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Carbon nanotube immobilized quaternary ammonium salt magnetic functional material and its preparation method and application

A technology of nano-magnetic materials and immobilized quaternary ammonium salts, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., to achieve perchlorate concentration optimization, strong removal capacity, and save treatment time and cost effects

Inactive Publication Date: 2020-09-04
NINGBO MUNICIPAL CENT FOR DISEASE CONTROL & PREVENTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the strong adsorption capacity of carbon nanotubes for perchlorate and the high selectivity of quaternary ammonium salt functional groups for perchlorate, a functional material combining carbon nanotubes and quaternary ammonium salts was developed to adsorb The perchlorate has a wide range of application prospects, but this type of material has not yet appeared in the prior art

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  • Carbon nanotube immobilized quaternary ammonium salt magnetic functional material and its preparation method and application
  • Carbon nanotube immobilized quaternary ammonium salt magnetic functional material and its preparation method and application
  • Carbon nanotube immobilized quaternary ammonium salt magnetic functional material and its preparation method and application

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Embodiment 1

[0025] A preparation method of a carbon nanotube immobilized quaternary ammonium salt magnetic functional material, comprising the steps of:

[0026] (1) Preparation of carbon nanotubes immobilized amino magnetic functional material by solvothermal method, 2.0g FeCl 3 ·6H 2 O was added to 20 mL of ethylene glycol, ultrasonically dispersed until the solution was clear; then 3.0 g of anhydrous sodium acetate was added, followed by 0.5 mL of 10% (V / V) ammonia solution, 20 mL of diethylenetriamine and 50 mg of carboxylated Carbon nanotubes were ultrasonically dispersed for 10 min, and then the above mixed solution was added into a polytetrafluoroethylene autoclave and reacted at 200° C. for 10 h. Cool to room temperature, magnetically separate, wash with ultrapure water several times until the pH is 7.0, then wash with ethanol several times, and vacuum-dry at 60°C for 6 hours to prepare the carbon nanotube-immobilized amino magnetic functional material.

[0027] (2) Prepare carb...

Embodiment 2

[0031] A preparation method of a carbon nanotube immobilized quaternary ammonium salt magnetic functional material, comprising the steps of:

[0032] (1) Preparation of carbon nanotubes immobilized amino magnetic functional material by solvothermal method, 2.0g FeCl 3 ·6H 2 O was added to 20 mL of ethylene glycol, ultrasonically dispersed until the solution was clear; then 3.0 g of anhydrous sodium acetate was added, followed by 2.0 mL of 25% (V / V) ammonia solution, 10 mL of diethylenetriamine and 100 mg of carboxylated carbon The nanotubes were ultrasonically dispersed for 8 minutes, and then the mixed solution was added into a polytetrafluoroethylene autoclave and reacted at 200°C for 12 hours. Cool to room temperature, magnetically separate, wash with ultrapure water several times until the pH is 7.0, then wash with ethanol several times, and vacuum-dry at 30°C for 12 hours to prepare the carbon nanotube-immobilized amino magnetic functional material.

[0033] (2) Prepare...

Embodiment 3

[0036] A preparation method of a carbon nanotube immobilized quaternary ammonium salt magnetic functional material, comprising the steps of:

[0037] (1) Preparation of carbon nanotubes immobilized amino magnetic functional material by solvothermal method, 2.0g FeCl 3 ·6H 2 O was added to 20 mL of ethylene glycol, ultrasonically dispersed until the solution was clear; then 3.0 g of anhydrous sodium acetate was added, followed by 5 mL of 10% (V / V) ammonia solution, 5 mL of diethylenetriamine and 20 mg of carboxylated carbon The nanotubes were ultrasonically dispersed for 5 minutes, and then the above mixed solution was added into a polytetrafluoroethylene autoclave and reacted at 200° C. for 5 hours. Cool to room temperature, magnetically separate, wash with ultrapure water several times until the pH is 7.0, then wash with ethanol several times, and vacuum-dry at 90°C for 8 hours to prepare the carbon nanotube-immobilized amino magnetic functional material.

[0038] (2) Prepa...

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Abstract

The invention relates to a CNT (carbon nano tube) supported quaternary ammonium salt magnetic functional material as well as a preparation method and application thereof. The magnetic functional material is characterized by comprising a carboxylic CNT, a nanoscaled magnetic material coating the surface of the carboxylic CNT, an amination reagent supported on the surface of the carboxylic CNT and aquaternary ammonium salt functional reagent grafted on the amination reagent. Compared with the prior art, the magnetic functional material has the advantages that the prepared magnetic functional material can be used for removing perchlorate in water, is comparatively strong in magnetism and has comparatively high adsorption capacity and comparatively high adsorptive selectivity; and in addition, the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of functional materials for water pollution prevention and control, in particular to a carbon nanotube immobilized quaternary ammonium salt magnetic functional material and its preparation method and application Background technique [0002] Perchlorate, as a highly diffusible persistent emerging pollutant, can compete with iodide ions to enter the thyroid gland after ingestion, and induce thyroid cancer. Therefore, perchlorate is also called "powerful thyrotoxin". In the production process of solid propellants such as fireworks and explosives, ammonium perchlorate is used in large quantities as an oxidant, and a small amount of ammonium perchlorate can migrate to surface water and groundwater through medium water infiltration. widespread attention. Since 1997, USEPA has detected perchlorate in groundwater, surface water and drinking water of 42 states including California. Therefore, the research on the control of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F101/12
CPCB01J20/205B01J20/28009C02F1/283C02F2101/12
Inventor 赵永纲金米聪陈晓红
Owner NINGBO MUNICIPAL CENT FOR DISEASE CONTROL & PREVENTION
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