Surface modification and dispersion of multi-walled carbon nanotubes

被引：0

作者：

Lu Zhihua ^{[1
,2
]}

Sun Kangning ^{[1
]}

Ren Shuai ^{[1
]}

Jiao Mingchun ^{[2
]}

机构：

[1] Shandong Univ, Key Lab Engn Ceram Shandong Prov, Jinan 250061, Peoples R China

[2] Jining Teachers Coll, Dept Phys, Jining 272000, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2007年 / 36卷

关键词：

multi-walled carbon nanotubes; surface modification; dispersion;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

After being refluxed with concentrated nitric acid for different time at 120 degrees C, the multi-walled carbon nanotubes (MWNTs) were modified with sodium dodecyl sulfate (SDS). The MWNTs were characterized with TEM and IR. in addition, UV-vis spectrophometric measurement was used to quantitatively characterize colloidal stability of the dispersion. It's found that the carbon nanotubes refluxed for 4 h had a uniform length with many hydroxyl groups and carboxyl groups on the surface. Experimental results show that the addition of SDS could significantly improve the dispersion of MWNTs in water, and after 80 h, the concentration decreased very slowly to 90% of its originality.

引用

页码：100 / 103

页数：4

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