EFFECT OF CRYSTALLIZATION TIME ON HYDROTHERMAL SYNTHESIS AND PHYSICOCHEMICAL CHARACTERIZATION OF CUO/ZNO/AL2O3 NANOPOWDER

Hydrothermally synthesis of CuO/ZnO/Al2O3 nanopowder successfully carried out. The effect of crystallization time on product properties wasobserved and 6 h reaction time, based on powderXRD analysis and FESEM imaging, was selected as the best crystallization duration in range of 3-12 h.Nanopowders were characterized using XRD, FESEM, EDX mapping, FTIR, TG and BET techniques. The XRD patterns confirmed crystallinemetal oxide formation. Good crystallinity of samples was observed with FESEM image which confirmed XRD analysis results. Scherrer equation calculationsshowed average crystallite size of 20 nm for productsand FESEM images showed nano scale particles. The BES surface area measurement showed acceptablevalues for synthesized CZA samples. FTIR spectroscopy confirmed metal oxides formation during hydrothermal and calcination process. TGA results illustrated high thermal stability of the synthesized nanopowders