TY - JOUR ID - 104947 TI - Selective Adsorption Function of B16C16 Nano-Cage for H2O, CO, CH4 and NO2 JO - Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry JA - AJCB LA - en SN - AU - Ariaei, Shaghayegh AU - Basiri, Hossein AU - Ramezani, Mojtaba AD - Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran AD - Young Researchers and Elite Club, Touyserkan Branch, Islamic Azad University, Touyserkan, Iran AD - Department of Chemical Engineering, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran Y1 - 2020 PY - 2020 VL - 2 IS - 1 SP - 18 EP - 25 KW - Ab initio KW - Adsorption KW - Boron carbide KW - Sensors KW - Charge transfer DO - 10.33945/SAMI/AJCB.2020.1.4 N2 - The interactions between boron carbide (BC) nanocluster of B16C16 and H2O, NO2, CO, and CH4 small molecules were investigated by using density functional theory (DFT) computations to exploit the structural and electronic properties of the adsorbate/cluster complexes. The calculated adsorption energies of the most stable states are -16.6, -0.17, -1.28, -0.18 eV for NO2, CO, H2O, and CH4 molecules, respectively. Meanwhile, the interactions between CO and CH4 molecules and the cluster induce dramatic changes to the cluster electronic properties so that the molecular orbital (HOMO/LUMO) gap of cluster decreased its original value. It was shown that the phenomenon leads to an increment in the electrical conductivity of the cluster at a definite temperature. Furthermore, it is revealed that the adsorptions of NO2 and H2O molecules have no significant effects on the electronic properties of the cluster. Thus, this work suggests that the investigated B16C16 nano-cage could work as a selective gas sensor device towards CO, CH4, NO2 and H2O molecules. UR - https://www.ajchem-b.com/article_104947.html L1 - https://www.ajchem-b.com/article_104947_24149c5bd2eb7adf299489052c360db5.pdf ER -