Preparation method of one-dimensional nano magnetons with stable solution dispersity

Abstract

The invention belongs to the technical field of magnetic stirring, and relates to a preparation method of one-dimensional nano magnetons with stable solution dispersity. The preparation method comprises the following steps: preparing a water-soluble carbon nanotube carrier by adopting a concentrated acid oxidation method or water-soluble macromolecule coating method; immobilizing Fe3O4 nanoparticles on the surfaces of water-soluble one-dimensional carbon nanotubes which can be stably dispersed in water in an electrostatic adsorption-in-situ reduction growth manner, so that the prepared one-dimensional nano magnetons possess stable dispersity in water, magnetic stirring can be achieved in a micro-nano scale and a confinement micro-space, and the magnetism of the one-dimensional nano magnetons is controlled by controlling the size and distribution density of Fe3O4 nano particles on the surfaces of the water-soluble carbon nanotubes.

Description

Technical field: [0001] The invention belongs to the technical field of magnetic stirring, and relates to a method for preparing a one-dimensional nano-magnet with stable solution dispersion, and prepares a one-dimensional nano-magnet capable of realizing magnetic stirring at a micro-nano scale and in a confined micro-space. Background technique: [0002] Magnetic stirring is to use the same-sex repulsion and opposite-sex attraction principle of the magnetic field, and use the magnetic field to push the magnetic particles placed in the container to move, so as to achieve the purpose of stirring. Magnetic stirring can realize the non-mechanical contact power transmission between the driving device and the stirring device, and has important application value in closed systems (such as high-pressure containers). In addition, the non-mechanical contact power transmission of magnetic stirring can realize the multi-magnon collaborative stirring function, especially when the magnet...

AI Technical Summary

Problems solved by technology

The preparation of nano-magnons that can be stably dispersed in aqueous solution is the key to magnetic stirring at the micro-nano scale and in the confined micro-space. However, related research has rarely been reported. , researchers have conducted many research reports on the preparation of magnetic nanoparticles: Chinese patent 201610476814.1 discloses a preparation method and application of a nano-magnetic polylysine / (graphene oxide-carbon nanotube) biosorption material, using chemical Fe 3 o 4 Magnetic particles are deposited on the surface of graphene and carbon nanotube complexes, and lysine is modified onto magnetic hybrids by surface grafting technology to prepare magnetic bioadsorption materials; Chinese patent 200510041150.8 discloses a nano-magnetic liquid Preparation method, using co-precipitation method to prepare Fe 3 o 4 particles, and then pass the Fe 3 o 4 The particles were peptized under acidic conditions to obtain Fe 3 o 4 Transparent colloidal solution; Chinese patent 200910197295.5 discloses the preparation method of amino-functionalized water-soluble iron ferric oxide nano-magnetic particles, and prepares water-soluble amino-functionalized Fe through iron-based coordination reaction-high temperature pyrolysis-deamination protection reaction 3 o 4 Nanoparticles; Chinese patent 200810227202.4 discloses a preparation method of nano-magnetic polymer composite microspheres and Chinese patent 201019114005.6 discloses a preparation method of nano-magnetic polymer composite microspheres, both of which add hydrophobic treatment during emulsion polymerization Fe 3 o 4 Preparation of nano-polymer magnetic microspheres from particles; Chinese patent 201310576592.7 discloses a preparation method of polyaniline derivative-coated nano-magnetic particle magnetic liquid, and prepares polyaniline derivative-coated magnetic nano-Fe by distribution interpenetration reaction 3 o 4 Particle magnetic liquid; Chinese patent 201410152393.8 discloses a method for preparing a water-soluble iron ferric oxide nano-magnetic fluid. Ferric salt, urea, and tartaric acid polyol-water solution are sealed and refluxed at 100-200°C to prepare a diameter 3-5 nm Fe 3 o 4 Nanofluid; Chinese patent 201811050455.9 discloses a method for preparing nano-magnetic particles for sewage treatment, in which Fe 3 o 4 Nanomagnets are treated with alkali solution, then treated with tetramethylsiloxane and coupled with PEG polymerization to prepare magnetic nanoparticles with PEG; Chinese patent 201910025790.1 discloses the preparation of a high-stability water-based nano-magnetic fluid method, under the dispersion of macromolecular surfactants, Fe with good water solubility was prepared by co-precipitation 3 o 4 Magnetic nanoparticles; although the above-mentioned reports have provided the method for preparing magnetic nanoparticles, but by the Fe 3 o 4 It is obtained by modification and modification of magnetic particles. After enrichment and purification under magnetic field conditions, its dispersion stability under the action of magnetic field is low, and it is difficult to meet the magnetic stirring at the micro-nano scale and in the confined space.

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