Controlled purification, solubilisation and cutting of carbon nanotubes using phosphomolybdic acid

Chompunuch Warakulwit; Jérome Majimel; Marie-Hélène Delville; Patrick Garrigue; Jumras Limtrakul; Alexander Kuhn

doi:10.1039/B805907A

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Journal of Materials Chemistry

Issue 34, 2008

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Controlled purification, solubilisation and cutting of carbon nanotubes using phosphomolybdic acid

Chompunuch Warakulwit , Jérome Majimel , Marie-Hélène Delville , Patrick Garrigue , Jumras Limtrakul and Alexander Kuhn

J. Mater. Chem., 2008, 18, 4056-4061

DOI: 10.1039/B805907A
Received 09 Apr 2008, Accepted 12 Jun 2008
First published on the web 24 Jul 2008

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We describe a straight forward procedure that allows an easy purification, an efficient solubilisation and, if desired, a controlled cutting of carbon nanotubes. The method uses aqueous solutions of phosphomolybdic acid combined with ultrasound, leading to the adsorption of phosphomolybdate on the nanotubes. This generates a negative surface charge allowing the formation of very stable suspensions. Prolonged exposure results in a controlled shortening of the tubes. Single- as well as multi-wall carbon nanotubes can be treated this way, which facilitates their further processing.

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Chompunuch Warakulwit
Jérome Majimel
Marie-Hélène Delville
Patrick Garrigue
Jumras Limtrakul
Alexander Kuhn

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Journal of Materials Chemistry

Controlled purification, solubilisation and cutting of carbon nanotubes using phosphomolybdic acid

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