期刊
TALANTA
卷 99, 期 -, 页码 580-585出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2012.06.038
关键词
Carbon nanotubes; Separation; HPLC; Aromatic compound
In this paper, an effective and simple method was used for the immobilization of single wall carbon nanotubes (SWCNTs) on a monolithic HPLC material containing 2 mu m macropore sizes and 13 nm mesopore sizes. The chromatographic support was coated with ultra short SWCNTs in a noncovalent way to preserve the sp(2) nanotube structure and thus their physico-chemical properties. It was demonstrated that the amino-surface of the monolith stabilized with 1-methyl-2-pyrrolidinone efficiently and stably adsorbed SWCNTs onto the chromatographic support. It was shown that this novel stationary phase was very useful for the HPLC isocratic mode separation of a series of small aromatic compounds in a very short analysis time. The comparison with a classical equivalent C18 monolithic column showed that the SWCNT column presented the best efficiency in similar chromatographic conditions. (C) 2012 Elsevier B.V. All rights reserved.
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