Table 6 Adsorption energies for all studied complexes calculated at DFT/ωB97XD/6-311 + + g(d, p)/LANL2DZ computational method.

From: A DFT study for volatile gas adsorption of surface modifications of carbon based fullerenes through mono doping and co doping

Complex

Ecomplex

Esurface

Egas

EAds (Hartree)

EAds (eV)

Ni-Cu-C60@C6H6

− 5590.569155

− 5358.343986

− 232.228397

0.003228

0.0878

Ni-Fe-C60@C6H6

− 5213.759953

− 4981.477440

− 232.228397

− 0.05412

− 1.4726

Ni-Zn-C60@C6H6

− 5730.240291.

− 5497.904431

− 232.228397

− 0.10746

− 2.9242

Ni-Cu-C60@CH2O

− 5472.859979

− 5358.343986

− 114.502013

− 0.01398

− 0.3804

Ni-Fe-C60@CH2O

− 5096.034326

− 4981.477440

− 114.502013

− 0.05487

− 1.4932

Ni-Zn-C60@CH20

− 5612.469801

− 5497.904431

− 114.502013

− 0.06336

− 1.7240