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Amino functionalized superparamagnetism carbon nanosphere and preparation method thereof

An amino-functionalized, superparamagnetic technology, which is applied in the preparation of microspheres, nanotechnology for materials and surface science, nanotechnology, etc. The effect of wide practicability and wide application prospects

Active Publication Date: 2012-12-05
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the limitations of the traditional hydrothermal method, there is no report on the preparation of amino-functionalized superparamagnetic carbon nanospheres

Method used

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  • Amino functionalized superparamagnetism carbon nanosphere and preparation method thereof
  • Amino functionalized superparamagnetism carbon nanosphere and preparation method thereof
  • Amino functionalized superparamagnetism carbon nanosphere and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Weigh 706.3 mg iron acetylacetonate and add it to 20 mL polyethylene glycol 200, sonicate for 5 min to obtain 0.1 molL -1 Iron acetylacetonate solution; Weigh 360.0 mg of glucose and add it to the above iron acetylacetonate solution, sonicate for 5 min to obtain a mixed solution; transfer the above mixed solution to an autoclave, add 1 mL of ammonia water (NH 3 percentage content, 28%), tighten the autoclave, and react at 240°C for 24 h; after the reaction, cool down to room temperature naturally, and the obtained precipitate becomes black powder after magnetic separation, washing, and drying. The product was characterized by scanning electron microscopy, which confirmed that the diameter of the obtained aminated superparamagnetic carbon nanospheres was 10-30 nm; by X-ray diffraction, it was confirmed that the product was carbon-coated ferric oxide; by high-resolution transmission electron microscopy Characterization, confirmed that the inner core of magnetic carbon nan...

Embodiment 2

[0039] Weigh 372.1 mg ferrocene into 20 mL polyethylene glycol 200, sonicate for 5 min to obtain 0.1 molL -1 ferrocene solution; weigh 684.6 mg sucrose and add it to the above ferrocene solution, and ultrasonicate for 5 min to obtain a mixed solution; transfer the above mixed solution to an autoclave, add 1 mL of ammonia water (NH 3 percentage content, 28%), screw the autoclave tightly, and react at 240°C for 24 h. All the other conditions are the same as in Example 1, and the superparamagnetic carbon nanomaterial of amino functionalization and core-shell structure is obtained, and the mass percentage of carbon in the product is 94%, and the specific surface area of ​​the product is 50.0 m 2 / g.

Embodiment 3

[0041] Weigh 706.3 mg of iron acetylacetonate into 20 mL of polyethylene glycol 200, sonicate for 5 min to obtain 0.1 molL -1 Iron acetylacetonate solution; weigh 684.6 mg sucrose and add it to the above iron acetylacetonate solution, and ultrasonicate for 5 min to obtain a mixed solution; transfer the above mixed solution to an autoclave, add 1 mL of ammonia water (NH 3 percentage content, 28%), screw the autoclave tightly, and react at 240°C for 24 h. The rest of the conditions are the same as in Example 1, and the superparamagnetic carbon nanomaterial with amino functionalization and core-shell structure is obtained, and the mass percentage of carbon in the product is 39.1%, and the specific surface area of ​​the product is 77.8 m 2 / g.

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Abstract

The invention discloses an amino functionalized superparamagnetism carbon nanosphere and a preparation method of the amino functionalized superparamagnetism carbon nanosphere. The nanosphere comprises a core and an outer layer, wherein the core is wrapped by the outer layer; the nanosphere is characterized in that the core is a ferroferric oxide nano particle, the outer layer is a carbon shell layer, and an amino is connected onto the carbon shell layer. Compared with the prior art, dicyclopentadienyl iron and ferric acetylacetonate are taken as aniron source, a cane sugar or glucose is taken as a carbon source, then the iron source and the carbon source react in a polyethylene glycol or tetraglycol solution, so that the superparamagnetism carbon nanosphere with rich amines on the surface and a core-shell structure is obtained, and the prepared magnetism carbon nanosphere is widely applied to the fields of biology, catalysis, analysis, energy sources, and information storage. Equipment needed in the preparation process is cheap, the reaction raw materials and the solvent are safe and free from toxic, the prepared nanosphere is economical and environment-friendly, is wide in practicality and has wide application prospect.

Description

technical field [0001] The invention relates to amino-functionalized magnetic carbon nanospheres, in particular to a method for preparing amino-functionalized paramagnetic carbon nanospheres. Background technique [0002] Ferroferric oxide magnetic nanoparticles have attracted much attention due to their special properties and wide application prospects in biomedicine and other fields. However, iron ferric oxide nanoparticles have the following problems in practical application: under the magnetic dipole attraction, iron ferric oxide nanoparticles are very easy to agglomerate; iron ferric oxide nanoparticles contain Fe 2+ , low chemical stability, easy to be oxidized. In order to solve the above problems, protective layers such as polymers, biomacromolecules, or silicon dioxide are often wrapped on the surface of ferroferric oxide nanoparticles to improve the stability and biological safety of ferroferric oxide magnetic nanomaterials. [0003] Carbon materials have high ch...

Claims

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Application Information

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IPC IPC(8): C01G49/08B01J13/02H01F1/01B82Y40/00B82Y30/00
Inventor 陈志明薛正莲陈林
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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