Magnetic MFe2O4/C/M' compound and preparation method thereof using aniline small organic molecules as a carbon source

A technology of small molecules and complexes, applied in the direction of magnetism of organic materials/organic magnetic materials, magnetic objects, magnetic materials, etc., can solve the problems of high cost of carbon sources, uneconomical benefits, etc., to achieve adsorption, increase surface area, High magnetic effect

Active Publication Date: 2013-04-24
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a green material, glucose is costly to prepare carbon source, which seems uneconomical.

Method used

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  • Magnetic MFe2O4/C/M' compound and preparation method thereof using aniline small organic molecules as a carbon source
  • Magnetic MFe2O4/C/M' compound and preparation method thereof using aniline small organic molecules as a carbon source
  • Magnetic MFe2O4/C/M' compound and preparation method thereof using aniline small organic molecules as a carbon source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Fe 3 o 4 Preparation of microspheres

[0036] Prepared by solvothermal method, weigh 0.3g trisodium citrate dihydrate and disperse in 30mL ethylene glycol, stir for 9 hours until dissolved, then add 3.0g sodium acetate trihydrate, 0.819g FeCl 3 ·6H 2 O, stirred until dissolved, then transferred the mixture to a reaction kettle, and reacted at 200°C for 10h. Cool to room temperature, wash with ethanol and water several times, and dry in a vacuum oven at 50°C to obtain Fe 3 o 4 Microspheres.

[0037] (2) Fe 3 o 4 Preparation of / C Composite Nanomaterials

[0038] Prepare a 0.04 g / mL ethanol solution of o-phenylenediamine. Weigh the Fe prepared in experiment (1) 3 o 4 20mg, dispersed in 35mL water, ultrasonically dispersed for 10min, then added 5mL ethanol solution of o-phenylenediamine, stirred for several minutes, transferred to a reaction kettle, and reacted at 160°C for 36h. Cool to room temperature, wash with water several times, and dry in a vacuum ov...

Embodiment 2

[0045] (1) Fe 3 o 4 Preparation of microspheres

[0046] Prepared by solvothermal method, weigh 1.0g trisodium citrate dihydrate and disperse in 30mL ethylene glycol, stir for 9 hours until dissolved, then add 3.0g sodium acetate trihydrate, 0.819g FeCl 3 ·6H 2 O, stirred until dissolved, then transferred the mixture to a reaction kettle, and reacted at 230°C for 20h. Cool to room temperature, wash several times with ethanol and ultrapure water, and dry in a vacuum oven at 50°C to obtain Fe 3 o 4 Microspheres.

[0047] (2) Fe 3 o 4 Preparation of / C Composite Nanomaterials

[0048] Weigh the Fe obtained in experiment (1) 3 o 4 20mg, ultrasonically dispersed in 15mL of 0.02g / mL o-phenylenediamine ethanol solution, stirred for 5h, filtered, washed with ethanol three times, and vacuum-dried at 50°C. Then, the sample was transferred to a muffle furnace, heat-treated at 800 °C for 10 h under a nitrogen atmosphere, and cooled to room temperature to obtain Fe 3 o 4 / C do...

Embodiment 3

[0055] (1) Fe 3 o 4 Preparation of nanoparticles

[0056] Prepared by solvothermal method, weigh 0.318g trisodium citrate dihydrate and disperse in 30mL ethylene glycol, stir for 9 hours until dissolved, then add 1.5g sodium acetate trihydrate, 0.819g FeCl 3 ·6H 2 O, stirred until dissolved, then transferred the mixture to a reaction kettle, and reacted at 200°C for 10h. Cool to room temperature, wash several times with ethanol and ultrapure water, and dry in a vacuum oven at 50°C to obtain 300nm Fe 3 o 4 Microspheres. Then the microspheres were mixed with methanol and ball milled under the protection of argon. Get 7-10nm Fe 3 o 4 Nanoparticles.

[0057] (2) Fe 3 o 4 Preparation of / C Composite Nanomaterials

[0058] Prepare 0.1 g / mL trisodium citrate dihydrate aqueous solution and 0.04 g / mL m-phenylenediamine ethanol solution respectively. Weigh the Fe obtained in experiment (1) 3 o 4 4mg, dispersed in 33mL water, ultrasonically dispersed for 10min, then added ...

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Abstract

A magnetic MFe2O4 / C / M' compound and a preparation method thereof using aniline small organic molecules as a carbon source is characterized in that magnetic nano particles of MFe2O4 are in the center, the middle layer is a carbon layer produced by carbonization of the aniline small organic molecules, a thickness of the middle layer is 1-50 nanometers, the outer layer is M' precious metal, and a thickness of the outer layer is 1-100 nanometers. Preparation processes include the following steps: the first step: preparing the magnetic nanometer particles; the second step: preparing magnetic MFeO4 / C compound nanometer materials; the third step: preparing magnetic precious metal shell MFe2O4 / C / M' compound nanometer particle materials, wherein M in the MFe2O4 is Ferrum (Fe), Cobalt (Co), Manganese (Mn), Nickel (Ni), Zinc (Zn), and Copper (Cu) element, or combination of two above elements; and the precious metal M' is Gold (Au), Platinum (Pt), Copper (Cu), and Palladium (Pd) metal or combination of two above metals. Through coverage of the carbon (C) layer, the surfaces of the magnetic nanometer particles carry amidogen perssads so as to be beneficial for further conduct decoration of metal nanometer particles. And surface area of the compound materials is enlarged so as to be beneficial for absorption of organic molecules. The materials have potential application value in environmental, biomedicine and catalysis aspects.

Description

technical field [0001] The present invention relates to a kind of MFe 2 o 4 / C / M' composite carrier and its preparation method. Background technique [0002] Due to their excellent properties, ferrite nanostructure materials have been widely used in many fields such as data storage, catalysis, sensors, pollutant treatment and biomedicine. Noble metal (M') nanomaterials are widely used in the fields of catalysis, environment and biomedicine due to their high catalytic activity, good biocompatibility, water solubility and outstanding biomolecular connectivity. Therefore, ferrite nanomaterials Composite materials with noble metal nanomaterials have attracted more and more attention. Especially in the field of nanotechnology, composites of magnetic nanoparticles and metals have broad applications in biomolecular detection, imaging, catalysis and biomedical imaging, and drug delivery. In 2007, Sun Shouheng and others successfully synthesized Fe 3 o 4 / Au and Fe 3 o 4 / Au / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/00H01F1/42H01F41/02
Inventor 吴爱国赵新梅
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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