▎ 摘　　要

NOVELTY - Carrier composition comprises iron oxide oxidized graphene nano-structure. USE - The carrier composition is useful as biocatalyst for immobilizing enzyme which is used for decolorizing dye in wastewater (all claimed) and in medicine and food-related industry. ADVANTAGE - The carrier composition immobilizes enzyme cost-effectively. The immobilized enzyme maintains activity of enzyme for long period of time. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) enzyme immobilization method; (2) method for collecting immobilized enzyme; (3) immobilized enzyme; and (4) decolorizing method of dye in wastewater.