Abstract

In this study, hierarchically macro/mesoporous silica sphere (HMMS) with structural macropores and skeleton mesopores was fabricated and adopted as an ideal carrier for immobilization of catalase (CAT). Compared with a commercial mesoporous silica (CMS) carrier, HMMS can immobilize much more CAT (270–300mg/g carrier) than the CMS (90–120mg/g carrier). Moreover, the immobilized CAT on HMMS exhibits comparable catalytic efficiency to the carrier-free CAT, and possesses appreciable reusability. These superiorities make HMMS a promising carrier for enzyme immobilization.

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