Preparation method of core-shell structured micro-nanosphere comprising magnetic core and magnesium silicate nano-sheet shell
A technology of micro-nanosphere and core-shell structure, which is applied in the direction of microsphere preparation, nanotechnology, microcapsule preparation, etc., can solve the problems of difficult separation, easy agglomeration, small adsorption capacity, etc., and achieve large morphology and good removal effect , The effect of the novel preparation method
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[0014] Preparation of a core-shell structure micro-nanosphere composed of a magnetic core and a magnesium silicate nanosheet and shell layer:
[0015] (1) Preparation of monodisperse ferroferric oxide nanospheres: 5mmol of ferric chloride hexahydrate and 3.6g of sodium acetate were added to 40ml of ethylene glycol solution, magnetically stirred for 2h to form a well-mixed solution, and then 1.0g of poly Ethylene, magnetically stirred for 30 minutes, and then put the above mixed solution into a polyvinyl fluoride autoclave with a volume of 70 ml; put the polyvinyl fluoride autoclave into a blast drying box and heat it to 200°C and keep it for 8 hours; After the tetrafluoroethylene autoclave is naturally cooled, the reaction product is taken out, washed repeatedly with deionized water and absolute ethanol, and finally the product is placed in a vacuum drying oven at 65-75°C for 5-8 hours, and the final product is very dispersible. Good Fe3O4 nanospheres.
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