Sonosynthesis and Characterization of TiO_2/ZrO_2 Nanocomposite and Photocatalytic degradation of Congo red Dye under UV Light

Nanotio_2, nano zro_2 and tio-2/zro-2 nanocomposite were prepared via sol gel method by using ultrasonic irradiation. the precursor sol of zirconium was prepared from an aqueous solution of zrcl_4 and titanium tetra 2-propoxide was diluted by 2-propanol and deionized water the tio_2/zro_2 nanocomposite was synthesized from directly mixing titanium dried gel into zirconium gel. the reaction mixture was placed under ultrasonic irradiation probe for 2 hours. the filtrated composite gel was washed and calcinated at 500 °c for 3h in furnace. the ft-ir spectroscopy and the xrd study were exhibited that the crystal structure and purity of the tio_2/zro_2 nano composite fesem images were indicated the morphology and the average size of the nps. the mean crystallite size of the nanotio_2, nano zro_2 and tio_2/zro_2 nanocomposite were determined 57, 19 and 23 nm respectively. the photocatalytic performance was highly increased when nano-composite of tio_2/zro_2 was used to degradation of congo red (cr) solution. the tio_2/zro_2 nano composite was shown higher photo-degradation efficiency than the pure nanotio_2 and nano zro_2.