In this paper CuFe2O4, nanocrystalline powders were prepared. Also, the supported Cu ferrite was obtained by impregnation of the supports with Cu and Fe nitrates solutions, for calcination temperature 450 ºC. The samples were characterized by X-ray powder diffraction (XRD) and Fourier transform-infrared spectroscopy (FT-IR). Photocatalytic degradation of acid red 206 in water was studied. CuFe2O4 was supported on Clinoptilolite using solid-state dispersion (SSD) method. The results show that the CuFe2O4/zeoliteis an active photocatalyst. The maximum effect of photodegradation was observed at 10 wt. %CuFe2O4, 90 %wt. Clinoptilolite. A first order reaction with k = 0.123 min-1 was observed. The effects of some parameters such as pH, amount of photocatalyst, initial concentration of dye were examined. پرونده مقاله

The complexation reactions between Cu2+, Pd2+ and Ni2+ metal ions with promethazine (PM) in water or DMF were studied by the spectrophotometric methods at [(15, 25,35 and 45±0.1) °C]. The complexation process was optimized in terms of pH, temperature and contact time. The stoichiometry of the complex was found to be 1:1 (metal ion/ligand). The formation constants of the resulting complexes were determined from computer fitting absorbance-mole ratio data. The values of the thermodynamic parameters for complexation reactions were obtained from the temperature dependence of the stability constants. The proposed method was successfully applied for the determination of PM in their dosage forms. پرونده مقاله