Metronidazole modified graphene oxide composite material and preparation method thereof

Abstract

The invention discloses a metronidazole modified graphene oxide composite material. A preparation method of the metronidazole modified graphene oxide composite material comprises the following steps of (1) preparing graphene oxide; (2) stirring and dissolving maleic anhydride into an oil bath pan at a temperature of 75 DEG C, adding the graphene oxide into the dissolved maleic anhydride to reach for 3 h, then adding distilled water and heating up to 86 DEG C to react for 16 h, and finally performing suction filtration, washing, drying and grinding treatments to obtain maleic anhydride modified graphene oxide; (3) dispersing the maleic anhydride modified graphene oxide in dimethyl formamide, then adding metronidazole, dicyclohexyl diimine and 4-dimethylamino-pyridine, and reacting at a temperature of 80 DEG C under the protection of nitrogen gas for 48 h so as to obtain the metronidazole modified graphene oxide composite material. The metronidazole modified graphene oxide composite material has the advantages that the composite material is prepared from conventional materials under mild conditions, and is added into a coating, so that the excellent properties of the composite material and the coating are fully exerted, and the pollution to environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a metronidazole-modified graphene oxide composite material and a preparation method thereof. Background technique [0002] Graphene is a carbon atom with sp 2 The hexagonal lattice planar film composed of hybrid orbitals is a two-dimensional material with a thickness of one or more carbon atoms. It has good electrical conductivity, thermal conductivity, and light transmission, and its mechanical strength is better than other existing materials. In 2004, Novoselov and Geim of the University of Manchester in the United Kingdom successfully prepared two-dimensional graphene crystals that can truly exist independently for the first time by using tape to peel off highly oriented graphite. Graphene has an infinitely repeating periodic structure in the plane, and only nanoscale in the direction perpendicular to the plane, which can be regarded as a nanom...

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Problems solved by technology

[0003] However, when preparing graphene composite materials in the prior art, the utilization of graphene mainly focuses on the carboxyl groups on graphene, but the content of carboxyl groups in the oxidation process is not much, and most of the positions are at the edge of graphene, resulting in graphene The utilization rate of the upper carboxyl group is not high, which makes it difficult to modify graphene with other molecules, and ultimately cannot give full play to the characteristics of graphene materials.

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