| 초록 |
Partially positively charged surface of silver nanoparticles has been considered to have interactions with olefin and can be active as an olefin carrier for facilitated transport. Herein, a correlation between the surface energy-level of silver nanoparticles and the olefin carrier activity is investigated. The surface energy-level shift of silver nanoparticles was possible due to the positive charge formation on their surface induced by tetracyanoquinodimethane (TCNQ), resulting in a high olefin carrier activity for facilitated transport and consequently a high selectivity for separation of propylene/propane mixtures. Silver nanoparticles were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM) and surface plasmon resonance peak of UV-Vis spectroscopy. In addition, the surface charge of the Ag NPs was investigated by X-ray photoelectron spectroscopy (XPS) and the surface energy-level was verified by Kelvin probe. |
