Mn掺杂ZnO囊泡结构的制备

无机材料学报, 2009, 24(6): 1263-1266. doi: 10.3724/SP.J.1077.2009.09276

Mn掺杂ZnO囊泡结构的制备

李铮铮 ^1, , 张勇 ^2, , 陈之战 ^3, , 施尔畏 ^4,

1.中国科学院,上海硅酸盐研究所,上海,200050;中国科学院,研究生院,北京,100049

2.中国科学院,上海硅酸盐研究所,上海,200050;中国科学院,研究生院,北京,100049

3.中国科学院,上海硅酸盐研究所,上海,200050

4.中国科学院,上海硅酸盐研究所,上海,200050

基金项目: 国家自然科学基金(50702071;50772122)

关键词：纳米结构 , Mn掺杂 , 氧化物 , 磁性材料

Synthesis of Multi-shelled Mn-doped ZnO Hollow Spheres

Keywords： nanostructures , doping , oxides , magnetic materials

通过两步或三步法分别制备两层或三层结构的碳球模板,在溶液中的Zn离子和Mn离子在模板上吸附后再进行煅烧.TEM及SEM显示,煅烧后得到完全复制碳膜板结构的多层Mn掺杂ZnO囊泡.EDS显示Mn在ZnO中的掺杂含量约为1%.样品具有室温铁磁性,饱和磁化率(M_s)及矫顽磁场(H_c)分别为0.032A·m~2/kg及0.781kA/m.这种Mn掺杂ZnO纳米囊泡结构使新奇的囊泡结构和ZnO的磁性性能得到了完美的结合.

A simple synthesis method of multi-shelled magnetic Mn-doped ZnO hollow nanospheres were developed with the assistance of carbon templates. The multi-spheres carbon templates were prepared with two- or three- synthetic steps. The Zn and Mn metal ions in the solution were absorbed onto the functional surface layer of carbon templates. The TEM and SEM images show single-, double-, and triple-shelled hollow spheres are obtained after calcination, and EDS spectrum shows the concentration of Mn is estimated to be 1%. The hollow nanospheres also have outstanding room temperature ferromagnetism magnetic properties. The saturation magnetization (M_s) is 0.032A·m~2/kg, and the coercive field (H_c) is 0.781kA/m, respectively.

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