The conventional approach to functionalization of raw carbon nanotubes (CNTs) is via some form of acid treatment, which typically leads to over-functionalization and unwanted oxidation products. A majority of the functionalization schemes use acid treatment as a first step to introduce covalently bonded carboxylic functional groups on CNTs, which then can be further functionalized to amine, ester, amide, polymeric, or other groups. Dilute base-washing has been shown to remove oxidation debris by converting the acidic groups to their dissolvable conjugate salts. In this work we present the effect of advanced purification such as base-washing for the purification of microwave induced carboxylated carbon nanotubes. The effect on solubility, colloidal stability and surface functionalities are presented.

Microwave induced funtionalization and purification of carbon nanotubes

247th National Meeting (2014)

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