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Mesoporous composite material Fe3O4-Co3O4 and preparation method thereof, and application in degradation of gaseous pollutants

A fe3o4-co3o4, composite material technology, applied in metal/metal oxide/metal hydroxide catalysts, separation methods, chemical instruments and methods, etc., can solve the problems of high cost, secondary air pollution, slow effect, etc. Achieve the effect of easy recovery, avoid pollution, and easy reaction conditions

Active Publication Date: 2020-06-26
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures are costly, inconvenient to use, limited by conditions, and slow to take effect. Some products may even cause secondary pollution to the air. Therefore, finding a method that can efficiently, conveniently and safely degrade gaseous pollutants has become the focus of attention.

Method used

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  • Mesoporous composite material Fe3O4-Co3O4 and preparation method thereof, and application in degradation of gaseous pollutants
  • Mesoporous composite material Fe3O4-Co3O4 and preparation method thereof, and application in degradation of gaseous pollutants
  • Mesoporous composite material Fe3O4-Co3O4 and preparation method thereof, and application in degradation of gaseous pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Mesoporous composite material Fe 3 o 4 -Co 3 o 4 preparation of

[0025] 1) 2.57g of cobalt nitrate hexahydrate and 2.02g of iron nitrate nonahydrate were respectively dissolved in 50mL of aqueous solution to obtain iron-containing solution and cobalt-containing solution respectively.

[0026] 2) Mix the iron-containing solution and the cobalt-containing solution obtained in step 1) evenly, adjust the concentration of the F127 aqueous solution to 0.06g / mL, pour 15mL of the F127 aqueous solution, and place the obtained sample in a dry box after fully stirring. Dry at 100°C for 10h.

[0027] 3) The dried sample was calcined in a muffle furnace under air conditions at a heating rate of 5°C / min and 400°C for 6h, and the calcined sample was cooled to room temperature and ground to obtain the mesoporous composite material Fe 3 o 4 -Co 3 o 4 .

[0028] (2) Detection

[0029] figure 1 for Co 3 o 4 , Fe 3 o 4 and the mesoporous composite Fe prepared in Example...

Embodiment 2

[0031]Example 2 mesoporous composite material Fe 3 o 4 -Co 3 o 4 Application as a catalyst in the degradation of gaseous isopropanol

[0032] Method: get 0.1 gram of the mesoporous composite material Fe prepared in Example 1 3 o 4 -Co 3 o 4 Put it into a heatable experimental device, and inject 5 μL of liquid isopropanol into the experimental device. After the isopropanol is fully vaporized, detect the gas concentration of isopropanol in the experimental device.

[0033] Comparative test: Inject 5 μL of liquid isopropanol directly into the heatable experimental device, and detect the gas concentration of isopropanol in the experimental device after the isopropanol is fully vaporized.

[0034] With the increase of temperature, the degradation rate of isopropanol gas in the experimental device was determined. Depend on image 3 As shown, the mesoporous composite Fe 3 o 4 -Co 3 o 4 The degradation rate to isopropanol increases gradually. When the temperature is 250°C...

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Abstract

The invention discloses a mesoporous composite material Fe3O4-Co3O4 and a preparation method thereof, and application of the mesoporous composite material Fe3O4-Co3O4 in degradation of gaseous pollutants. The preparation method comprises the following steps: respectively dissolving an iron salt and a cobalt salt in an aqueous solution to obtain an iron-containing solution and a cobalt-containing solution; mixing the iron-containing solution and the cobalt-containing solution, fully stirring, adding an aqueous solution containing F127, and drying the final mixed solution; and calcining the dried product under an inert gas or air condition, cooling to room temperature, and grinding to obtain the mesoporous composite material Fe3O4-Co3O4. The mesoporous composite material Fe3O4-Co3O4 disclosed by the invention has the capability of adsorbing and degrading pollutants, so that gaseous pollutants such as isopropanol and the like can be effectively and conveniently degraded, and the purpose of purifying air is achieved.

Description

technical field [0001] The invention belongs to the technical field of pollutant degradation of mesoporous composite materials, in particular to a mesoporous composite material Fe 3 o 4 -Co 3 o 4 Its preparation method and application in degrading gaseous pollutants. Background technique [0002] With the development of economy and the improvement of social level, people's material life has also been greatly improved, and people have begun to pay more attention to their own health. According to relevant data analysis and statistics, living in an environment with excessively high concentrations of gaseous pollutants for a long time will cause serious damage to the human body, including the human central nervous system and immune system. Taking isopropanol as an example, isopropanol is an important chemical product and raw material. Mainly used in pharmaceuticals, cosmetics, plastics, spices, paints, etc. At present, the prevention and control measures for pollutants mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J35/10B01D53/72B01D53/86
CPCB01J23/75B01D53/8668B01D53/72B01J35/60B01J35/647
Inventor 范晓星李林丽马静怡蔡鹤
Owner LIAONING UNIVERSITY
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