Renewable amino-functionalized magnetic carbon nanocomposite material and its preparation method and application

A nanocomposite material, amino functionalization technology, applied in chemical instruments and methods, alkali metal compounds, inorganic chemistry, etc., can solve the application research of renewable amino functionalized magnetic carbon nanocomposite materials, which has not been reported in the literature and is not easy to achieve. Solid-liquid separation and reuse, difficult to achieve solid-liquid separation and other problems, to achieve the effect of rapid separation and enrichment, strong magnetic, strong removal ability

Active Publication Date: 2017-12-12
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Some scholars use activated carbon, medical stone, metal oxide and other materials to adsorb acidic industrial dyes in water or oxidize and degrade acidic industrial dyes with ozone, photocatalyst, etc. The common problem of these methods is that the used materials are not easy to achieve solid-liquid separation and repeat Use, and easy to cause secondary pollution to the water environment
However, the adsorption capacity of pure magnetic materials is limited, so it is necessary to carry out appropriate modification on its surface to improve the selectivity and adsorption performance.
[0004] In view of the strong adsorption capacity of carbon nanotubes for acidic industrial dyes with aromatic structure, the preparation of a renewable amino-functionalized magnetic carbon nanocomposite material with excellent adsorption performance for acidic industrial dyes can effectively overcome the small adsorption capacity of traditional adsorbents, It is not easy to achieve solid-liquid separation and poor regeneration ability, so it has a wide range of application prospects
At present, there is no literature report on the preparation method of renewable amino-functionalized magnetic carbon nanocomposites and its application in the removal of acidic industrial dyes in water.

Method used

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  • Renewable amino-functionalized magnetic carbon nanocomposite material and its preparation method and application
  • Renewable amino-functionalized magnetic carbon nanocomposite material and its preparation method and application
  • Renewable amino-functionalized magnetic carbon nanocomposite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: One-pot preparation of renewable amino functionalized magnetic carbon nanocomposite

[0041] 5.0g FeCl 3 ·6H 2 O was added to 30mL of ethylene glycol, and ultrasonically dispersed for 0.5h until the solution was clear; then added 3.0g of anhydrous sodium acetate, then 0.6g of sodium hydroxide and 5.0mL of ethylenediamine, ultrasonically dispersed for 0.5h, and added 20mg of carbon nanotubes , Ultrasonic dispersion at 50°C for 1h, and then the mixed solution was added to the polytetrafluoroethylene autoclave and reacted at 200°C for 8h. After cooling to room temperature, magnetic separation, washing with ultrapure water 3 times to pH 7.0, washing with ethanol several times, and vacuum drying at 60°C for 6 hours, a renewable amino-functional magnetic carbon nanocomposite was prepared. The scanning electron micrograph of the prepared renewable amino-functionalized magnetic carbon nanocomposite is as follows figure 1 As shown, Fe in the renewable amino-functionalize...

Embodiment 2

[0042] Example 2: One-pot preparation of renewable amino-functionalized magnetic carbon nanocomposites

[0043] 4.8g Fe 2 (SO 4 ) 3 ·7H 2 O was added to 35mL of ethylene glycol, and ultrasonically dispersed for 0.5h until the solution was clear; then added 5.0g of anhydrous sodium acetate, then 1.0g of sodium hydroxide and 25.0mL of ethylenediamine, ultrasonically dispersed for 0.5h, and added 100mg of carbon nanotubes , Ultrasonic dispersion at 50°C for 0.5h, and then the mixed solution was added to the polytetrafluoroethylene autoclave and reacted at 200°C for 10h. After cooling to room temperature, magnetic separation, washing with ultrapure water several times to pH 7.0, washing with ethanol 4 times, and vacuum drying at 90°C for 12 hours, a renewable amino-functionalized magnetic carbon nanocomposite was prepared.

Embodiment 3

[0044] Example 3: One-pot preparation of renewable amino-functionalized magnetic carbon nanocomposites

[0045] 1.0g FeCl 3 ·6H 2 O was added to 20mL of ethylene glycol, and ultrasonically dispersed for 0.5h until the solution was clear; then added 1.0g of anhydrous sodium acetate, then 0.2g of sodium hydroxide and 15.0mL of diethylenetriamine, ultrasonically dispersed for 0.3h, and added 80mg of carbon nano Tube, ultrasonic dispersion at 50°C for 0.3h, then the mixed solution was added to the polytetrafluoroethylene autoclave and reacted at 200°C for 4h. After cooling to room temperature, magnetic separation, washing with ultrapure water several times to pH 7.0, washing with ethanol 5 times, and vacuum drying at 30°C for 10 hours, a renewable amino functionalized magnetic carbon nanocomposite was prepared.

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Abstract

The invention relates to a renewable amino-functionalized magnetic carbon nanocomposite material, which is characterized in that its preparation method comprises the following steps: (1) adding ferric iron salt into ethylene glycol and ultrasonically dispersing; (2) subsequently Add anhydrous sodium acetate, then add sodium hydroxide and amino functional reagents, ultrasonically disperse until the solution is clear; (3) add carbon nanotubes to the solution in step (2), ultrasonically disperse, and then add the mixed solution to the polytetrafluoroethylene reaction in an ethylene autoclave; (4) cool the product after step (3) to room temperature, magnetically separate it, wash it with ultrapure water until the pH is 7.0, wash it several times with ethanol, and dry it in vacuum to obtain a renewable Amino-functionalized magnetic carbon nanocomposites, the present invention also provides a method for removing acidic industrial dyes in water, which can effectively realize the recycling and reuse of resources, avoid secondary pollution to water bodies to the greatest extent, and be effective in the removal of environmental pollutants. It has broad application prospects.

Description

Technical field [0001] The invention belongs to the technical field of functional materials and analysis, and specifically relates to an amino-modified magnetic carbon nanocomposite material, a preparation method thereof, and an application in removing acidic industrial dyes from water. Background technique [0002] Industrial dyes are mainly divided into 9 categories: acid industrial dyes, ice dyes, cationic dyes, direct dyes, disperse dyes, reactive dyes, sulfur dyes, vat dyes, and solvent dyes. As a major category of industrial dyes, acid industrial dyes mainly include acid yellow, acid red, acid orange, etc., which are widely used for the coloring of industrial textiles, fur products, wood products and ceramic products. As a kind of chemical pollutants with aromatic structure, acid industrial dyes have caused widespread concern at home and abroad for their pollution to water bodies. According to my country's comprehensive sewage discharge standard GB 8978-1996, the main cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28B01J20/22B01J20/28B01J20/30
Inventor 徐益军詹萍萍
Owner NINGBO UNIV
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