O), potassium iodide (KI), thioacetamide (TAA, CH3CSNH2), and polyvinyl alcohol (PVA) as the starting materials. Results show that in the presence of polyvinyl alcohol sizes of the particles reduce. Characterization of the compounds was carried out by determination of melting point, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared (FT-IR) spectroscopy, 1H-NMR spectroscopy and thermogravimetric-differential thermal analyses (TG/DTA). The thermal decomposition of the polymeric nanocomposite, Cd-thioacetamide/PVA in an autoclave under critical condition led to the formation of spherical cadmium sulfide nanoparticles with an average particle size of about 20 nm. The X-ray diffraction pattern at room temperature revealed that highly pure and crystallized CdS with hexagonal structure were obtained. The sonochemical method resulted in a significant reduction of reaction time, reaction temperature and particle size of the products. https://www.ijnnonline.net/article_4168_e46bc064f8e92ac2c404b9871b2a4ef2.pdf