Adsorption of N2, O2, CO, and CO2 on open ends and surface of single wall carbon nano-tubes: A computational nuclear magnetic resonance and nuclear quadrupole resonance study

d) The adsorption properties and NMR and NQR of zigzag (5, 0) and armchair (4, 4) SWCNTs with the optimal lengths of 7.1 Å and 8.6 Å, respectively, as a gas sensor and the optimized adsorption rates were calculated.