Influence of Acid and Thermal Treatments on Properties of Carbon Nanotubes

Abstract:

The application of carbon nanotubes as a catalyst support has received considerable attention recently. The influence of acid and thermal treatments on the properties of multi-walled carbon nanotubes (MWCNTs) is presented in this paper. MWCNTs were treated with 65 wt% HNO₃ at the 120 °C for 14 h in order to open the caps and introduce functional groups on the MWCNTs. Then thermal treatment was carried out at 600, 700, 800, 900 °C for 3 h in flowing Ar gas in a tubular furnace. The MWCNTs were characterized by N₂- adsorption, FESEM and Raman spectroscopy. The thermal treatment resulted in slight morphological changes of the MWCNTs. The acid and thermal treatments also increased the BET surface areas and pore volumes of the MWCNTs.

• Periodical: Advanced Materials Research (Volume 832)
• Pages: 394-398
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.832.394
• Online since: November 2013
• Authors: Omid Akbarzadeh, Noor Asmawati Mohd Zabidi, Bawadi Abdullah, Duvvuri Subbarao
• Keywords: Acid Treatment, Carbon Nanotube (CN), Morphological, Thermal Treatment

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