Ozone decomposition composite catalyst and preparation method thereof

The invention discloses an ozone decomposition composite catalyst and a preparation method thereof. The composite catalyst is prepared by mixing iron modified zeolite and iron modified quartz sand in a mass ratio of 1:4-4:1. The preparation method of the composite catalyst comprises the following steps: modifying zeolite with nano hydroxyl iron oxide to prepare iron modified zeolite, modifying quartz sand with iron ions in an alkalifying mode to prepare the iron modified quartz sand, and proportionally mixing the modified zeolite and the modified quartz sand to obtain the composite catalyst disclosed by the invention. The composite catalyst not only can display the heating of quartz sand to enhance the thermal decomposition action on O3, but also can display the adsorptive decomposition effect of the modified zeolite, and thus, has the advantages of high decomposition rate, high safety, no self consumption, long service life, no harmful substance generation and the like.