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Preparation of Co3O4 nanotube array

A nanotube array and thermal decomposition technology, applied in the field of nanotubes, can solve the problems of long reaction period, reduced purity, complicated process, etc., and achieve the effects of low cost, low impurity content and high purity

Inactive Publication Date: 2009-07-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation methods published in these documents all have the disadvantages of complex process, long reaction cycle, low efficiency, reduced purity or high cost, which limit their application.

Method used

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  • Preparation of Co3O4 nanotube array
  • Preparation of Co3O4 nanotube array
  • Preparation of Co3O4 nanotube array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The iron substrate was cleaned and dried with corrosive solution and acetone, placed on a heating platform and heated at 300°C for 5 minutes. Then spread 0.1 mol cobalt nitrate powder on the substrate and react for 5 hours. The black matter generated by the reaction was washed and filtered, washed several times with deionized water and ethanol, and then dried in an oven at 80° C. for 12 hours. The morphology of the obtained product is as figure 1 and figure 2 Shown is an array of nanotubes. The specific surface area is 41.72m 2 / g.

Embodiment 2

[0029] Using the process in Example 1, when the reaction time is 2 minutes, nanotube arrays can also be obtained.

Embodiment 3

[0031] Using the process in Example 1, when the reaction time is 1 hour, nanotube arrays can also be obtained.

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Abstract

The invention discloses a preparation method of a Co3O4 nanotube array; particularly, the preparation method comprises the steps: a precursor is laid flat on a heated basal plate for thermal decomposition reaction lasing for 2 minutes to 5 minutes with the temperature of 250 DEG C to 450 DEG C; and then a black material generated by the thermal decomposition reaction is washed, filtered and dried to obtain the Co3O4 nanotube array. The preparation method has the advantages of simple operations, low requirement on equipment, novel preparation processes, unique formation mechanism, easy application and generalization in industry, no adding of die and plate surfactant or structure directing agent in the reaction course, short period, low cost, high efficiency and being capable of being further integrated. The nanotube array synthesized by the preparation method has high purity, low impurity content, large specific surface area, wide application range including the use as an excellent material for lithium electrode, meets the requirements of electron-level powder materials, is capable of significantly improving the performance of cells and has obvious economic and social benefits.

Description

technical field [0001] The present invention relates to nanotubes, in particular to a thermal decomposition of cobalt nitrates utilizing low melting point and low decomposition temperature to generate Co 3 o 4 An easy way to array nanotubes. Background technique [0002] In recent years, one-dimensional nanostructures (e.g., nanotubes, nanorods, and nanoribbons) and their arrays have attracted extensive attention for their potential applications in fundamental research and electronics, optics, catalysis, and data storage. And the nano-Co with spinel structure 3 o 4 Due to its unique optical, semiconductor properties and thermal stability, it is widely used in various fields such as catalysis, sensing, solar energy absorption, lithium-ion batteries, and electrochemical and electronic materials. The physical and chemical properties of nanomaterials are strongly dependent on their structure, size and shape. To this end, many processes have been used to modulate the Co 3 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04
Inventor 官建国童国秀刘韩星
Owner WUHAN UNIV OF TECH
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