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Purification of CVD synthesized single-wall carbon nanotubes by different acid oxidation treatments

2004; IOP Publishing; Volume: 15; Issue: 11 Linguagem: Inglês

10.1088/0957-4484/15/11/047

1361-6528

Li Yu, Xiaobin Zhang, Junhang Luo, Wanzhen Huang, J.P. Cheng, Zhiqiang Luo, Ting Li, Fu Liu, Guoliang Xu, Xiaoxing Ke, Li Lin, H. J. Geise,

Nanopore and Nanochannel Transport Studies

Different acid oxidation methods were systematically carried out to purify the SWNTs synthesized by CVD. The results show that the best purification process can produce over 98% pure single-wall carbon nanotubes within 2 h. In this process, it is found by Raman characterization that the amount of nanotubes with small diameters do not diminish within 3 h.