硬模板法合成钴铁氧体微米磁管及磁性纳米粒子  

Synthesis of micron-tube and nanoparticles of Co/Fe spinel ferrite in hard template method

作　　者：徐庆红[1] 纪雪梅[1] 马吉山[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029

出　　处：《功能材料》2009年第1期13-16,19,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50602004);高等学校学科创新引智计划资助项目(B07004)

摘　　要：以优质纸纤维和脱脂爆化玉米为硬模板,采用共沉淀法在硬模板表面合成Co2+Fe2+Fe3+-LDHs。然后程序升温在马弗炉中焙烧去除有机成分,得到钴铁氧体微米磁管和纳米钴铁氧体粒子。通过对合成产物进行X射线衍射、扫描电镜、磁强、莫斯堡尔谱等表征表明,合成的管状铁氧体具有和粉末铁氧体相似的磁性和良好的晶体组成;同时发现,所合成的两种形貌钴铁氧体对甲基橙均具有较好的光降解性能。Co^2＋ Fe^2＋ Fe^3＋-LDHs were synthesized in using co-precipitate method on fiber and degreased poppedcorn. Some micron-tubes and nanopartieles of Co/Fe spinel ferrite were obtained by temperature programming. The micron-tubes and nanoparticles were characterized by XRD, FT-IR, TG-DTA, SEM, Mossbauer spectrosco- py. It indicates that the micron-tubes and nanoparticle have the similar phases and magnetism as the powder spinel has. At the same time, the synthesized materials exhibit good photocatalytic activities to degradation of methyl orange under UV-vis-light irradiation.

关 键 词：水滑石 硬模板法 铁氧体 光降解 

分 类 号：TG174.444[金属学及工艺—金属表面处理]