Preparation method of graphene-based ferroferric oxide nano-composite material

Abstract

The invention relates to a graphene-based ferroferric oxide nano-composite material and especially relates to a preparation method of the graphene-based ferroferric oxide nano-composite material and belongs to the technical field of novel carbon-based nano-composite materials. The preparation method comprises the following steps that graphite oxide, a soluble ferric salt and a hydrazine hydrate reducing agent are subjected to uniform ultrasonic mixing; and the mixture undergoes a one-step hydrolysis reaction at a certain temperature to produce the graphene-based nano-composite material. The preparation method can realize loading of ferroferric oxide nano-particles having uniform sizes and controllable morphology on graphene. The graphene-based ferroferric oxide nano-composite material obtained by the preparation method has a large specific surface area and high saturation induction density and can be used as a sewage treatment agent having a good dye and heavy metal ion adsorption capability. The preparation method has simple processes and a low cost and is suitable for industrial production.

Description

technical field [0001] The invention relates to a graphene-based ferroferric oxide nanocomposite material, in particular to a preparation method of a graphene-based triiron tetroxide composite material, and belongs to the technical field of novel carbon-based nanocomposite materials. Background technique [0002] The A.K.Geim research group of the University of Manchester in the United Kingdom prepared graphene (graphene) material for the first time by mechanical exfoliation method; graphene is a two-dimensional crystal composed of carbon atoms, and has a hexagonal honeycomb structure. Graphene has excellent physical properties, such as high mechanical strength (>l060GPa), thermal conductivity (3000 W m -1 K), electron mobility (15000cm 2 ·V -1 ·S -1 ), and specific surface (2600m 2 g), is expected to be applied in the fields of nanoelectronics, energy, environment, biomedicine and so on. [0003] How to effectively functionalize graphene, endow it with new propertie...

AI Technical Summary

Problems solved by technology

[0003] How to effectively functionalize graphene, endow it with new properties and functions, and expand its application field is a hot spot in the study of graphene materials. In recent years, graphene oxide and metal nanoparticles (gold, platinum, etc.), magnetic The preparation of composite materials of nanoparticles (nickel oxide, cobalt oxide, ferroferric oxide, etc.) and its application research in the fields of materials, chemistry, and biomedicine have developed rapidly. Magnetically functionalized graphene composite materials have optical limiting properties , Magnetic-mediated targeted drug loading, magnetic resonance imaging and other applications have attracted much attention; magnetic nanoparticles / graphene oxide composites are mostly prepared by in situ reduction of iron acetylacetonate, Chen Yongsheng's research group through chemical precipitation method The magnetic nanoparticle graphene oxide composite material was prepared; Yu Shuhong's research group prepared magnetic nanoparticles by pyrolyzing acetylacetonate iron in a polystyrene sulfonate (Pss)-wrapped graphene oxide (GO) solution. Graphene composite material, which makes the surface of the composite material connected with different contents of magnetic nanoparticles, and studied its use as a magnetic resonance imaging contrast agent, etc. Recently, Chan et al. synthesized magnetic nanoparticles / graphite oxide by chemical cross-linking Graphene composite materials, and preliminary research on its application in the removal of pollutants in sewage; most of the above work has some defects, such as the uneven particle size distribution of magnetic nanoparticles in the composite material, the saturation magnetization of the composite material is low, in the graphite The loading rate on ene cannot be effectively controlled, etc., which limit the wide application of magnetic nanoparticle graphene oxide composites in different fields. Therefore, the search for low-cost, environmentally friendly graphene-based ferric oxide nanocomposites The preparation method is still a hot spot in the current research, and there is no report on the preparation of graphene-based Fe3O4 nanocomposites by low-temperature hydrolysis.

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