Additionally, the density of states results reveal that orbital hybridization takes place between above-mentioned molecules and Al-doped graphene sheet, whereas there is no hybridization between the molecules and the pristine graphene. Our calculated adsorption energies for the most stable position configurations of AC and AF on Al-doped graphene were −68.8 kJ mol−1(−52.6 kJ mol−1BSSE corrected energy) and −78.4 kJ mol−1(−64.3 kJ mol−1BSSE corrected energy) which are correspond to chemisorptions process respectively.These results point to the appropriateness of Al-doped graphene as a powerful adsorbent for practicalapplications