| 초록 |
The boron, used in the applications of ceramics and semiconductors, comes mostly from earth deposits at the moment, but the huge amount of aqueous boron (as the form of boric acid or borate ion) in seawater would be the final source in the future. The adsorption mechanism of aqueous boron is generally based on the dehydration with hydroxyl(-OH) ligands on the surface of adsorbent materials. We now present carbonized PAN(polyacrylonitrile) mats for the adsorbent of aqueous boron, prepared simply by electrospinning and subsequent carbonization. Carbonization under inert atmosphere would probably result in carbonized fibers with graphene-like surface, and the presence of nitrogen in PAN would provide sites for hydroxyl ligands in aqueous solution similarly as in N-doped graphene surface. A detailed XPS(X-ray photoelectron spectroscopy) analysis was employed for examining the adsorption behavior of aqueous boron on the surface of carbonized PAN mats. |
