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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 iron-nickel nanoparticles were synthesized by pyrolyzing the tetrapyridinoporphyrin iron-nickel mixture in a dual-temperature controlled chemical vapor deposition furnace. The mass ratio of tetrapyrido-porphyrin iron-nickel in the raw material was 7: 3. The results of scanning electron microscopy and transmission electron microscopy showed that the morphology of carbon-coated iron-nickel nanoparticles was uniform and the diameter was 100-300 nm. Iron-nickel nanoparticles are composed of iron, nickel and carbon; Raman spectroscopy proved that the product has a large number of defects, probably due to spherical structure caused by debris; In addition, magnetic properties tests show that at room temperature, carbon coated iron-nickel nano The particles have a very high saturation magnetization of 56.3 emu.g-1, while the coercive force of the product approaches zero and is superparamagnetic, which is suitable for the catalyst support.