Carbon letters

  • Volume 24
  • /
  • Pages.82-89
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  • 2017
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  • 1976-4251(pISSN)
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  • 2233-4998(eISSN)
Korean Carbon Society (한국탄소학회)
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Physicochemical properties and methane adsorption performance of activated carbon nanofibers with different types of metal oxides

  • Othman, Faten Ermala Che (Advanced Membrane Technology Research Center (AMTEC), Faculty of Chemical & Energy Engineering, Universiti Teknologi Malaysia) ;
  • Yusof, Norhaniza (Advanced Membrane Technology Research Center (AMTEC), Faculty of Chemical & Energy Engineering, Universiti Teknologi Malaysia) ;
  • Hasbullah, Hasrinah (Advanced Membrane Technology Research Center (AMTEC), Faculty of Chemical & Energy Engineering, Universiti Teknologi Malaysia) ;
  • Jaafar, Juhana (Advanced Membrane Technology Research Center (AMTEC), Faculty of Chemical & Energy Engineering, Universiti Teknologi Malaysia) ;
  • Ismail, Ahmad Fauzi (Advanced Membrane Technology Research Center (AMTEC), Faculty of Chemical & Energy Engineering, Universiti Teknologi Malaysia) ;
  • Nasri, Noor Shawal (UTM-MPRC of Oil and Gas Institute, Faculty of Chemical & Energy Engineering, Universiti Teknologi Malaysia)
  • Received : 2017.05.08
  • Accepted : 2017.08.24
  • Published : 2017.10.31
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Abstract

In this study, composite PAN-based ACNFs embedded with MgO and $MnO_2$ were prepared by the electrospinning method. The resultant pristine ACNFs, ACNF/MgO and $ACNF/MnO_2$ were characterized in terms of their morphological changes, SSA, crystallinity and functional group with FESEM-EDX, the BET method, XRD and FTIR analysis, respectively. Results from this study showed that the SSA of the ACNF/MgO composite ($1893m^2g^{-1}$) is significantly higher than that of the pristine ACNFs and $ACNF/MnO_2$ which is 478 and $430m^2g^{-1}$, respectively. FTIR analysis showed peaks of 476 and $547cm^{-1}$, indicating the presence of MgO and $MnO_2$, respectively. The FESEM micrographs analysis showed a smooth but coarser structure in all the ACNFs. Meanwhile, the ACNF/MgO has the smallest fiber diameter ($314.38{\pm}62.42nm$) compared to other ACNFs. The presence of MgO and $MnO_2$ inside the ACNFs was also confirmed with EDX analysis as well as XRD. The adsorption capacities of each ACNF toward $CH_4$ were tested with the volumetric adsorption method in which the ACNF/MgO exhibited the highest $CH_4$ adsorption up to $2.39mmol\;g^{-1}$. Meanwhile, all the ACNF samples followed the pseudo-second order kinetic model with a $R^2$ up to 0.9996.

Keywords

References

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