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Application of porous cobaltosic oxide

A technology of cobalt tetroxide and cobalt salts, applied in cobalt oxide/cobalt hydroxide and other directions, can solve the problems that the physical and chemical properties of cobalt tetroxide are greatly affected by morphology, size and structure, which is unfavorable to large-scale production and affects application performance, etc. Achieving the effect of abundant pores, reducing preparation cost, and being beneficial to enterprise production

Active Publication Date: 2015-12-30
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The physical and chemical properties of cobalt tetroxide are greatly affected by the shape, size and structure, which in turn affects its application performance
[0006] The prior art can prepare cobalt tetroxide with various shapes, but a large amount of organic solvents are used, which is not conducive to large-scale production and environmental pollution; at the same time, the electrode material, catalysis, and adsorption of capacitors also require high cobalt tetroxide. specific surface area and rich void structure

Method used

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  • Application of porous cobaltosic oxide
  • Application of porous cobaltosic oxide
  • Application of porous cobaltosic oxide

Examples

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Effect test

Embodiment 1

[0035]At room temperature, 5 g of porous rapeseed pollen was added to 50 mL of distilled water, stirred for 30 min, and ultrasonically dispersed for 5 to 30 min. After the above mixture was centrifuged, 50 mL of absolute ethanol was added, and the above steps were repeated three times to fully remove impurities on the surface. Then, the centrifuged product was dried in an oven at 30°C. At room temperature, take 1 g of pretreated pollen and add it to 10 mL of distilled water, then add 1 mmol of cobalt acetate, stir for 10 min, then ultrasonically shake for 3 min, then add 0.5 g of ethylenediamine, and mechanically stir for 10 min to obtain a mixed solution. At room temperature, 0.2 g of PVP was added to 20 mL of 2 mol / L NaOH aqueous solution, and stirred for 6 min. The stirred solution was slowly dropped into the mixed solution, and mechanically stirred for 10 min. The above mixed solution was heated to 65°C, then slowly dropped into 20 mL of hydrazine hydrate, and stirred fo...

Embodiment 2

[0039] At room temperature, 10 g of rapeseed pollen was added into 80 mL, stirred for 40 min, and ultrasonically dispersed for 20 min. After the above mixture was centrifuged, 40 mL of absolute ethanol was added, and the above steps were repeated 4 times to fully remove impurities on the surface. Then, the centrifuged product was dried in an oven at 45°C. At room temperature, take 2 g of pretreated pollen and add it to 30 mL of distilled water, then add 1.5 mmol of cobalt chloride hydrate, stir for 65 min, then ultrasonically shake for 3 min, then add 4 g of ethylenediamine, and mechanically stir for 18 min to obtain a mixed solution. At room temperature, 0.3 g of polyethylene glycol 400 was added to 30 mL of NaOH solution with a concentration of 3 mol / L, and stirred for 7 min. The stirred solution was slowly added dropwise to the mixed solution, and mechanically stirred for 40 min. The above mixed solution was heated to 70°C, then 25 mL of hydrazine hydrate was slowly added...

Embodiment 3

[0042] At room temperature, 15 g of rapeseed pollen was added to 80 mL of distilled water, stirred for 45 min, and ultrasonically dispersed for 25 min. After the above mixture was centrifuged, 100 mL of absolute ethanol was added, and the above steps were repeated 5 times to fully remove impurities on the surface. Then, the centrifuged product was dried in an oven at 60°C. At room temperature, 10 g of pretreated pollen was added to 65 mL of distilled water, then 2 mmol of cobalt sulfate hydrate was added, stirred for 25 min, then ultrasonically oscillated for 5 min, then 4 g of ethylenediamine was added, and mechanically stirred for 15 min to obtain a mixed solution. At room temperature, 0.5 g of PVP was added to 40 mL of NaOH solution with a concentration of 3 mol / L, and stirred for 7 min. The stirred solution was slowly dropped into the mixed solution, and mechanically stirred for 15 min. The above mixed solution was heated to 75°C, and then 35 mL of hydrazine hydrate was ...

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Abstract

The invention discloses an application of porous cobaltosic oxide. The porous cobaltosic oxide is in a porous hollow elliptic shape, relatively high in specific surface area, rich in pores, adjustable in pore size, capable of being used as a high-performance super capacitor electrode material, an automobile tail gas treatment material and an adsorption material.

Description

technical field [0001] The invention discloses an application of porous tricobalt tetroxide and belongs to the technical field of inorganic salt porous material application. Background technique [0002] With the development of social economy, people pay more and more attention to the ecological environment and green energy. Pollutants such as carbon monoxide and hydrocarbons in automobile exhaust can cause photochemical smog. Therefore, the direct discharge of automobile exhaust into the air is very harmful to the environment and seriously affects people's life safety. [0003] Cobalt tetroxide has a spinel crystal structure. It is an important magnetic material and a P-type transition metal oxide. It exhibits unique physical and chemical properties in the fields of electricity, magnetism, gas sensing, and catalysis. It is widely used in lithium ion Important fields such as battery electrode materials, magnetic materials, heterogeneous catalysts, and automobile exhaust ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04
CPCC01G51/04C01P2002/85C01P2004/03
Inventor 周兴宋冠宇
Owner SUZHOU UNIV OF SCI & TECH
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