Preparation method of carbon encapsulated magnetic C/Fe3O4 nano composite material and application thereof

A nanocomposite material, carbon coating technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the problems of low specific surface area, increased functional groups, low porosity, etc., and achieves a simple process. , The effect of improving water solubility and low cost

Inactive Publication Date: 2015-04-08
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these carbon-coated Fe 3 o 4 The common characteristics of nanocomposites are: low specific surface area, low porosity, and the material surface has not been further functionalized to increase its functional groups, so carbon-coated Fe 3 o 4 Applications of nanocomposites are limited

Method used

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  • Preparation method of carbon encapsulated magnetic C/Fe3O4 nano composite material and application thereof
  • Preparation method of carbon encapsulated magnetic C/Fe3O4 nano composite material and application thereof
  • Preparation method of carbon encapsulated magnetic C/Fe3O4 nano composite material and application thereof

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Effect test

Embodiment 1

[0029] Carbon coated magnetic C / Fe 3 o 4 The preparation method of the nanocomposite material adopts hydrothermal method and thermal decomposition method, using pure water as a solvent, and the specific steps are: at room temperature, add 1mmol FeCl to a polytetrafluoroethylene-lined reactor containing 40ml of water 3 ·6H 2 O and 2 mmol Na 2 B 4 o 7 , after stirring evenly, add 8mmol solid NaOH, stir until completely dissolved, put the reaction kettle at 140°C for constant temperature reaction for 12h, then cool down, and centrifuge the reaction solution at 6000r / min. Collect the precipitate, divide distilled water, wash several times with absolute ethanol, and then place it in a vacuum oven at 60°C for drying; then the obtained 1.5g Fe 2 o 3 Add the nanoparticles into the dissolved sodium alginate solution with a concentration of 15g / L. After stirring for 30min, add the obtained mixed solution dropwise to the prepared CaCl solution with a concentration of 21g / L using a ...

Embodiment 2

[0033] Carbon coated magnetic C / Fe 3 o 4 The preparation method of the nanocomposite material adopts hydrothermal method and thermal decomposition method, using pure water as a solvent, and the specific steps are: at room temperature, add 1mmol FeCl to a polytetrafluoroethylene-lined reactor containing 40ml of water 3 ·6H 2 O and 2 mmol Na 2 B 4 o 7 , after stirring evenly, add 8mmol solid NaOH, stir until completely dissolved, put the reaction kettle at 140°C for constant temperature reaction for 12h, then cool down, and centrifuge the reaction solution at 6000r / min. Collect the precipitate, divide distilled water, and wash several times with absolute ethanol, and then place it in a vacuum oven at 80°C for drying; then the obtained 1.5g Fe 2 o 3 Add the nanoparticles into the dissolved sodium alginate solution with a concentration of 15g / L. After stirring for 30min, add the obtained mixed solution dropwise to the prepared CaCl solution with a concentration of 21g / L usin...

Embodiment 3

[0035] Carbon coated magnetic C / Fe 3 o 4 The preparation method of the nanocomposite material adopts hydrothermal method and thermal decomposition method, using pure water as a solvent, and the specific steps are: at room temperature, add 2mmol FeCl to a polytetrafluoroethylene-lined reactor containing 80ml of water 3 ·6H 2 O and 4 mmol Na 2 B 4 o 7 , after stirring evenly, add 16mmol solid NaOH, stir until completely dissolved, put the reaction kettle at 140°C for constant temperature reaction for 12h, then cool down, and centrifuge the reaction solution at 6000r / min. The precipitate was collected, washed with distilled water and absolute ethanol several times, and then dried in a vacuum oven at 60°C; then the obtained 1.5g Fe 2 o 3 Add the nanoparticles into the dissolved sodium alginate solution with a concentration of 15g / L. After stirring for 30min, add the obtained mixed solution dropwise to the prepared CaCl solution with a concentration of 21g / L using a syringe. ...

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Abstract

The invention discloses a preparation method of a carbon encapsulated magnetic C/Fe3O4 nano composite material and an application thereof. The invention belongs to the technical field of a magnetic nano-material, and the carbon encapsulated magnetic C/Fe3O4 nano composite material can be prepared by using a hydrothermal method and a thermal decomposition method through synthesis. The carbon encapsulated magnetic C/Fe3O4 nano composite material is used for processing a dye methylene blue in waste water. The preparation method has the beneficial effect of simple process, high material purity, wide application scope, no residues, no toxic and side effect, and easy separation, and can be expected for wide application in environment engineering field.

Description

technical field [0001] The invention relates to the technical field of magnetic nanomaterials, in particular to a carbon-coated magnetic C / Fe 3 o 4 Preparation methods and applications of nanocomposites. Background technique [0002] Magnetic Fe 3 o 4 Nanoparticles are widely used in magnetic fluids, microwave absorption, adsorption and removal of water pollutants, precious metal recovery, catalysis, targeted drug carriers, and biological protein separation (Ji Junhong, Ji Shengfu, Yang Wei, Li Chengyue, Magnetic Fe 3 o 4 Preparation and application of nanocrystals, Advances in Chemistry, 2010,22(8):1566-1574). In the 1980s, Sugimot and Matijevic first successfully prepared Fe with a very narrow particle size distribution. 3 o 4 nanoparticles. Since then, people have successfully synthesized Fe3O4 and ferrite nanoparticles using various chemical methods, including coprecipitation method, microemulsion method, microwave plasma method, sol-gel method, pyrolysis method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01B31/02B82Y30/00H01F1/11
Inventor 段升霞唐荣风李蕾张亚炜曾涑源孙德志
Owner LIAOCHENG UNIV
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