Herein, we explored a category of three-dimensional (3D) NiCo2S4 nanospikes that have been integrated into a 1D Fe3C microarchitecture using a chemical surface transformation process. The...

Ultrafine γ-Fe (C), α-Fe (C) and Fe3C particles were prepared by arc-discharge synthesis in a methane atmosphere. The phases, morphology, structure and surface layer of the particles were studied by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) techniques and X-ray photoelectron spectroscopy (XPS).

2024年2月19日 · The elemental distributions and crystalline structures of Fe 3 C were detected by energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD), respectively (Supplementary Figs. S4...

Hierarchical nanocomposites of iron carbide (Fe3C) encaged in nitrogen-doped carbon (N–C) were prepared by using a simple carbothermal reduction of iron (II) oxalate (FeC2O4) nanowires in the...

To verify the crystalline structure of the synthesized Fe3C-CF, typical powder X-ray diffraction (XRD) patterns are shown in Figure 2 a. The three diffraction peaks at 2θ angles of around...

2022年6月15日 · Herein, a covalent-organic frameworks (COFs) based composite with FeN species and Fe/Fe 3C nanoparticles embedded in N-doped carbon nanosheets (Fe/Fe3 C@FeN-Cs) has been successfully synthesized by an in-situ reduction of pre-designed Fe-N 2 -O 2 units.

2022年2月17日 · In this study, the synthesis of uncontaminated, dispersible, single-crystal, stoichiometric iron carbide (Fe3C) nanoparticulate is pioneered successfully by using the flow-levitation (FL) method.

We demonstrate the complex phase transformations occurring in a transition-metal carbide (Fe3C, cementite) synthesis using in situ synchrotron X-ray diffraction. Our new study proves the existence of multiple intermediate phases and elucidates how oxide-nitride and nitride-carbide phase transformations can occur.

Fe3C is Upper Bainite-like structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Fe sites. In the first Fe site, Fe is bonded in a distorted bent 120 degrees geometry to two equivalent C atoms.

2023年3月1日 · XRD results showed that the pyrolysis temperature significantly affected the phase composition of MOF derived composites. Fe/Fe 3 C nanocrystals embedded in N-doped porous carbon hybrids could be easily prepared by heat …