▎ 摘　　要

NOVELTY - Immobilized biological enzyme microreactor based on starch-based nanomaterials, is claimed. The Immobilizing biological enzyme microreactor based on starch-based nanomaterials is obtained by adding starch hydrogel, graphene oxide to obtain a starch hydrogel modified by graphene oxide, and using the hydrogel as a carrier, immobilizing the biological enzyme microreactor obtained by the biological enzyme through electrostatic interaction and hydrogen bonding, where the biological enzyme comprises horseradish peroxidase, catalase, hemoglobin, chloroperoxidase and/or cytochrome c. USE - The starch-based nanomaterial-immobilized biological enzyme microreactor is useful in degrading bisphenol A in wastewater, and degrading 2,4-dichlorophenol in wastewater, where the biological enzyme is horseradish peroxidase (all claimed). ADVANTAGE - The biological enzyme microreactor has low production cost and has industrial application prospects, high specific surface area and rich in hydrophilic groups including hydroxyl groups, which not only retains the high catalytic activity of the free enzyme, increases the loading capacity of the enzyme; has good catalytic activity, thermal stability and reusability.