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A carbon material-wrapped spinel iron oxide in-situ growth mofs adsorption catalytic complex and its preparation method and application

An iron oxide, in-situ growth technology, applied in the application fields of water treatment and catalysis, can solve the problems of easy aggregation, affecting the catalytic efficiency, etc., and achieve the effects of simple process operation, efficient catalytic removal, and simple preparation method.

Active Publication Date: 2022-03-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TFe 2 o 4 The high surface area and unique magnetic properties of the material lead to its easy aggregation in practical applications, which affects the catalytic efficiency

Method used

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  • A carbon material-wrapped spinel iron oxide in-situ growth mofs adsorption catalytic complex and its preparation method and application
  • A carbon material-wrapped spinel iron oxide in-situ growth mofs adsorption catalytic complex and its preparation method and application
  • A carbon material-wrapped spinel iron oxide in-situ growth mofs adsorption catalytic complex and its preparation method and application

Examples

Experimental program
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preparation example Construction

[0046] A carbon material wrapped spinel iron oxide TFe 2 o 4 The preparation method of in-situ growth MOFs adsorption catalytic complex is characterized in that it comprises the following steps:

[0047] 1) preparing magnetic nanomaterials, said magnetic nanomaterials are nano spinel ferrite synthesized or purchased by synthetic method;

[0048] In some embodiments, as a preferred technical solution, the magnetic nanomaterial is spinel ferrite synthesized by hydrothermal synthesis.

[0049] 2) The nano-spinel ferrite obtained in step 1), carbon material, and ultrapure water are prepared in a certain ratio to prepare magnetic spinel iron oxide TFe wrapped in carbon material 2 o 4 ;

[0050] Wherein, T is a transition metal element;

[0051] In some embodiments, the T is one or more of Cu, Co, Mn, Zn, Ni;

[0052] As a preferred embodiment, the T is one or more of Cu, Co, Mn;

[0053] 3) The magnetic spinel iron oxide TFe wrapped by the carbon material obtained in step 2)...

Embodiment 1

[0079] Carbon material wrapped spinel iron oxide TFe 2 o 4 In situ growth of MOFs adsorption catalytic complex (CuFe 2 o 4 @GO@MIL-100(Fe), the transition metal is copper, the carbon material is graphene oxide, and the organic ligand is trimesic acid) Preparation:

[0080] 1) Preparation of nano spinel ferrite: 3mMCu 2+ / Fe 3+ (molar ratio is 1:2) the solution uses NH 4 OH to adjust the pH to greater than 10, heat and stir in a water bath at 90°C for 90 minutes, keep the pH of the solution greater than 10 during the heating process, collect the magnetic black precipitate with a magnet after the reaction, wash with ethanol and ultrapure water for 3-4 times, and collect the product. Nano spinel ferrite CuFe 2 o 4 ; Wherein from ferric nitrate (nine water), Cu 2+ From copper nitrate (trihydrate).

[0081] 2) Mix the nano-spinel ferrite prepared in step 1) with the carbon material (GO, graphene oxide is selected in this embodiment) in ultrapure water, and the mixed soluti...

Embodiment 2

[0087] Compared with Example 1, the only difference is the choice of carbon material, which is multi-walled carbon nanotubes, which are commercially available and have a specific surface area of ​​80-250m 2 / g, the pore volume is 0.4-1.2cm 3 / g;

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Abstract

The invention discloses a carbon material-wrapped spinel iron oxide in-situ growth MOFs adsorption catalytic complex and its preparation method and application in water treatment catalysis. The preparation method includes: 1) preparing magnetic nanomaterials, 2) incorporating The nano spinel ferrite obtained in step 1) and carbon material, ultrapure water prepare the magnetic spinel iron oxide TFe wrapped by carbon material in a certain ratio 2 o 4 ; 3) the magnetic TFe wrapped by the carbon material obtained in step 2) 2 o 4 In situ growth of MOFs material with organic ligands and ultrapure water to prepare magnetic carbon material wrapped with carbon material in a certain proportion, that is, carbon material wrapped spinel iron oxide TFe 2 o 4 In situ growth of MOFs to adsorb catalytic complexes. The complex preparation process of the present invention is simple to operate, rich in raw material sources, low in production cost, strong in magnetic recovery capability, excellent in regeneration performance, and capable of efficiently adsorbing and removing heavy metals and trace organic matter in water.

Description

technical field [0001] The invention belongs to the field of compound pollution control of water environment, and relates to carbon material wrapped spinel iron oxide (TFe 2 o 4 ) in situ growth MOFs adsorption catalytic complex and its preparation method and application in water treatment and catalysis. Background technique [0002] my country is a country short of water resources, ranking 13th in the world's water-deficient countries, and the areas that account for more than 50% of the country's land area are dry and water-deficient. Due to the pollution of the water environment, the limited water resources in our country are even more in short supply. Due to the rapid development of the economy, in just 20 years, China's national economy has experienced decades of development in developed countries, but at the same time, our country has also experienced unique compound pollution problems. The complex pollution of the water environment is manifested in the fact that the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01J31/28B01J31/32C02F1/72C02F101/30
CPCB01J20/06B01J20/226B01J20/20B01J20/28009B01J31/28B01J31/32B01J35/0033C02F1/725C02F1/722C02F2101/30C02F2305/023
Inventor 代喜梅李海普姚晶晶杨兆光程梦思余博伦
Owner CENT SOUTH UNIV
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