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Carbon material coated spinel iron oxide in-situ growth MOFs adsorption catalytic complex as well as preparation method and application thereof

A technology of in-situ growth of iron oxide, applied in the fields of water treatment and catalysis, which can solve the problems of affecting catalytic efficiency and easy aggregation, and achieve the effect of efficient catalytic removal, simple process operation and great harm

Active Publication Date: 2021-05-28
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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  • Carbon material coated spinel iron oxide in-situ growth MOFs adsorption catalytic complex as well as preparation method and application thereof
  • Carbon material coated spinel iron oxide in-situ growth MOFs adsorption catalytic complex as well as preparation method and application thereof
  • Carbon material coated spinel iron oxide in-situ growth MOFs adsorption catalytic complex as well as preparation method and application thereof

Examples

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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 coated spinel iron oxide in-situ growth MOFs adsorption catalytic complex, a preparation method of the carbon material coated spinel iron oxide in-situ growth MOFs adsorption catalytic complex and application of the carbon material coated spinel iron oxide in water treatment catalysis. The preparation method comprises the steps of 1) preparing a magnetic nanomaterial; 2) preparing carbon material-coated magnetic spinel iron oxide TFe2O4 from the nano spinel ferrite obtained in the step 1), the carbon material and ultrapure water according to a certain proportion; and 3) preparing a carbon material-coated magnetic carbon material in-situ growth MOFs material from the carbon material-coated magnetic TFe2O4 obtained in the step 2), an organic ligand and ultrapure water according to a certain proportion, namely the carbon material-coated spinel iron oxide TFe2O4 in-situ growth MOFs adsorption catalytic complex. The complex is simple in preparation process operation, rich in raw material source, low in manufacturing cost, high in magnetic recovery capacity, excellent in regeneration performance and capable of efficiently adsorbing and removing heavy metal 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 Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01J31/28B01J31/32C02F1/72C02F101/30
CPCB01J20/06B01J20/226B01J20/20B01J20/28009B01J31/28B01J31/32C02F1/725C02F1/722C02F2101/30C02F2305/023B01J35/33
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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