Abstract

Nanoparticles of iron (α-Fe) and iron oxide (Fe₃O₄) with a core-shell structure (α-Fe core, Fe₃O₄ shell) covered with additional graphite-like carbon layer have been synthesized. The samples were obtained by solid-phase pyrolysis of iron phthalocyanine (FePc) at a pyrolysis temperature of 1000°C, followed by annealing in an oxygen atmosphere at a temperature of 250°C. The composition, structure and morphology of the samples were investigated by transmission and scanning transmission electron microscopy with elemental mapping, synchrotron X-ray diffraction and Raman spectroscopy.

中文翻译：

---

Fe-Fe3O4 纳米颗粒的合成与结构，其“核壳”结构包裹在类石墨碳基体中

摘要

已经合成了具有核壳结构（α-Fe 核，Fe ₃ O ₄壳）的铁（α-Fe）和氧化铁（Fe ₃ O ₄）纳米颗粒，覆盖有额外的类石墨碳层。通过在1000°C的热解温度下固相热解酞菁铁（FePc），然后在250°C的温度下在氧气气氛中退火获得样品。通过透射和扫描透射电子显微镜、元素映射、同步辐射X射线衍射和拉曼光谱研究了样品的组成、结构和形貌。