Method for preparing MOF (metal organic frameworks)-based magnetic nitrogen-doped carbon nano-tubes and application thereof

Abstract

The invention discloses an MOF (metal organic frameworks)-based magnetic nitrogen-doped carbon nano-tube material, a method for preparing the same and application of the MOF-based magnetic nitrogen-doped carbon nano-tube material. The MOF-based magnetic nitrogen-doped carbon nano-tube material can be used as an adsorption material. MOF are calcined at the high temperatures to obtain the MOF-basedmagnetic nitrogen-doped carbon nano-tube material. Carbon nano-tubes with large quantities of free N elements are generated on the surfaces of the MOF-based magnetic nitrogen-doped carbon nano-tube material while the appearance of the MOF is reserved. The MOF-based magnetic nitrogen-doped carbon nano-tube material, the method and the application have the advantages that the MOF are used as templates for the MOF-based magnetic nitrogen-doped carbon nano-tube material which is a magnetic carbon material prepared by the aid of the method, and are directly calcined at the high temperatures to obtain the magnetic carbon material; the carbon material is high in environmental stability as compared with MOF adsorption materials, and pi-pi conjugation can be formed by the carbon material and targetobjects by the aid of strong conjugation surfaces of the carbon nano-tubes; the MOF-based magnetic nitrogen-doped carbon nano-tube material is extremely high in magnetism as compared with commercialcarbon nano-tubes, and target object detection procedures can be simplified by the aid of MSPE (magnetic solid-phase extraction) methods; processes for preparing the MOF-based magnetic nitrogen-dopedcarbon nano-tube material are simple, and the MOF-based magnetic nitrogen-doped carbon nano-tube material which is a magnetic nitrogen-doped carbon nano-material is high in magnetism and super-high inenvironmental stability, has large specific surface areas, can be specifically bound with the target objects and has an excellent application prospect in the field of detection on the content of microcystin in lake water and the like.

Description

technical field

[0001] The invention relates to a preparation method and application of MOF-based magnetic nitrogen-doped carbon nanotubes. Background technique

[0002] Algae are the oldest organisms on the earth. They have large differences in shape and simple structure. Generally, there are more types in the ocean than in freshwater. Algae have a variety of nutrition and reproduction methods. They can grow rapidly under suitable conditions, and gather on the water surface under the action of their own buoyancy and hydrological factors, forming algae liquid visible to the naked eye, that is, "red tide" (Red Tide) tide) or "Water-bloom". "Red tides" or "water blooms" are mostly toxin-producing algae, and their occurrence causes great harm to the environment and aquaculture industry, and is regarded as a worldwide public nuisance. Chemical analysis is a common method for the detection of algal toxins and has high sensitivity. It includes high-performance liquid chromatogr...

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