▎ 摘　　要

NOVELTY - Filter comprises graphene sponge. The graphene sponge is produced by (a) reacting the mixture containing oxidized graphene solution and ascorbic acid solution at 100 degrees C, reducing the oxidized graphene to form reduced oxidized graphene and a self-assembly of the reduced oxidized graphene, and (b) lyophilizing the reduced self-assembly of the oxidized graphene to form a graphene sponge. The graphene sponge has a three-dimensional structure with fine pores, and hydrophobic and lipophilic properties. The pore has size of 70-120 mu m, and average pores size of 100 mm. USE - The filter is useful for continuously separating water-oil mixture (claimed). DETAILED DESCRIPTION - Filter comprises graphene sponge. The graphene sponge is produced by (a) reacting the mixture containing oxidized graphene solution and ascorbic acid solution at 100 degrees C, reducing the oxidized graphene to form reduced oxidized graphene, and forming a self-assembly of the reduced oxidized graphene, and (b) lyophilizing the reduced self-assembly of the oxidized graphene to form a graphene sponge. The graphene sponge has a three-dimensional structure with fine pores, and hydrophobic and lipophilic properties. The pore has size of 70-120 mu m, and average pores size of 100 mm. The water is separated through the filter under pressure after passing water-oil mixture through the filter in atmospheric pressure. The filter cuts the graphene sponge into a cylindrical shape and introduces into a donut-shaped acrylic substrate. The gap between the base material and the graphene sponge is sealed by fixing the base material and epoxy adhesive to flow fluid through the graphene sponge filter.