The bond lengths between the atoms on (ZnO) Polarization follows from a small rearrangement of charge when the oxygen atom of a water molecule is adsorbed on the 2Zn atom of the ZnO trimer. The partial positive charge on 2Zn is increased slightly while the magnitude of the negative charge of the adjacent 1O atom is increased. Exceptions are graphene and GO5 structure where the charge on 2Zn decreases, after water adsorption accompanied by a larger decrease in the negative charge of the 1O oxygen atom in GO5 than in other systems. This could be a reflection of the epoxy structure of GO5.Likewise the densities of state and band gaps provide information on how electron excitation of the (ZnO) 3 catalytic center is modulated by graphene and GO model substrates. Our calculations using the using B3LYP/DGDZVP2 level of DFT theory are displayed in Figure .