Magnetic and conducting Fe_3O_4-polypyrrole nanoparticles with core-shell structure have been prepared in the presence of Fe_3O_4 magnetic fluid in aqueous solution containing dodecylbenzene sulfonic acid sodium salt (NaBS) as a surfactant and dopant.

• 在合成了同时具有导电性和磁性能的Fe3O4-聚吡咯纳米微球的基础上,使用了光电子能谱(XPS)、IR、UV、TGA等手段研究了纳米Fe3O4-聚吡咯之间的相互作用及作用机理。