CAJ | 학술논문

采用直流电弧放电法制备了具有复合壳层和较好核-壳结构的碳包覆铁纳米颗粒（CEINPs）。高分辨透射电镜、能量色散 X-射线及其线扫描、X-射线粉末衍射、X-射线光电子能谱的表征结果表明，CEINPs 的壳层主要由最里面的非石墨层、中间的不完整石墨层和最外面的无定形碳结构组成，包含了 C、Fe、O 3种元素；CEINPs 的平均直径为17.4 nm。热分析测量结果表明，CEINPs 在空气中的稳定温度达到了260℃；产物 B 中的 Fe 含量为79.5％（质量分数），饱和磁化强度和矫顽力分别为109.3 emu·g-1和167 Oe。对复合壳层的形成机理进行了简单的讨论。
채용직류전호방전법제비료구유복합각층화교호핵-각결구적탄포복철납미과립（CEINPs）。고분변투사전경、능량색산 X-사선급기선소묘、X-사선분말연사、X-사선광전자능보적표정결과표명，CEINPs 적각층주요유최리면적비석묵층、중간적불완정석묵층화최외면적무정형탄결구조성，포함료 C、Fe、O 3충원소；CEINPs 적평균직경위17.4 nm。열분석측량결과표명，CEINPs 재공기중적은정온도체도료260℃；산물 B 중적 Fe 함량위79.5％（질량분수），포화자화강도화교완력분별위109.3 emu·g-1화167 Oe。대복합각층적형성궤리진행료간단적토론。
Carbon encapsulated iron nanoparticles(CEINPs)with composite shells and good core-shell struc-ture have been prepared by DC arc discharge.The results of high resolution transmission electron microscope (HRTEM),energy dispersive X-ray(EDX)and its line scanning,X-ray diffraction(XRD),and X-ray photoelec-tron spectroscopy(XPS)characterizations on the product B show that the shells of CEINPs are mainly com-posed of the innermost non-graphite,middle incomplete graphite,and outermost disordered carbon structures, containing C,Fe and O elements.It is known from thermogravimetric-differential scanning calorimetry(TG-DSC)measurement that the CEINPs are stable in air below 260 ℃ and the total content of Fe element in the product B is 79.5%.The saturation magnetization(M s )and coercivity(H c )of the product B are 109.3 emu· g-1 and 167 Oe,respectively.The formation mechanism of the composite shells is briefly discussed.