简介：Activatedcarbon(AC)wasfabricatedfromcorncob,whichischeapandabundant.Experimentalparameterssuchasparticlesizeofcorncob,KOH/charweightratio,andactivationtemperatureandtimewereoptimizedtogenerateAC,whichshowshighmethanesorptioncapacity.AChashighspecificsurfacearea(3227m2/g),withporevolumeandporesizedistributionequalto1.829cm3/gandca.1.7-2.2nm,respectively.Undertheconditionof2℃andlessthan7.8MPa,methanesorptioninthepresenceofwater(Rw=1.4)wasashighas43.7wt%methaneperunitmassofdryAC.Theresultissignificantlyhigherthanthoseofcoconut-derivedAC(32wt%)andorderedmesoporouscarbon(41.2wt%,Rw=4.07)underthesamecondition.ThephysicalpropertiesandamorphouschaoticstructureofACwerecharacterizedbyN2adsorptionisotherms,XRD,SEMandHRTEM.Hence,thecorncob-derivedACcanbeconsideredasacompetitivemethane-storagematerialforvehicles,whicharerunbynaturalgas.