Hybrid magnetic amphiphilic composites based on carbon nanotube/nanofibers and layered silicates fragments as efficient adsorbent for ethynilestradiol
Copyright © 2012 Elsevier Inc. All rights reserved..
In this work, hybrid magnetic amphiphilic composites were prepared by the catalytic growth of carbon nanotubes (CNTs) and nanofibers CNF on layered silicates fragments. SEM, TEM, Raman, XRD, Mössbauer, TG/DTA showed that CVD with CH(4) at 800°C produced CNF and magnetic Fe cores fixed on the surface of microfragments of silicates layers. Due to the amphiphilic character, the composites can be easily dispersed in water and efficiently adsorb hydrophobic contaminant molecules. For example, the composites showed remarkable adsorption capacities for the hormone ethinylestradiol, e.g. 2-4 mg m(-2), compared to ca. 0.1 mg m(-2) obtained for high surface area activated carbon and multiwall CNT. These results are discussed in terms of a high hydrophobic exposed surface area of the CNT and CNF fixed on the layered silicates fragments surface. Moreover, the composites can be easily removed from water by a simple magnetic separation process.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2012 |
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| Erschienen: |
2012 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:379 |
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| Enthalten in: |
Journal of colloid and interface science - 379(2012), 1 vom: 01. Aug., Seite 84-8 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Purceno, Aluir D [VerfasserIn] |
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| Links: |
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| Themen: |
423D2T571U |
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| Anmerkungen: |
Date Completed 16.10.2012 Date Revised 21.11.2013 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jcis.2012.04.018 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM217912966 |
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| 245 | 1 | 0 | |a Hybrid magnetic amphiphilic composites based on carbon nanotube/nanofibers and layered silicates fragments as efficient adsorbent for ethynilestradiol |
| 264 | 1 | |c 2012 | |
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| 500 | |a Date Completed 16.10.2012 | ||
| 500 | |a Date Revised 21.11.2013 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2012 Elsevier Inc. All rights reserved. | ||
| 520 | |a In this work, hybrid magnetic amphiphilic composites were prepared by the catalytic growth of carbon nanotubes (CNTs) and nanofibers CNF on layered silicates fragments. SEM, TEM, Raman, XRD, Mössbauer, TG/DTA showed that CVD with CH(4) at 800°C produced CNF and magnetic Fe cores fixed on the surface of microfragments of silicates layers. Due to the amphiphilic character, the composites can be easily dispersed in water and efficiently adsorb hydrophobic contaminant molecules. For example, the composites showed remarkable adsorption capacities for the hormone ethinylestradiol, e.g. 2-4 mg m(-2), compared to ca. 0.1 mg m(-2) obtained for high surface area activated carbon and multiwall CNT. These results are discussed in terms of a high hydrophobic exposed surface area of the CNT and CNF fixed on the layered silicates fragments surface. Moreover, the composites can be easily removed from water by a simple magnetic separation process | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Nanotubes, Carbon |2 NLM | |
| 650 | 7 | |a Silicates |2 NLM | |
| 650 | 7 | |a Surface-Active Agents |2 NLM | |
| 650 | 7 | |a Ethinyl Estradiol |2 NLM | |
| 650 | 7 | |a 423D2T571U |2 NLM | |
| 700 | 1 | |a Teixeira, Ana Paula C |e verfasserin |4 aut | |
| 700 | 1 | |a de Souza, Nubia Janaína |e verfasserin |4 aut | |
| 700 | 1 | |a Fernandez-Outon, Luis E |e verfasserin |4 aut | |
| 700 | 1 | |a Ardisson, José D |e verfasserin |4 aut | |
| 700 | 1 | |a Lago, Rochel M |e verfasserin |4 aut | |
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