ZnS/Fe_3O_4复合纳米粒子的制备及表征  

Preparation and characterizition of ZnS/Fe_3O_4 nanoparticles

作　　者：李振[1] 张德文[1] 刘英博[1] 周迪[1] 张元[1] 

机构地区：[1]长春工业大学化学与生命科学学院,吉林长春130012

出　　处：《磁性材料及器件》2012年第4期35-38,57,共5页Journal of Magnetic Materials and Devices

摘　　要：采用两步共沉淀法合成了ZnS/Fe3O4纳米复合物。XRD分析表明,样品为ZnS/Fe3O4纳米复合物。透射电镜分析表明,纳米复合物的平均粒径在10nm左右,这与XRD分析结合谢乐公式估算的结果基本吻合。紫外吸收光谱检测表明,ZnS/Fe3O4纳米复合物的紫外吸收峰发生轻微的蓝移。320nm激发波长的光致发光研究表明合成的ZnS/Fe3O4纳米复合物具备一定的荧光发光能力,且复合物的发光强度可随ZnS量子点的浓度进行调整。振动样品磁强计(VSM)分析结果表明,ZnS/Fe3O4纳米复合物具有超顺磁性,ZnS浓度提高,复合物的饱和磁化强度下降。ZnS/Fe3O4 nanocomposites were synthesized by two-step co-precipitation. The XRD analysis demonstrated that the samples are ZnS/Fe3O4 nanocomposites. The TEM analysis showed that the average size of the nanoparticles is about 10nm which agrees with the estimated results of XRD analysis and the Scherrer formula. The UV-vis analysis for ZnSfFe3O4 nanocomposites indicated that the absorption peak exhibits small blue shift. The nanocomposites have photoluminescence emission under the excitation at 320nm and the photoluminescence intensity can be enhanced by increasing the molar ratio of ZnS. The results of VSM analysis demonstrated that the as-synthesized products have The saturation magnetization decreases with increasing molar ratio of ZnS

关 键 词：FE3O4 ZNS 纳米复合物 荧光 磁性 

分 类 号：TB383[一般工业技术—材料科学与工程] TB33