The synthesis of CdO-ZnO composite nanomaterial by sol-gel method give by,

takes 88 g of a mixed ethanol-water (50:50) solvent was used to dissolve 2 g zinc nitrate, 2 g cadmium nitrate, and 8 g PVA. The mixture was heated to 80°C to form a homogeneous sol solution. The obtained sol was slowly heated to evaporate the solvent and form a hard homogenous gel. The pyrrolysis of the final gel was performed at temperature of 600°C for 8 hours. During the pyrrolysis process, the PVA polymeric network was slowly burnt through the outer surface; zinc and cadmium nitrate salts were simultaneously calcinated and converted into the CdO-ZnO nanocomposite. The obtained samples were crushed to prepare a fine powder. The morphology and particles sizes of the samples were analyzed by the SEM, TEM, XRD and EDX.

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