▎ 摘　　要

NOVELTY - Manufacture of polynorepinephrine/reduced graphene oxide film involves preparing graphene oxide film, immersing graphene oxide film in a buffer solution containing norepinephrine precursor, and agitating. USE - Manufacture of polynorepinephrine/reduced graphene oxide film used as redox mediator in artificial photosynthesis system for water degradation reaction to obtain electrons for producing environmentally-friendly biofuel (all claimed). ADVANTAGE - The method provides polynorepinephrine/reduced graphene oxide film which enhances electron transfer efficiency, which in turn enhances efficiency of the water degradation reaction using the artificial photosynthesis system. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for usage of polynorepinephrine/reduced graphene oxide film as redox mediator in artificial photosynthesis system for water degradation reaction to obtain electrons for producing an environmentally-friendly biofuel.