摘要
采用溶胶凝胶法制备了BaNdxFe12-xO19,并用化学氧化法制备了聚苯胺-BaNdxFe12-xO19复合物。对制备的聚苯胺-BaNdxFe12-xO19复合物通过XRD、红外光谱和透射电镜等进行了表征,通过测定产物在磁性条件下的沉淀时间对其磁性进行了初步研究。结果显示:BaNdxFe12-xO19为磁铅石型铁氧体,钕掺杂钡铁氧体的磁性良好,聚苯胺/BaNdxFe12-xO19包裹良好,整个粒子呈核-壳结构,直径在55 nm左右。经复合后,产物沉淀时间增长,磁力降低,在微量掺杂范围内聚苯胺复合物的最佳掺杂比为0.2。
BaNdxFe12-xO19 and polyaniline-BaNdxFe12-xO19 compounds were prepared by the sol-gel method and the chemical oxidation method, respectively. They were characterized by XRD, infrared spectroscopy and transmission electron microscopy. Their magnetic properties were preliminarily studied by the precipitation time. The results showed that BaNdxFe12-xO19 was magnetoplumbite ferrite and was wrapped well by polyaniline. BaNdxFe12-xO19 polyaniline composites presented the core-shell structure with 55 nm in diameter. In addition, the magnetism of composites decreased with the precipitation time increase. The optimal Nd-doped amount was x=0.2.
基金
国家自然科学基金(20904019)
航空科学基金(2008ZF56017
2011ZF56015)
江西省青年科学家培养对象计划(20112BCB23017)
中国科学院光化学转换与功能材料重点实验室开放课题(PCOM201028
PCOM201130)
江西省教育厅科技项目(GJJ11501)
