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Functionalization of glassy carbon spheres by ball milling of aryl diazonium salts
被引:33
作者:
Pandurangappa, Malingappa
[1
]
Ramakrishnappa, Thippeswamy
[1
]
Compton, Richard G.
[2
]
机构:
[1] Bangalore Univ, Dept Studies Chem, Bangalore 560001, Karnataka, India
[2] Univ Oxford, Dept Chem, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England
来源:
关键词:
COVALENT MODIFICATION;
ACTIVATED CARBON;
NANOTUBES;
GRAPHITE;
WALL;
NANOSTRUCTURES;
CHEMISTRY;
POWDER;
ATMOSPHERE;
OXIDATION;
D O I:
10.1016/j.carbon.2009.03.068
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Solvent free derivatization has been achieved by a simple ball mill grinding procedure to functionalize glassy carbon spheres with anthraquinonyl and nitrophenyl groups using aryl diazonium salts. Grinding facilitates the mechanical activation of the carbon substrate material with the creation of active centres and may induce the decomposition of the diazonium salt. The functionalized glassy carbon spheres were characterized electrochemically by studying their cyclic voltammetry. These modified carbon spheres were also characterized by X-ray powder diffraction and Transmission electron microscopy to ascertain particle size reduction or change in surface morphology of the carbon spheres. The covalent attachment of these functional moieties to the surface of glassy carbon spheres were studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. (C) 2009 Elsevier Ltd. All rights reserved.
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页码:2186 / 2193
页数:8
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