▎ 摘　　要

NOVELTY - Preparing of Copper/Graphene oxide (Cu/GO) single atom catalytic nano -enzyme involves dropping the 1-2 mg/mL oxidized graphene slurry into the copper foam and nitrogen dry at room temperature; dipping the copper foam of the oxidized graphene slurry into ethanol, ultrasonically processing for 2-3 hours, under the frequency of 35-50 KHz; centrifuging the copper foam after ultrasonic treatment to obtain precipitate; and cleaning the precipitate to dry the product. USE - Method for preparing of copper/graphene oxide single atom catalytic nano -enzyme for removing super oxide free radical in cigarette smoke or used in the medicine for preventing lung injury and inflammation caused by preparation and/treating preventing smoking (all claimed). ADVANTAGE - The method is simple and controllable, the cost is low, and it is easy to realize industrial production.