Adsorption of HCOH and H₂S molecules on Al₁₂P₁₂ fullerene: a DFT study

In this study, we have investigated the adsorption and dissociation of four small gas molecules including HCOH, H₂S, NH₃, and O₂ on Al₁₂P₁₂ fullerene using density functional theory (DFT). The computations have been performed with B3LYP-D and M06-2X levels of theory and have been calculated with the 6-311++G** basis set. The adsorption of HCOH, H₂S, NH₃, and O₂ molecules can be attributed to the chemical and physical behavior of these molecules. The computational results show that the dissociation energies of HCOH and H₂S on the surface of Al₁₂P₁₂ fullerene were found more negative than those of their adsorption. On the contrary, the adsorption energies of O₂ and NH₃ on the surface of Al₁₂P₁₂ fullerene were found to be more negative than those of their dissociation. The results also indicate that the differences between calculated energies at both levels are negligible. The complex bonds between all molecules and Al₁₂P₁₂ fullerene have been formed due to the charge transfer that occurred during these interactions. According to the computations and the plots of total density of state (TDOS), the results indicate that Al₁₂P₁₂ fullerene is slightly sensitive toward HCOH and H₂S molecules.