Immobilization of catalase by using Zr(IV)-modified collagen fiber as the supporting matrix

► A novel bioaffinity support, Zr(IV)-modified collagen fiber, was prepared and used in the immobilization of catalase. ► The loading enzyme amount and retained activity of immobilized catalase are both at a high lever compared with other related studies. ► The thermal, storage stability and reusability of the immobilized catalase are largely improved after the immobilization process.