碳包覆纳米铁镍磁性颗粒的合成(英文)  

Synthesis of Carbon Coated Nano Fe-Ni Magnetic Particles

作　　者：曹高翔[1] 付业伟[1] 孙慧慧[1] 许占位[1] 李贺军[1] 田松[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室碳/碳复合材料工程技术研究中心,西安710072

出　　处：《无机化学学报》2011年第7期1431-1435,共5页Chinese Journal of Inorganic Chemistry

基　　金：funded by the National Natural Science Foundation of China under Grant No.50832004;the Research Fund of State Key Laborat ory of Solidification Processing (NWPU),China(Grant No.25-TZ-2009);the Doctorate Foundation of Northwestern Polytechnical University~~

摘　　要：通过在双温控的化学气相沉积炉中热解四吡啶并卟啉铁镍混合物,合成了碳包覆铁镍纳米颗粒。原料中四吡啶并卟啉铁镍的质量比为7:3;扫描电镜和透射电镜的结果显示碳包覆铁镍纳米颗粒形貌均匀,直径为100～300 nm;能谱结果显示碳包覆铁镍纳米颗粒是由铁、镍和碳组成;拉曼光谱证明产物有大量的缺陷存在,可能是由于球状结构上的碎片引起的;此外,磁性能测试表明室温下,碳包覆铁镍纳米颗粒有很高的饱和磁化强度,为56.3 emu.g-1;而其产物的矫顽力趋近于零,呈超顺磁性,适合用于催化剂载体。Carbon coated nano Fe-Ni particles（C-FeNi-Ps） have been synthesized through pyrolysis of metal tetrapyrazinoporphyrazines（MPTpzs,M=Fe2＋,Ni2＋,mFePTpzs：mNiPTpzs=7：3） in a chemical vapor deposition furnace with two heating zones.The obtained C-FeNi-Ps show a uniform hair-bulb-like structure with diameter ranging from 100～300 nm;C-FeNi-Ps consist of C,Fe and Ni,and have lots of defects due to the edge planes on the ball structure,as supported by Raman spectrum.Besides,Hysteresis curve reveals that saturation magnetization（Ms） of C-FeNi-Ps is 56.3 emu·g-1,and magnetic hysteresis tends to be 0,indicating superparamagnetic property,suitable for using as catalyst-support particles.

关 键 词：碳包覆铁镍纳米颗粒 化学气相沉积 四吡啶并卟啉铁镍 磁滞曲线 

分 类 号：O614.811[理学—无机化学] O614.813[理学—化学]