| 초록 |
Noble metal nanoparticles such as gold, platinum, and palladium are often immobilized onto various substrates for effective use as a catalyst in organic reactions. In this study, platinum (Pt) nanoparticles were immobilized onto cross-linked melamine-formaldehyde (MF) microspheres and their catalytic activities for two different organic reactions, reduction of 4-nitrophenol to 4-aminophenol and oxidation of 1-phenylethanol to acetophenone, were investigated. The MF microspheres were synthesized by dispersion polycondensation reaction of melamine and formaldehyde in aqueous media. The immobilization of Pt nanoparticles onto the surface of MF microspheres was performed by immersion them in aqueous H2PtCl6 solution to induce the complexation of Pt cation with amino group of MF particles and a subsequent reducing it with NaBH4. The Pt nanoparticle decorated MF microspheres were characterized by FE-TEM, SEM, FT-IR, and XRD. The Pt/MF hybrid microspheres exhibited good catalytic activities for the two organic reactions, which were confirmed by UV-Vis spectroscopy and GC-MS, respectively. |
