Synthesis of Gold Nanoparticles Using Lamellar Liquid Crystal of Protic Ionic Liquids

摘要

Gold spherical nanoparticles and nanoplatcs with triangular, pentagonal or hexagonal shapes arc synthesized by reduction of H[AuCl4] in lyotropic liquid crystal (LLC) mainly made of poly(ethylene oxide)-poly(propylene oxide)-poIy(ethylene oxide) block copolymers and protic ionic liquids (PILs) [PyrrJ[NO3]. Lyotropic liquid crystal was characterized by small-angle X-ray scattering measurements. Transmission electron microscopy and UV-VIS spectroscopy show the formation of spherical nanoparticles and nanoplates.