公开(公告)号：KR1020030046858A

公开(公告)日：2003-06-18

申请号：KR1020010077141

申请日：2001-12-06

Applicant: 전북대학교산학협력단

Inventor： 한윤봉 ,  정탁

IPC: C01B31/02 ,  B82B3/00 ,  B82Y40/00

CPC classification number: C01B32/17 ,  C01B32/159 ,  C01B2202/02 ,  C01B2202/06 ,  C01B2202/30

Abstract: PURPOSE: A high yield purification method of single-walled carbon nanotubes is provided to purify the single-walled carbon nanotubes in high purity and high yield by effectively removing impurities so that the single-walled carbon nanotubes are used as materials for semiconductor device, display device and secondary battery electrode. CONSTITUTION: The high yield purification method of single-walled carbon nanotubes using combined liquid and gas phase purification method comprises first process of treating the single-walled carbon nanotubes with an acid solution to remove catalytic metal particles such Ni, Co, and Fe, washing the acid solution treated single-walled carbon nanotubes using distilled water, and drying the distilled water washed single-walled carbon nanotubes; second process of removing impure carbon particles from the dried single-walled carbon nanotubes using a H2S-O2 mixed gas after the first process; third process of rinsing the impure carbon particle removed single-walled carbon nanotubes using an acid solution after the second process; and fourth process drying the rinsed single-walled carbon nanotubes after the third process, wherein a liquid treating process for using acid to remove metallic constituents and thermal oxidation process with the H2S-O2 mixed gas are continuously or reversely applied to the high yield purification method, and wherein oxidation rate is controlled by adding third gas constituents to the H2S-O2 mixed gas introduced in the second process.

Abstract translation: 目的：提供单壁碳纳米管的高产率纯化方法，通过有效去除杂质，以高纯度和高产率纯化单壁碳纳米管，使单壁碳纳米管用作半导体器件，显示器材料 器件和二次电池电极。 构成：使用组合液相和气相纯化方法的单壁碳纳米管的高产率纯化方法包括用酸溶液处理单壁碳纳米管以除去催化金属颗粒如Ni，Co和Fe，洗涤 使用蒸馏水处理单壁碳纳米管的酸溶液，并干燥蒸馏水洗涤的单壁碳纳米管; 在第一种方法之后使用H 2 S-O 2混合气体从干燥的单壁碳纳米管中除去不纯的碳颗粒的第二种方法; 在第二种方法之后使用酸性溶液冲洗不纯的碳颗粒的第三种方法去除单壁碳纳米管; 第四工序在第三工序之后干燥漂洗后的单壁碳纳米管，其中使用酸除去金属组分的液体处理方法和用H 2 S-O 2混合气体进行热氧化处理连续或反向施加于高产率纯化方法 ，并且其中通过向第二工艺中引入的H 2 S-O 2混合气体中加入第三气体成分来控制氧化速率。