In this work, the effect of adding manganese oxide towards polyacrylonitrile-based activated carbon nanofibers (ACNFs) was evaluated. The properties of PAN-based ACNFs/MnO 2 were analyzed by using scanning electron microscopy (SEM), BrunauerEmmett-Teller (BET), and Fourier transform infrared (FTIR). The sorption study of the electrospun ACNFs/MnO 2 in comparison to neat ACNFs and commercial granular AC towards lead (Pb) was also conducted. SEM micrograph analysis displays more compact nanofibers with dispersion of beads that were observed in the ACNF/MnO 2 with the diameter of 437.2 nm while aligned nanofibers with the diameter of 575.5 nm were observed in the neat ACNFs. The FTIR analysis showed the peak of Mn-O, which indicates the presence of MnO 2 in the ACNFs/MnO 2. In comparison to the neat ACNFs, surface area of the prepared ACNFs/MnO 2 is lower. It was found out that the removal of Pb(II) using ACNFs and ACNFs/MnO 2 is higher than commercial granular activated carbon with a removal rate of 100% at initial concentration of 3.5 ppm. The promising results of ACNFs/MnO 2 contributed by their satisfactory specific surface area and vast presence of surface functional groups.

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