| Layer-by-layer self-assembled multi-walled carbon nanotubes/silica microsphere composites as stationary phase for high-performance liquid chromatography | |
| Department | 甘肃省天然药物重点实验室 |
Liang XJ(梁晓静) ; Liu SJ(刘淑娟); Liu HM(刘红妹); Liu X(刘霞); Jiang SX(蒋生祥)
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| 2010 | |
| Source Publication | J. Sep. Sci.
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| ISSN | 1615-9314 |
| Volume | 33Pages:3304-3312 |
| Abstract | Multi-walled carbon nanotubes (MWCNTs) were layer-by-layer assembled onto silica microspheres to form MWCNTs/SiO2 composites and were characterized by surface analysis,elemental analysis, and contact angle. The composite was used as a stationary phase in HPLC for the separation of many kinds of aromatic compounds. The separation of polycyclic aromatic hydrocarbons (PAHs) affected by the number of MWCNTs layers on SiO2 was investigated. Retention times and resolutions of PAHs were affected by the assembled layer of MWCNTs and the type of organic additive in the mobile phase. When the MWCNTs layer increased to 5 (MWCNTs/SiO2-5), PAHs can be completely separated. Aromatic compounds with different substituents can be well separated when only water was used as the eluent on the MWCNTs/SiO2-5 column. Decreasing the pH of the eluent can increase the retention factors of organic acids. Organic amines can also be separated with acetonitrile as organic additive, which were eluted in the order of the electronic cloud density of their aromatic rings. Comparing the MWCNTs/SiO2-5 column with a commercial HPLC column, it was clearly shown that the commercial column exhibited the characteristic of hydrophobicity, and the MWNCTs/SiO2-5 column exhibited the characteristic of a large p-electron system. |
| Keyword | Chromatographic Stationary Phase Layer-by-layer Self-assembly Multi-walled Carbon Nanotubes Silica Poly(Sodium-p-styrenesulfonate) |
| Subject Area | 分析化学与药物化学 |
| Funding Organization | the National Natural Science Foundation of China (20805052, 20875096);National Science & Technology Major Proiect of China (2008ZX05010,2008ZX05011) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 药物分离材料研究组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/1261 |
| Collection | 中科院西北特色植物资源化学重点实验室/甘肃省天然药物重点实验室 |
| Corresponding Author | Jiang SX(蒋生祥) |
| Recommended Citation GB/T 7714 | Liang XJ,Liu SJ,Liu HM,et al. Layer-by-layer self-assembled multi-walled carbon nanotubes/silica microsphere composites as stationary phase for high-performance liquid chromatography[J]. J. Sep. Sci.,2010,33:3304-3312. |
| APA | 梁晓静,刘淑娟,刘红妹,刘霞,&蒋生祥.(2010).Layer-by-layer self-assembled multi-walled carbon nanotubes/silica microsphere composites as stationary phase for high-performance liquid chromatography.J. Sep. Sci.,33,3304-3312. |
| MLA | 梁晓静,et al."Layer-by-layer self-assembled multi-walled carbon nanotubes/silica microsphere composites as stationary phase for high-performance liquid chromatography".J. Sep. Sci. 33(2010):3304-3312. |
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