摘要
采用改进的Polyol合成法,以聚乙烯吡咯烷酮(PVP)为表面活性剂制备PVP包裹的单分散的Fe3O4/Au纳米粒子.透射电镜(TEM)和X射线衍射(XRD)分析证实了Fe3O4/Au的核壳型纳米结构,并确定了纳米粒子的尺寸大小和分布.UV-Vis测定显示了所制备的纳米粒子具有光学活性,而振动样品磁强计(VSM)测量显示纳米粒子具有优异的磁化率.
Polyvinylpyrrolidone(PVP)-coated monodispersed core-shell Fe3O4/Au magnetic-optic multifunctional nanoparticles were synthesized in the presence of PVP polymer as the surfactant by using a modified polyol process.The nanoparticles were investigated by means of TEM,XRD,VSM and UV-Vis.The formation of the core shell nanostructure was discussed.The size distribution of the nanoparticles was determined.The surface plasmon characteristic and magnetic properties of the Au nanoshell were evaluated.It was found that the titled nanoparticles had excellent magnetic susceptibility.
出处
《化学研究》
CAS
2009年第4期20-23,共4页
Chemical Research
基金
河南大学自然科学基金项目(07YBZR047)
河南省教育厅项目(2009A150004)
河南省科技厅项目(092102210004)