Zinc ferrite hollow sphere with micro-nano structure and preparation method thereof

Abstract

The invention discloses a zinc ferrite hollow sphere with a micro-nano structure and a preparation method of the zinc ferrite hollow sphere, wherein the hollow sphere is a micro-sphere with the diameter of 1.5-3 microns and comprises zinc ferrite hollow spheres, the sphere diameter of the zinc ferrite hollow spheres is 180-220 nm, the sphere wall thickness of the zinc ferrite hollow spheres is 28-32 nm, and the sphere wall is composed of zinc ferrite nano-particles; the method comprises the following steps: respectively preparing a urea aqueous solution, a trisodium citrate dihydrate aqueous solution, a ferric chloride hexahydrate aqueous solution and a zinc nitrate aqueous solution; uniformly mixing the urea aqueous solution and the trisodium citrate dihydrate aqueous solution; and sequentially adding the ferric chloride hexahydrate aqueous solution and the zinc nitrate aqueous solution into the obtained mixed solution, uniformly mixing, carrying out closed reaction on the obtained precursor solution at 120-180 DEG C, and sequentially carrying out solid-liquid separation, washing and drying treatment on the obtained reaction solution to obtain the target product. The material is uniform in size and large in specific surface area, and can be easily and widely commercially applied to the fields of photoconductive materials, water treatment, surface enhanced Raman scattering, sensors and the like.

Description

technical field [0001] The invention relates to a zinc ferrite hollow sphere and a preparation method thereof, in particular to a zinc ferrite hollow sphere with a micronano structure and a preparation method thereof. Background technique [0002] Zinc ferrite (ZnFe 2 o 4 ) is a spinel-type compound with ferric oxide as the main component. It has good catalytic activity, electrochemical performance and soft magnetic properties. It has been widely used in the fields of photoconductive materials, water treatment and sensors. application. At present, in order to obtain zinc ferrite with higher catalytic activity, some beneficial attempts and efforts have been made, such as the title "Catalytic Activity of Ferrates (NiFe 2 o 4 , ZnFe 2 o 4 and CoFe 2 o 4 ) on the Thermal Decomposition of Ammonium Perchlorate", Propellants Explos.Pyrotech.2019, 44, 1-10. ("Catalytic Activity of Ferrates (Nickel Ferrite, Zinc Ferrite and Cobalt Ferrite) on Thermal Decomposition of Ammoniu...

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Problems solved by technology

Though this product has better dispersibility, all there is weak point with its preparation method, at first, the size of product is inhomogeneous, when being used as catalyst, activity is difficult to control; Secondly, the specific surface area of ​​product is too small, The scope of application is restricted; again, the preparation method not only uses more types of raw materials, but also needs organic solvents, and also needs a long heating time, and it is impossible to obtain products with uniform size and large specific surface area.

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