| 초록 |
Bis(2-ethylhexyl) sulfosuccinate (AOT), an anionic surfactant with twin alkyl chain tails, was employed to create aggregates as the porogen and metal precursor in electrospun polymer nanofiber matrices. AOT molecules dissolved in an organic solvent form robust reverse-micelle, and water can be solubilized in the polar core, forming a water pool characterized by the water-to-AOT molar ratio. In addition, an AOT molecule has a metal counterion stabilized by the sulfonated head group. Consequently, it was found that the AOT molecules formed self-assembled aggregates even in a solid matrix, allowing for the formation of metal nanoparticle-in-pore structures in the carbon nanofibers via heat treatment process. Notably, the use of AOT with iron counterion led to the creation of iron-in-pore substructures in the nanofibers (FeCNFs). The FeCNFs showed outstanding charge storage and water splitting performances. This strategy can be extended to combinations of various metal precursors for different target applications. |
