Abstract
AbstractDensity functional theory (DFT) and time‐dependent density functional theory (TD‐DFT) calculations were performed in the solvent water for the study of the adsorption of the Ribavirin (RIB) on surfaces of the carbon nanotube (CNT) and graphene nanosheet (GNS). After the adsorption, the electronic properties of the CNT and GNS change. The adsorption energies are shown the strong adsorption in GNS/RIB (−0.816 eV) rather than CNT/RIB (0.544 eV). The dipole moment of CNT and GNS changes with the adsorption of the RIB from 0.00 to 4.57 and 7.05 Debye in CNT/RIB and GNS/RIB, respectively. The adsorption of the RIB molecule on CNT and GNS increases the value of λmax. The localized orbital locator and electron location function values for the CC bond confirm the stronger interaction between carbon atoms of GNS and RIB. Based on the results, it is suggested that GNS with a lower energy gap (3.03 eV) is a more suitable structure for adsorption of the RIB in comparison with the CNT (3.021).
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