relation: https://khub.utp.edu.my/scholars/4441/ title: Influence of acid and thermal treatments on properties of carbon nanotubes creator: Akbarzadeh, O. creator: Mohd Zabidi, N.A. creator: Abdullah, B. creator: Subbarao, D. description: 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 morphological changes of the MWCNTs. The acid and thermal treatments also increased the BET surface areas and pore volumes of the MWCNTs. © (2014) Trans Tech Publications, Switzerland. date: 2014 type: Article type: PeerReviewed identifier: Akbarzadeh, O. and Mohd Zabidi, N.A. and Abdullah, B. and Subbarao, D. (2014) Influence of acid and thermal treatments on properties of carbon nanotubes. Advanced Materials Research, 832. pp. 394-398. ISSN 10226680 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84891610215&doi=10.4028%2fwww.scientific.net%2fAMR.832.394&partnerID=40&md5=6d1b78db67272bc185c10a0e21f98dcb relation: 10.4028/www.scientific.net/AMR.832.394 identifier: 10.4028/www.scientific.net/AMR.832.394