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Magnetic organic and inorganic hybrid material with multi-level nuclear shell structure and preparation method thereof

A technology of core-shell structure and hybrid materials, which is applied in the preparation of microspheres, the magnetism of inorganic materials, and microcapsule preparations. It can solve the problems of easy decomposition and significant hygroscopicity, and achieve improved dispersion, magnetic positioning, and magnetic recovery. The effect of using

Inactive Publication Date: 2012-07-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lactic acid is a hydrophilic compound containing chiral carbon. It is widely used in the fields of food, asymmetric synthesis and industrial catalysis, but it has significant hygroscopicity and is easy to decompose when heated.

Method used

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  • Magnetic organic and inorganic hybrid material with multi-level nuclear shell structure and preparation method thereof
  • Magnetic organic and inorganic hybrid material with multi-level nuclear shell structure and preparation method thereof
  • Magnetic organic and inorganic hybrid material with multi-level nuclear shell structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 Preparation of salicylic acid intercalated magnetic zinc-aluminum hydrotalcite

[0047] Weigh 10.8116g (0.04mol) FeCl 3 ·6H 2 Dissolve O in 400ml of ethylene glycol, slowly stir and dissolve in a water bath at 40°C to prepare a clear solution, weigh 28.7945g (0.21mol) into it, stir slowly so that no bubbles are generated, until completely dissolved, the solution is khaki. Transfer to a 500ml autoclave, react at 200°C for 8 hours, take it out and cool it to room temperature with tap water, pour out the supernatant, and the lower layer Fe 3 o 4 The purple black solid NdFeB permanent magnet is magnetically separated, washed 3 times with ethanol and 5 times with deionized water until neutral, and dried at 60°C for 24 hours. The water used in the process is deionized water.

[0048] The average particle diameter of the magnetic nano-core was measured to be 383.1 nm. The most probable particle size is 391.7nm.

[0049] Weigh Zn(NO 3 ) 2 ·6H 2 O 0.5355g (0.0...

Embodiment 2

[0052] Example 2 Preparation of salicylic acid intercalated magnetic zinc-aluminum hydrotalcite

[0053] Weigh 10.8116g (0.04mol) FeCl 3 ·6H 2 Dissolve O in 400ml of ethylene glycol, slowly stir and dissolve in a water bath at 40°C to prepare a clear solution, weigh 28.7945g (0.21mol) into it, stir slowly so that no bubbles are generated, until completely dissolved, the solution is khaki. Transfer to a 500ml autoclave, react at 200°C for 8 hours, take it out and cool it to room temperature with tap water, pour out the supernatant, and the lower layer Fe 3 o 4 The purple black solid NdFeB permanent magnet is magnetically separated, washed 3 times with ethanol and 5 times with deionized water until neutral, and dried at 60°C for 24 hours. The water used in the process is deionized water.

[0054] The average particle diameter of the magnetic nano-core was measured to be 383.1 nm. The most probable particle size is 391.7nm.

[0055] Weigh Zn(NO 3 ) 2 ·6H 2 O 0.5355g (0.0...

Embodiment 3

[0057] Example 3 Preparation of Lactic Acid Intercalation Magnetic Zn-Al Hydrotalcite

[0058] Weigh 10.8116g (0.04mol) FeCl 3 ·6H 2 Dissolve O in 400ml of ethylene glycol, slowly stir and dissolve in a water bath at 40°C to prepare a clear solution, weigh 28.7945g (0.21mol) into it, stir slowly so that no bubbles are generated, until completely dissolved, the solution is khaki. Transfer to a 500ml autoclave, react at 200°C for 8 hours, take it out and cool it to room temperature with tap water, pour out the supernatant, and the lower layer Fe 3 o 4 The purple black solid NdFeB permanent magnet is magnetically separated, washed 3 times with ethanol and 5 times with deionized water until neutral, and dried at 60°C for 24 hours. The water used in the process is deionized water.

[0059] The average particle diameter of the magnetic nano-core was measured to be 383.1 nm. The most probable particle size is 391.7nm.

[0060] Weigh Zn(NO 3 ) 2 ·6H 2 O 0.5355g (0.0018mol), A...

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Abstract

A magnetic organic and inorganic hybrid material with a multi-level nuclear shell structure and a preparation method thereof belong to the technical field of organic and inorganic hybrid multi-level material synthesis. The chemical formula of the material is [(M2+) 1 - (N3+) x (OH)2] (Am-) a(Bn-) b.m'H2O.Km'Fe2O4; wherein [(M2+) 1- x (N3+) x (OH)2] (Am-) a (Bn-) b.m'H2O, A-LDHs for short, M'Fe2O4 is magnetic species, A-LDHs is of a hydrotalcite structure of small organic molecule inserted layer wrapped outside kM'Fe2O4 nucleus. First, magnetic nucleus at a micro-nano level is prepared with a solvothermal method, small organic molecules and derivatives are mixed with nitrate of two types of hydrotalcite layer plate elements to prepare mixed saline liquor, then alkaline liquor is placed in dispersing liquor of the magnetic center for precipitation reaction and simultaneously target small organic molecules are arranged between hydrotalcite layers, and the small organic molecule inserted layer hydrotalcite hybrid material with the multi-level nuclear shell structure is obtained. The magnetic organic and inorganic hybrid material with the multi-level nuclear shell structure has potential application in many hot fields such as biomedicine, environmental protection, catalyst preparation and the like.

Description

technical field [0001] The invention belongs to the technical field of synthesis of organic-inorganic hybrid multi-level materials, in particular to a multi-level core-shell magnetic organic-inorganic hybrid material and a preparation method thereof, in particular to salicylic acid and lactic acid intercalated hydrotalcite magnetic multi-level core Shell-structured nano / submicron hybrid materials and their supramolecular assembly preparation. Background technique [0002] Organic-inorganic nano / submicron hybrid materials improve the performance of the overall system due to the modification of inorganic materials by organic components. The selection of components and the innovation of its structure have always been the focus of attention for the optimization of the overall performance of hybrid materials, and in order to facilitate separation, recovery, and recycling, the addition of magnetic response capabilities is becoming more and more important. [0003] Layered inorgan...

Claims

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Application Information

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IPC IPC(8): B01J13/02H01F1/10
Inventor 张慧毕学范婷
Owner BEIJING UNIV OF CHEM TECH
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