纳米FeCo, FeCo@SiO2粒子的合成及其物理化学研究

Izvestiâ Sankt-Peterburgskogo gosudarstvennogo tehnologičeskogo instituta (tehničeskogo universiteta) Pub Date : 2023-01-01 DOI:10.36807/1998-9849-2023-66-92-6-10

Alexander N. Kudlash, Mariya Yu. Slayek, Svetlana A. Vorobyova

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引用次数: 0

摘要

采用Co(II)和Fe(II)盐在溶液中的化学还原法制备了FeCo和FeCo@SiO2双金属纳米复合粒子。采用透射电镜、扫描电镜、粉末XRD、x射线荧光和复热分析等方法研究了纳米复合材料的粒径、形貌和组成。结果表明，合成的粉末由平均尺寸为4 ~ 35 nm的球形颗粒组成，这些颗粒聚集成链状或更复杂的非晶态结构。结果表明，在惰性气氛中煅烧样品可以使FeCo合金的晶相固定。

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SYNTHESIS OF NANOSIZED FeCo, FeCo@SiO2 PARTICLES AND THEIR PHYSICAL CHEMICAL INVESTIGATION

Bimetallic nanocomposite particles of FeCo and FeCo@SiO2 were prepared by chemical reduction of Co(II) and Fe(II) salts in solutions. The particle size, morphology and composition of the nanocomposites were studied by transmission and scanning electron microscopy, powder XRD, X-ray fluorescence and complex thermal analysis. It was established that the synthesized powders consist of spherical particles with an average size of 4 to 35 nm, which are aggregated into chains or more complex amorphous structures. It was shown that the calcination of samples in an inert atmosphere makes it possible to fix the crystalline phase of the FeCo alloy.

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Izvestiâ Sankt-Peterburgskogo gosudarstvennogo tehnologičeskogo instituta (tehničeskogo universiteta)

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