TY - JOUR
T1 - Rapid assembly of carbon nanotube-based magnetic composites
AU - Korobeinyk, Alina V.
AU - Whitby, Raymond L D
AU - Niu, Jun Jie
AU - Gogotsi, Yury
AU - Mikhalovsky, Sergey V.
N1 - Funding Information:
The authors acknowledge the RCUK Academic Fellowship (RW) and Dr. Martin Smith from University of Brighton. A.K. acknowledges support of her PhD studentship by the University of Brighton. Y.G. was supported by NSF grant DMR-0945230 .
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/8/15
Y1 - 2011/8/15
N2 - 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.
AB - 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.
KW - 3-Aminopropyltriethoxysilane (APTES)
KW - Carbon nanotubes (CNTs)
KW - Magnetic nanoparticles
KW - α-Haematite
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U2 - 10.1016/j.matchemphys.2011.03.038
DO - 10.1016/j.matchemphys.2011.03.038
M3 - Article
AN - SCOPUS:79957899885
VL - 128
SP - 514
EP - 518
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
IS - 3
ER -