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Novel magnetic Fe / C@ MOF composite absorbent and preparation method thereof

A composite material and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, alkali metal compounds, etc., can solve the problems of weak magnetism and inability to magnetic separation, and achieve short carbonization time, low price, and reaction conditions. mild effect

Inactive Publication Date: 2014-10-15
GUANGXI NORMAL UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the magnetic properties of MOFs are very weak and cannot be used for fast magnetic separation.

Method used

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  • Novel magnetic Fe / C@ MOF composite absorbent and preparation method thereof
  • Novel magnetic Fe / C@ MOF composite absorbent and preparation method thereof
  • Novel magnetic Fe / C@ MOF composite absorbent and preparation method thereof

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Embodiment 1

[0026] A preparation method of a novel magnetic Fe / CMOF composite adsorbent, the specific steps are as follows:

[0027] (1) Synthesis of magnetic Fe / C materials

[0028] Weigh 5.0 g starch and FeCl respectively 3 ·6H 2 Put 4.0 g of O in an Erlenmeyer flask, add 40 mL of water, and place it in a constant temperature magnetic stirrer at 50 ℃ in a constant temperature water bath with magnetic stirring overnight. After completion, it was placed in a household microwave oven and heated at 600 W for 50 s to obtain a bright red gel. The obtained gel was dried in a forced-air drying oven at 80 ℃ for 10 h, and then dried in a vacuum drying oven at 80 ℃ overnight to obtain a light yellow solid. Weigh the obtained light yellow solid and 10.0 g of anhydrous zinc chloride in a ratio of 1:4, quickly grind it evenly in a mortar and transfer to a beaker, place it in a household microwave oven and heat it with 600 W microwave for 3 min. After cooling, obtain a black solid with water Repeated was...

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Abstract

The invention provides a novel magnetic porous metal-organic skeleton (Fe / C@ MOF) composite absorbent and a preparation method thereof. Biomaterials which are extensive in source and low in price are served as the carbon source; the Fe<3+> ions are served as the precursor of the magnetic material; under the microwave-assisted condition, magnetic Fe / C material is quickly synthesized; then, the method of self-assembly layer by layer is adopted, so as to alternately deposit metal central ions and organic ligands on the surface of the magnetic Fe / C material and achieve the in-situ synthesis of the MOF; the magnetic Fe / C@ MOF composite is prepared. The preparation method provided by the invention is simple in the preparation technology; moreover, the prepared magnetic Fe / C@MOF composite has the advantages of large specific surface area, high adsorption capacity, capability of magnetic separation, reutilization and the like. The prepared composite simultaneously has the capability of adsorbing and removing organic dye and heavy metal ions. Therefore, the prepared composite has favorable application prospects in the fields of environmental remediation, wastewater treatment, separation science and the like.

Description

technical field [0001] The invention belongs to the technical field of new functional materials for environmental restoration, and in particular relates to a novel magnetic Fe / CMOF composite material for removing organic dyes and heavy metal ion pollution in water bodies and a preparation method thereof. The composite material can quickly absorb and remove organic dyes and heavy metal ion pollutants in the water body with high capacity, and at the same time use an external magnetic field to perform fast magnetic separation. The composite material is easy to regenerate and can be reused for many times. technical background [0002] With the development of industrialization in our country, a large amount of organic dye wastewater and wastewater containing heavy metal ions are discharged into rivers every year, resulting in organic dye pollution and heavy metal ion pollution of water bodies. As a traditional adsorption material, carbon materials play an important role in wastew...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28
Inventor 叶芳贵熊裕豪苏林静赵书林
Owner GUANGXI NORMAL UNIV
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