shows the Pore size distribution (PSDs) obtained by theNLDFT method for activated carbon prepared from reedy grassleaves at the activation temperature of 500◦C under N2atmospherefor 2 h of duration. The curve exhibits systematically a minimumaround 1 nm, which is well known to be an artifact introduced bymodeling assumptions [27]. The PSDs exhibit two maxima at 0.6and 1.1 nm, as well as another small shoulder at 2–4 nm, wherethe pore sizes become predominantly micro and mesoporous. Thepore size distribution shows a twin peak in the micropore region,contributing nearly to 50% of total pore volume.