▎ 摘　　要

NOVELTY - Flexible and self-supporting graphene oxide paper preparation involves mixing 2-20 ml 1 mg/ml soluble palladium-containing precursor and 5-2000 mg polyvinylpyrrolidone, and then diluting with 70 ml deionized water with stirring ultrasonically to obtain brown solution. The obtained mixed solution is heated in water bath at 80-100 degrees C with 2-30 ml 85 wt.% hydrazine hydrate solution with stirring for 0.5-3 hours. The reaction mixture is cooled at room temperature, and then dispersion ultrasonically for 0.5-3 hours. The ultrasonically dispersed solution is poured into a suction filter, and then vacuum-filtered by using a water filtration membrane having a pore size of 0.22-0.45 mu m. The filter is removed from the suction filter, left at room temperature for 10-15 hours, and then peeled off finally to obtain the flexible and self-supporting graphene oxide paper. USE - Method for preparing flexible and self-supporting graphene oxide paper for preparing glucose sensor (claimed). ADVANTAGE - The method prepares the flexible and self-supporting graphene oxide paper in a simple, cost-effective and eco-friendly manner with fast response to glucose, a wide linear response range, and high sensitivity. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron microscopic image of the prepared flexible and self-supporting graphene oxide paper.