Growth of calcium carbonate on non-covalently modified carbon nanotubes

The crystallization of calcium carbonate was investigated on pristine and non-covalently modified carbon nanotubes (CNTs) using the vapor diffusion technique in a calcium chloride solution. Non-covalent modification was accomplished by treating the carbon nanostructures with the amphiphilic copolyme...

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Bibliographic Details
Published in:Materials letters 2007-11, Vol.61 (28), p.5044-5046
Main Authors: Tasis, Dimitrios, Pispas, Stergios, Galiotis, Costas, Bouropoulos, Nikolaos
Format: Article
Language:English
Subjects:
Amphiphilic block copolymers
Calcium carbonate
Carbon nanotubes
Crystal growth
Crystal morphology
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Summary:The crystallization of calcium carbonate was investigated on pristine and non-covalently modified carbon nanotubes (CNTs) using the vapor diffusion technique in a calcium chloride solution. Non-covalent modification was accomplished by treating the carbon nanostructures with the amphiphilic copolymer poly(isoprene- b-acrylic acid). Calcium carbonate crystals grown on the surface and in the interstitial channels of CNT buckypapers were observed in both cases. Scanning electron microscopy analysis of the untreated CNTs showed the characteristic rhombohedral morphology of calcite crystals, while in the case of modified material spherical and ellipsoidal crystals, consisted of nanocrystallites, were observed. X-ray diffraction analysis showed the presence of calcite crystals in both cases.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2007.03.101