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采用纳米微乳液法,以乙酰丙酮铁(Fe(acac)_3)、醋酸铑([Rh(OOCCH_3)_2]_2)为前驱体,1,2-十六烷二醇为还原剂,正辛醚为溶剂,三嵌段共聚物聚氧乙烯-聚氧丙烯-聚氧乙烯(PEO-PPO-PEO)为表面活性剂成功合成了双相可分散的RhFe3O4纳米复合粒子.傅立叶变换红外光谱仪(FT-IR)分析表明该纳米复合粒子表面存在两亲性PEO-PPO-PEO分子,X-射线衍射仪(XRD)分析表明纳米复合物中含有Rh和Fe_3O_4,透射电子显微镜(TEM)测试表明该纳米复合粒子基本呈球形或多面体形、粒径分布窄、结晶度高,振动样品磁强计(VSM)测试表明该纳米复合粒子在室温下显示软铁磁性.RhFe_3O_4纳米复合粒子在水和正己烷中的分散-聚集过程,表明其具有良好的双相分散性和磁操控性.兼具良好催化活性和磁性的RhFe_3O_4纳米复合粒子有望在催化、生物医药中有潜在的应用.
The nano-microemulsion method was used to synthesize ferrocene with Fe (acac) 3 and Rh (OOCCH 3) 2] 2 as precursors and 1,2-hexadecanediol as reductant. As a solvent, triblock copolymer polyethylene oxide-polyoxypropylene-polyoxyethylene (PEO-PPO-PEO) as surfactant successfully synthesized two-phase dispersible RhFe3O4 nanocomposite particles. Fourier transform infrared spectroscopy (FT- IR) showed that there were amphiphilic PEO-PPO-PEO molecules on the surface of the nanocomposite particles. X-ray diffraction (XRD) analysis showed that the nanocomposite contained Rh and Fe_3O_4. Transmission Electron Microscopy (TEM) The particles are basically spherical or polyhedral shape with narrow particle size distribution and high crystallinity. Vibrational sample magnetometer (VSM) test shows that the nanocomposite particles exhibit soft ferromagnetism at room temperature.RhFe_3O_4 nanocomposite particles in water and n-hexane Dispersion-aggregation process, indicating that it has a good dual-phase dispersion and magnetic controllability.Highly catalytic activity and magnetism of the RhFe_3O_4 nano-composite particles are expected to have potential applications in catalysis, biomedicine.