Method for producing nanometer structure cobalt tetroxide sub-micron hollow balls

A sub-nanostructure technology of cobalt tetroxide, which is applied in the direction of cobalt oxide/cobalt hydroxide, etc., can solve the problems of no hollow spheres of cobalt tetroxide, etc., and achieve the effects of uniform size, simple synthesis equipment, and shortened process flow

Active Publication Date: 2013-06-12
NANCHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Xi Wang et al [Cobalt(II,III) oxide hollow structures: fabrication, properties and applications, J. Mater. Chem. 2012, 22, 23310] comprehensively reviewed the various preparation methods, properties and applications of cobalt tetroxide with hollow structure, including hollow spheres, but there was no report on the preparation of cobalt tetroxide hollow spheres by spray method in this review document

Method used

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  • Method for producing nanometer structure cobalt tetroxide sub-micron hollow balls
  • Method for producing nanometer structure cobalt tetroxide sub-micron hollow balls
  • Method for producing nanometer structure cobalt tetroxide sub-micron hollow balls

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Embodiment 1

[0024] Weigh 1.748 g cobalt nitrate hydrate [Co(NO 3 ) 2 ·6H 2 O] and 0.5 g glycine, put in a beaker, add appropriate amount of distilled water, ultrasonically dissolve, mix evenly, add distilled water to make the volume to 100 ml, obtain a mixed solution with a cobalt ion concentration of 0.06 mol / L, put it into an ultrasonic atomization device In the experiment, the air flow rate was set at 0.5 L / min, and the atomization device with piezoelectric ceramic sheet frequency at 2.4 MHz was turned on, and the atomized droplets generated were loaded into the tube furnace with a temperature of 800 °C by the air (the temperature of the tube furnace was In a quartz tube with an inner diameter of 16 mm and an outer diameter of 20 mm), heating triggers a combustion reaction, and the resulting solid product is collected by a bag collection device to obtain the final product.

Embodiment 2

[0026] Weigh 1.748 g cobalt nitrate hydrate [Co(NO 3 ) 2 ·6H 2 O] and 0.45 g glycine were placed in a beaker, an appropriate amount of distilled water was added, ultrasonically dissolved, mixed evenly, and distilled water was added to make the volume to 100 ml to obtain a mixed solution with a cobalt ion concentration of 0.06 mol / L, which was put into an ultrasonic atomization device In the experiment, the air flow rate was set at 0.6 L / min, and the atomization device with piezoelectric ceramic sheet frequency at 2.4 MHz was turned on, and the atomized droplets generated were loaded into the tube furnace with a temperature of 800 °C by the air (the In a quartz tube with an inner diameter of 16 mm and an outer diameter of 20 mm), heating triggers a combustion reaction, and the resulting solid product is collected by a bag collection device to obtain the final product.

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Abstract

The invention relates to a method for producing nanometer structure cobalt tetroxide sub-micron hollow balls. The method mainly comprises the steps of (1) weighing an appropriate amount of cobalt materials according to the amount of the produced target product, formulating into a cobalt nitrate solution with the concentration of 0.02-0.10 mol / L; (2) adding an appropriate amount of glycin into the solution obtained in the step (1), ultrasonically dissolving, mixing uniformly; (3) putting the mixed solution obtained in the step (2) into an ultrasonic atomization device for atomization, carrying the produced atomized liquid drops by using air of 0.3-1.0 L / minute into a tube furnace of the temperature of 700-1000 DEG C to cause the combustion reaction of the solution; and (4) collecting solid reaction products by using a collection device to obtain the nanometer cobalt tetroxide sub-micro hollow balls. With the production method of the invention, spinel type cobalt tetroxide sub-micro hollow balls with uniform size and regular shape are obtained without post heat treatment, so that the process flow is greatly shortened, and the synthesis equipment is simple.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a preparation method of nanostructure oxide hollow spheres. technical background [0002] Due to the unique morphology and structure, oxide hollow spheres exhibit novel properties and potential applications in many aspects such as light, electricity, magnetism, and catalysis. As an important semiconductor material, spinel nanostructured cobalt tetraoxide hollow spheres are expected to be widely used in many fields such as magnetic materials, lithium-ion battery materials, supercapacitor materials, catalytic materials, and sensor materials. The synthesis of spheres has always been a hot spot for researchers. [0003] At present, the preparation methods of cobalt trioxide hollow spheres can be mainly divided into hard template method, soft template method and template-free method. Xi Wang et al [Cobalt(II,III) oxide hollow structures: fabrication, properties and applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04
Inventor 陈伟凡林玉翠刘越刘铭吴骏飞
Owner NANCHANG UNIV
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