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Preparation method of high-graphitized nanometer carbon material

A nano-carbon material and graphitization technology, applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of high cost, complex shape control method, expensive conductive polymer precursor, etc., and achieve low cost and high raw material Wide range of options, uniform and controllable particle size

Inactive Publication Date: 2009-10-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductive polymer precursor is expensive, and the shape control method is complicated and costly.

Method used

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  • Preparation method of high-graphitized nanometer carbon material
  • Preparation method of high-graphitized nanometer carbon material
  • Preparation method of high-graphitized nanometer carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 0.5g polystyrene, dissolve it in 20ml ethyl acetate, add 0.5g of 600nm Ni particle powder prepared by polyol method, ultrasonic for 10 minutes, make the Ni particles uniformly dispersed in the solution, use a rotary evaporator to evaporate the solvent , To obtain a uniformly dispersed Ni / PS black mixture. Transfer the mixture to a glass vial, heat it in a microwave oven for 1 minute (Haier Haier MA 2270EGC household microwave oven, microwave frequency 2.45GHz, output power 700W), take it out after cooling, and obtain graphite carbon-coated metal Ni particles. The particles still maintain their original size. The obtained particles were added to 20ml of 1M hydrochloric acid, sonicated for 2 hours to dissolve most of Ni, centrifuged, washed, and dried to obtain hollow carbon balls ( figure 1 ), the thickness of the spherical shell is about 15-50nm. Raman scattering spectrum of the product ( figure 2 ) There is only G-band related to graphitic carbon and no D-band repr...

Embodiment 2

[0035] Weigh 0.5g polystyrene, dissolve it in 20ml ethyl acetate, add 0.5g 40nm Ni particle powder prepared by polyol method, ultrasonic for 10 minutes, make the Ni particles uniformly dispersed in the solution, use a rotary evaporator to evaporate the solvent , To obtain a uniformly dispersed Ni / PS black mixture. This mixture was transferred to a glass vial, placed in a microwave oven and heated for 1 minute (the microwave conditions were the same as in Example 1), and then taken out after cooling to obtain graphite carbon coated metal Ni particles ( image 3 ), Ni particles still maintain the original size. Add the obtained particles to 20ml of 1M hydrochloric acid, sonicate for 0.5 hours, centrifuge, wash, and dry to obtain the remaining metal carbon balls ( Figure 4 ), the thickness of the spherical shell is about 2-5nm. Ultrasonic treatment for more than 2 hours can obtain hollow carbon balls.

Embodiment 3

[0037] Weigh 0.4g polystyrene and dissolve it in 20ml ethyl acetate, then add 0.2g of 8nm Ni particle powder prepared by microemulsion method, ultrasonic for 10 minutes, make the Ni particles uniformly dispersed in the solution, and use a rotary evaporator to evaporate the solvent , To obtain a uniformly dispersed Ni / PS black mixture. Transfer the mixture to a glass vial, heat it in a microwave oven for 1 minute (Panasonic NN-GD586A household microwave oven, microwave frequency 2.45GHz, output power 1000W), take it out after cooling, and treat with 1M hydrochloric acid for 2 hours to obtain hollow graphite carbon Ball and multi-walled carbon nanotube mixture ( Figure 5 and Figure 6 ), the carbon tube content is about half, the tube diameter is 8-13nm, and the carbon tube length is 200-600nm.

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Abstract

The invention relates to a preparation method of a high-graphitized nanometer carbon material. The method comprises the following steps: (1), uniformly mixing magnetic metal or metal oxide particles with a solid organic carbon precursor material, wherein the magnetic metal or metal oxide particles in the mixture account for 10 to 80 percent of the total weight; and (2) putting the mixture in a microwave oven and processing in microwave for 3 seconds or longer under the microwave power of 300W to 3000W so as to obtain carbon-wrapped magnetic metal nanometer particles or a multi-wall carbon nanometer pipe material. The prepared carbon material has high graphitization degree, controllable grain diameter and thickness, simple technology, low preparation cost, high product purity, wide selective raw material range and easy mass preparation.

Description

Technical field [0001] The invention relates to a carbon nano material and a magnetic metal nano material, in particular to a method for preparing a highly graphitized carbon-coated magnetic metal nano particle, a hollow carbon ball and a multi-wall carbon nano tube material with a controllable particle size. Background technique [0002] Highly graphitized carbon materials, such as carbon balls, carbon nanotubes, carbon fibers, etc., are being widely used in engineering, electronics, chemical, biological and other fields due to their good electronic and mechanical properties, chemical inertness, and biocompatibility . Among them, graphitized hollow carbon spheres have broad application prospects in supercapacitance, catalyst loading, drug slow release, etc., while carbon-coated magnetic metal particles protect the active magnetic metal due to the excellent physical and chemical properties of the graphite shell. It has important applications in the fields of electromagnetics, opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B22F1/02B82B3/00
Inventor 马丁陈锴包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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