Cutting of multi walled carbon nanotubes

Jinyong Li; Yafei Zhang

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Cutting of multi walled carbon nanotubes

机译：切割多壁碳纳米管

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Multi walled carbon nanotubes (MCNT) synthesized by CVD method have been successfully cut into different lengths by controlling H_2SO_4/HNO_3 (5:3) oxidation time. During the cutting process H_2SO_4 and HNO_3 were added independently and the oxidation processes were carried out at a lower temperature to void excess weight loss and damage to MCNT. The resulting shorted MCNT (s-MCNT) formed stable dispersion state in the polar solvents without the help of surfactants that provided possibility for further functionalization and application. Moreover, NaOH solution was used to determine the total percentage of acidic sites and the total percentage of acidic sites are about 0.2-1%.

机译：通过控制H_2SO_4 / HNO_3（5：3）的氧化时间，成功地将通过CVD法合成的多壁碳纳米管（MCNT）切成不同的长度。在切割过程中，分别添加H_2SO_4和HNO_3，并在较低的温度下进行氧化过程，以消除多余的重量损失和对MCNT的破坏。所得的短路MCNT（s-MCNT）在极性溶剂中形成稳定的分散状态，无需表面活性剂的帮助，为进一步的功能化和应用提供了可能。此外，使用NaOH溶液确定酸性位点的总百分比，并且酸性位点的总百分比为约0.2-1％。

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来源
《Applied Surface Science》 |2006年第8期|p.2944-2948|共5页
作者
Jinyong Li; Yafei Zhang;
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作者单位

National Key Laboratory of Nano/Micro Fabrication Technology Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Institute of Micro and Nano Science and Technology, Shanghai Jiaotong University, Shanghai 200030, PR China;

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原文格式 PDF
正文语种 eng
中图分类应用物理学;
关键词
multi walled carbon nanotubes (MCNT); cutting; titration; scanning electron microscopy;

机译：多壁碳纳米管;切割;滴定;扫描电镜;

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Cutting of multi walled carbon nanotubes

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