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Heavy metal ion adsorption film and preparation method thereof

A technology of heavy metal ions and adsorption membranes, which is applied in the fields of alkali metal compounds, chemical instruments and methods, adsorption water/sewage treatment, etc., and can solve the problems of expensive polytetrafluoroethylene emulsions, poor performance stability, and poor compatibility. Good and other problems, to achieve the effect of improving the adsorption effect, improving mechanical properties and performance stability, and good adsorption effect

Inactive Publication Date: 2020-12-22
王佩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor compatibility between porous carbon, conductive carbon and polytetrafluoroethylene, the long-term performance stability of this adsorption membrane material is not good, and the price of polytetrafluoroethylene emulsion is relatively expensive, making this membrane The application of the material is limited

Method used

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  • Heavy metal ion adsorption film and preparation method thereof

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Effect test

Embodiment 1

[0030] Embodiment 1 provides a kind of preparation method of heavy metal ion adsorption membrane, is characterized in that, comprises the steps:

[0031] Step S1, preparation of 3-fluorocintosilicic acid-modified diaminocalixarene derivatives: add 3-fluorocintosilicic acid and diaminocalixarene derivatives to an organic solvent and mix well, then add 2-ethanediol to it Oxy-1-ethoxycarbonyl-1,2-dihydroquinoline, at 45°C, stirred and reacted for 6 hours under an inert gas atmosphere, and then the solvent and by-products were removed by rotary evaporation to obtain modified 3-fluorosilicic acid Sexual diaminocalixarene derivatives;

[0032] Step S2, preparation of vinyl β-cyclodextrin quaternary ammonium salt based on carboxyl metal organic framework: adding vinyl β-cyclodextrin quaternary ammonium salt and carboxyl metal organic framework to hexafluoroisopropanol, Stir the reaction at 30°C for 3 hours, and then remove the hexafluoroisopropanol by rotary evaporation to obtain a ...

Embodiment 2

[0040] Embodiment 2 provides a kind of preparation method of heavy metal ion adsorption membrane, is characterized in that, comprises the steps:

[0041] Step S1, preparation of 3-fluorocintosilicic acid-modified diaminocalixarene derivatives: add 3-fluorocintosilicic acid and diaminocalixarene derivatives to an organic solvent and mix well, then add 2-ethanediol to it Oxygen-1-ethoxycarbonyl-1,2-dihydroquinoline, at 47°C, stirred and reacted for 7 hours under an inert gas atmosphere, and then the solvent and by-products were removed by rotary evaporation to obtain modified 3-fluorosilicic acid Sexual diaminocalixarene derivatives;

[0042] Step S2, preparation of vinyl β-cyclodextrin quaternary ammonium salt based on carboxyl metal organic framework: adding vinyl β-cyclodextrin quaternary ammonium salt and carboxyl metal organic framework to hexafluoroisopropanol, The reaction was stirred at 35°C for 3.5 hours, and then the hexafluoroisopropanol was removed by rotary evapora...

Embodiment 3

[0050] Embodiment 3 provides a kind of preparation method of heavy metal ion adsorption membrane, is characterized in that, comprises the steps:

[0051] Step S1, preparation of 3-fluorocintosilicic acid-modified diaminocalixarene derivatives: add 3-fluorocintosilicic acid and diaminocalixarene derivatives to an organic solvent and mix well, then add 2-ethanediol to it Oxy-1-ethoxycarbonyl-1,2-dihydroquinoline, stirred and reacted for 7.5 hours under an inert gas atmosphere at 50°C, and then the solvent and by-products were removed by rotary evaporation to obtain modified 3-fluorosilicic acid Sexual diaminocalixarene derivatives;

[0052] Step S2, preparation of vinyl β-cyclodextrin quaternary ammonium salt based on carboxyl metal organic framework: adding vinyl β-cyclodextrin quaternary ammonium salt and carboxyl metal organic framework to hexafluoroisopropanol, The reaction was stirred at 40°C for 4 hours, and then the hexafluoroisopropanol was removed by rotary evaporation...

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Abstract

The invention discloses a preparation method of a heavy metal ion adsorption film. The preparation method is characterized by comprising the following steps: S1, preparing a 3-fluorocinnamic acid modified diaminocalixarene derivative; step S2, preparation of vinyl beta-cyclodextrin quaternary ammonium salt based on a carboxyl-containing metal organic framework; and S3, forming of the heavy metal ion adsorption film. The invention also provides the heavy metal ion adsorption film prepared by using the preparation method of the heavy metal ion adsorption film. The heavy metal ion adsorption filmprovided by the invention is good in heavy metal ion adsorption effect, excellent in mechanical property, corrosion resistance and pollution resistance, good in performance stability, long in servicelife and convenient to recycle and separate.

Description

technical field [0001] The invention relates to the technical field of functional membrane materials, in particular to a heavy metal ion adsorption membrane and a preparation method thereof. Background technique [0002] In recent years, with the increase of production activities in mining and metallurgy, machinery manufacturing, chemical industry, electronics, instrumentation and other industries, the discharge of heavy metal wastewater (such as cadmium, lead, copper, mercury, etc.) is also increasing. Heavy metal pollution in wastewater has become one of the most serious environmental problems. Heavy metals are common pollutants in industrial wastewater. Such substances usually exist in wastewater in the form of heavy metal ions and their compounds. They are difficult to degrade in the environment, can accumulate in animals and plants, and are gradually enriched through the food chain. After entering the human body, it will cause great damage to the kidneys, liver, brain,...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L51/02C08F251/00C08F222/02C08F212/08C08F222/38C08F2/46B01J20/26B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/264B01J20/28011B01J20/28033C02F1/285C02F2101/20C08F2/46C08F251/00C08J5/18C08J2351/02C08F222/02C08F212/08C08F222/38
Inventor 王佩
Owner 王佩
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