Ordered mesoporous carbon/Nafion as a versatile and selective solid-phase microextraction coating
| Autor: | Wei Xing, Liwen Luo, Jingbin Zeng, Jianfeng Yu, Bingwen Cui, Cuiying Zhao, Zifeng Yan, Xi Chen, Fazle Subhan, Chen Jingjing |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_element
Carbon nanotube engineering.material Solid-phase microextraction Biochemistry Analytical Chemistry law.invention chemistry.chemical_compound Phenols Coating law Nafion Benzene Derivatives Amines Solid Phase Microextraction Chromatography Nanotubes Carbon Organic Chemistry Extraction (chemistry) Electrochemical Techniques General Medicine Mesoporous silica Stainless Steel Carbon Fluorocarbon Polymers Petroleum chemistry engineering Feasibility Studies Mesoporous material Porosity |
| Zdroj: | Journal of Chromatography A. 1365:29-34 |
| ISSN: | 0021-9673 |
| DOI: | 10.1016/j.chroma.2014.08.094 |
| Popis: | In this study, ordered mesoporous carbon (OMC) with large surface area (1019m(2)g(-1)), uniform mesoporous structure (pore size distribution centering at 4.2nm) and large pore volume (1.46cm(3)g(-1)) was synthesized using 2D hexagonally mesoporous silica MSU-H as the hard template and sucrose as the carbon precursor. The as-synthesized OMC was immobilized onto a stainless steel wire using Nafion as a binder to prepare an OMC/Nafion solid-phase microextraction (SPME) coating. The extraction characteristics of the OMC/Nafion coating were extensively investigated using a wide range of analytes including non-polar (light petroleum and benzene homologues) and polar compounds (amines and phenols). The OMC/Nafion coating exhibited much better extraction efficiency towards all selected analytes than that of a multi-walled carbon nanotubes/Nafion coating with similar length and thickness, which is ascribed to its high surface area, well-ordered mesoporous structure and large pore volume. When the OMC/Nafion coating was used to extract a mixture containing various kinds of analytes, it possessed excellent extraction selectivity towards aromatic non-polar compounds. In addition, the feasibility of the OMC/Nafion coating for application in electrochemically enhanced SPME was demonstrated using protonated amines as model analytes. |
| Databáze: | OpenAIRE |
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