
Fitting EXAFS Fe2O3 sample and model from Fe K-edge spectrum
To study and fabricate Fe2O3 materials based on the experimental methods [40,41], there are the following methods: X-ray diffraction (XRD), Extended X-ray Absorption Fine Structure (EXAFS)...
2020年5月21日 · EXAFS data analysis, respectively. In this paper, we reported the structure characteristic of Fe 2 O 3 which was synthesized from a local iron stone mineral. The characterization includes XRD for phase identification and lattice parameter determination and XANES and EXAFS to analyze the electronic and local structure. In addition, we
Iron Oxide with Different Crystal Phases (α- and γ-Fe2O3) in ...
2015年12月5日 · Furthermore, an extended X-ray absorption fine structure (EXAFS) technique was applied to characterize the difference of local structural environment of the adsorbed Pb(II) on the surface of α- and γ-Fe 2 O 3.
Pt/Fe2O3 with Pt–Fe pair sites as a catalyst for oxygen ... - Nature
2021年5月20日 · Here we load platinum onto α-Fe 2 O 3 to construct a highly active and stable catalyst with dispersed Pt–Fe pair sites. We propose that the Pt–Fe pair sites have partially occupied orbitals...
Bondlength alternation of nanoparticles Fe2O3 coated with …
1999年11月1日 · To investigate the role of surfactants, the x-ray absorption spectra were measured for the solution-form samples and the atomic local structure around Fe atoms was investigated through extended x-ray absorption structure (EXAFS) analysis.
Chemical Structure and Magnetism of FeOx/Fe2O3 Interface …
2020年8月14日 · The chemical and magnetic states of Fe/Fe 2 O 3 thin films prepared by e-beam evaporation were investigated by using element-specific techniques, X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD).
ACS Nano:纳米氧化铁负极容量负衰减的起源 - 知乎
其中,Fe2O3具有价格低廉、毒性低、理论容量高(1005 mAh g-1)、生态友好等特点。 然而,氧化铁基负极材料的主要问题之一是锂化和脱锂时体积膨胀大,导致循环性能差。 解决上述问题的最佳策略是设计多孔和中空纳米结构的Fe2O3基负极材料。 但 纳米氧化铁 负极经常发生异常容量波动,容量最初逐渐下降,然后在循环过程中增加,这种现象被称为“ 负衰减 ”。 然而,负衰减的详细机制仍不清楚。 【工作简介】 近日, 韩国成均馆大学的Ji Man Kim和Won-Sub Yoon 等 …
Local structure examination of mineral-derived Fe2O3 powder by …
2018年5月1日 · Fe K-edge XANES (X-ray Absorption Near Edge Structure) and EXAFS (Extended X-ray Absorption Fine Structure) spectra have been used to investigate the local structures of hematite (Fe 2 O 3) powders which were synthesized from local iron stone.
Homogeneous solid-solution formation in Fe2O3–Al2O3 system …
2023年7月15日 · We have characterized the mechanically alloyed (Fe 2 O 3) 1-x (Al 2 O 3) x solid solution with corundum-type structure by means of TEM, EXAFS, and Mössbauer spectroscopy emphasizing the homogeneity of cation distribution and …
Kinetics of the catalytic oxidation of toluene over Mn,Cu co-doped ...
2023年10月1日 · Hence, EXAFS can provide more accurate differences in the structure before and after the catalytic reaction (Zhao et al., 2015). In this study, we synthesized Mn,Cu co-doped Fe 2 O 3 (hereafter denoted as Mn,Cu-Fe 2 O 3 ), calcined at 400 °C for toluene oxidation in a continuous fixed-bed reactor.
- 某些结果已被删除