Onion shaped fullerene purification process

An onion-like fullerene and process technology, applied in the field of onion-like fullerene purification, can solve the problems of onion-like fullerene structure defects and unsatisfactory purification effect, achieve good purification effect, improve crystallization degree, The effect of simple process

Inactive Publication Date: 2005-01-19
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Some references have reported the application of classical acid soaking to achieve the purpose of purification. Although this can remove certain impurities, it will bring certain structural defects to onion-like fullerenes at the same time, and the purification effect is not ideal. Therefore, We think it is not desirable

Method used

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  • Onion shaped fullerene purification process

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Take 1 gram of onion-like fullerene primary product and place it in a mortar and grind for 1 hour. Then, put the powder in 300ml of HCl / HNO with a volume ratio of 1:1:4 3 / H 2 O solution, stirred for 15 hours. Filter the upper layer suspension, and repeatedly wash with deionized water until the pH value is neutral, and dry. Finally, put the dried powder into a resistance furnace, heat it to 450° C. in air for 20 minutes, and cool it to room temperature in the furnace to obtain pure onion-like fullerene.

Embodiment 2

[0022] Take 2 grams of onion-like fullerene primary product and place it in a mortar and grind for 2 hours. Then, put the powder in 300ml of HCl / HNO with a volume ratio of 1:1:1 3 / H 2 O solution, stirred for 10 hours. Filter the upper layer suspension, and repeatedly wash with deionized water until the pH value is neutral, and dry. Finally, the dried powder is put into a resistance furnace, heated to 550° C. for 15 minutes in the air state, and cooled to room temperature in the furnace to obtain pure onion-like fullerene.

Embodiment 3

[0024] Take 1 gram of onion-like fullerene primary product and place it in a mortar and grind for 2 hours. Then, put the powder in 300ml of HCl / HNO with a volume ratio of 1:1:2 3 / H 2 O solution, stirred for 10 hours. The upper suspension was filtered, washed repeatedly with deionized water, and dried. Finally, put the dried powder into a resistance furnace, heat it to 500°C in the air state, keep it warm for 30 minutes, and cool the furnace to room temperature to obtain pure onion-like fullerene.

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Abstract

The invention discloses an onion shaped fullerene purification process comprising the steps of acid liquor thermal treatment, potassium dichromate oxidization, extraction thermal treatment, purification through vacuum heat treatment and ball grinding.

Description

technical field [0001] The invention relates to a method for purifying onion-like fullerene, in particular to a process for purifying the primary product of onion-like fullerene. technical background [0002] At present, onion-like fullerene is a class of carbon nanomaterials with broad application prospects. However, the research on its mechanical, electrical, and magnetic properties still lags behind, which greatly affects the research and application of this material. The crux of the problem is that there is no good method to prepare high-purity onion-like fullerenes, so it is particularly important to study the separation and purification of the prepared onion-like fullerene primary products. [0003] Existing literature reports on C 60 , Separation and purification of carbon nanotubes, but there is no report on the systematic purification of the primary product of onion-like fullerene, and there is no patent publication on the purification technology of the primary pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 许并社鲍慧强韩培德贾虎生刘旭光卫英慧王晓敏
Owner TAIYUAN UNIV OF TECH
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