Cerium oxide nanoparticle modified zinc tungstate nanorod ultrasonic visible light composite catalyst and preparation method thereof

The invention relates to a cerium oxide nanoparticle modified zinc tungstate nanorod ultrasonic visible light composite catalyst and a preparation method thereof.The preparation method comprises the steps that zinc tungstate nanopowder is prepared through a hydrothermal method, then the zinc tungstate nanopowder and a cerous nitrate solution are mixed, urea is added, centrifugal separation is conducted after pH is adjusted, a product is calcined after being dried, and the cerium oxide nanoparticle modified zinc tungstate nanorod ultrasonic visible light composite catalyst is obtained. The obtained zinc tungstate/cerium oxide nano composite material contains two phases of ZnWO4 and CeO2, the mass fraction of CeO2 in the zinc tungstate/cerium oxide nano composite material is 1-10%, ZnWO4 is of a rod-like structure, the diameter of ZnWO4 is 20-40 nm, and CeO2 nano particles with the diameter of 3-10 nm are grown on the surface of a ZnWO4 nanorod in an attached mode. The prepared zinc tungstate/cerium oxide ultra