Yaşar, S.Hosseinian, A.Ebadi, A.Ahmadi, S.Ebrahimiasl, S.Kumar, A.2025-05-102025-05-1020211040-040010.1007/s11224-021-01771-52-s2.0-85103919083https://doi.org/10.1007/s11224-021-01771-5https://hdl.handle.net/20.500.14720/5625Density functional theory calculations were performed to inspect the potential application of pristine AlN nanotube (AlNNT) as well as Pd-decorated AlNNT (Pd@AlNNT) in recognition of gabapentin (GB) drug. The sensing response of AlNNT to the GB drug is very small (~ 5.2 at 298 K) attributed to the small adsorption energy (AE) of −0.16 eV. Molecular orbital energy decomposition method (EDA) showed that the contributions of electrostatic attraction, Pauli repulsion, orbital relations, and dispersion forces in the AE are about −0.21, 0.19, −0.11, and −0.09 eV, respectively. A Pd atom preferentially adsorbed over an Al–N bond of the AlNNT, releasing the energy of 2.93 eV. We found that the GB strongly adsorbed on the Pd@AlNNT with AE of −1.29 eV and the sensing response increased to 524.6 by the Pd decoration. Based on the results, the main stabilization contribution to the AE of GB on the Pd@AlNNT comes from the electrostatic attraction based on the EDA analysis. The recovery time was achieved to be 1.8 s for the GB desorption from the Pd@AlNNT surface. Finally, we concluded that the Pd@AlNNT can transform the presence of GB molecules into electrical signal, and it may potentially be applied as an electronic sensor for GB drug detection. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.eninfo:eu-repo/semantics/closedAccessAlnComputational StudyElectronic PropertiesSensorRetracted325Q3Q319611971