Journal article
Rapid assembly of carbon nanotube-based magnetic composites
Materials chemistry and physics, v 128(3), pp 514-518
2011
Abstract
► Trapping of α-haemetite on acid-oxidised carbon nanotubes enables magnetic nanocomposites; ► Coating magnetic carbon nanotubes with silica improves chemical stability in low pH solution; ► Silica-coated magnetic carbon nanotube composites still adsorb polycyclic aromatic hydrocarbons; ► Final composites are useful for organic chemical remediation and rapid adsorbate recovery.
The rapid assembly of magnetic carbon nanotubes is mediated through the electrostatic attraction of α-haematite nanoparticles to carboxylic groups decorating their outer surface. The system is then stabilised through covalently bonding a silica coat using a 3-aminopropyltriethoxysilane precursor, which creates a thin barrier protecting the α-haematite particles from aggressive pH solutions. The nanocomposites can be effectively dispersed in aqueous solution and can be attracted to an external magnetic field. The proposed method can be used for synthesis of magnetic CNTs suitable for assembling densely packed magnetic arrays, remotely guided drug delivery and organic chemical wastewater remediation with the added benefit of nanomaterial recovery. Therein,
p-nitroaniline was demonstrated to still adsorb to uncoated areas of the silica-sheathed magnetic MWCNT composite.
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Details
- Title
- Rapid assembly of carbon nanotube-based magnetic composites
- Creators
- Alina V Korobeinyk - School of Pharmacy and Biomolecular Sciences, University of Brighton, Lewes Road, Brighton, BN2 4GJ, United KingdomRaymond L.D Whitby - School of Pharmacy and Biomolecular Sciences, University of Brighton, Lewes Road, Brighton, BN2 4GJ, United KingdomJun Jie Niu - Materials Science and Engineering Department and A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAYury Gogotsi - Materials Science and Engineering Department and A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USASergey V Mikhalovsky - School of Pharmacy and Biomolecular Sciences, University of Brighton, Lewes Road, Brighton, BN2 4GJ, United Kingdom
- Publication Details
- Materials chemistry and physics, v 128(3), pp 514-518
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000292230800033
- Scopus ID
- 2-s2.0-79957899885
- Other Identifier
- 991014969771304721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary