A highly reactive precursor in the iron sulfide system
2018年8月7日 · Here we report the synthesis and structure of a nanoparticulate phase (FeS nano) that is a necessary solid-phase precursor to the conventionally assumed initial precipitate in the iron sulfide...
Analysis of XPS spectra of Fe - ScienceDirect
2008年2月15日 · The XPS spectra of Fe 3p for Fe 3 O 4, and Fe 0.94 O are analysed using the Fe 3+ and Fe 2+ peak parameters obtained from Fe 2 O 3 and 2FeO·SiO 2. The results of the analyses show that the Fe 2+ /Fe 3+ atomic ratio in stoichiometric Fe 3 O 4 is accurately predicted within experimental uncertainty.
关于过渡金属元素的XPS图谱疑问解答 - 知乎 - 知乎专栏
xps，即x射线光电子能谱。原理简单来说是将x射线光子入射到样品上，将样品的光电子和俄歇电子激发出来。 在阅读文献中，经常可以看到xps图谱，用来分析样品表面元素的价态变化、成分和分子结构 下面以一个图来举例…
铁 | Thermo Fisher Scientific - CN
对于暴露在空气中的白铁矿 (FeS 2)，由于 Fe 2+ 处于低自旋组态，因此未观察到卫星峰。 主 Fe2p 3/2 峰的较高结合能 (~710.5eV) 的宽结构不是卫星结构，而是由于表面氧化产生的 Fe 3+ 态所致。
Iron | XPS Periodic Table | Thermo Fisher Scientific - US
Iron X-ray photoelectron spectra, iron electron configuration, and other elemental information. Experimental information. Fe2p overlaps strongly with Ni LMM Auger peaks, e.g., in some steel samples. Can use weaker Fe3p or Fe3s peaks instead for quantification. Some compounds/alloys of iron are magnetic. Degauss samples if possible before analysis.
Iron Spectra – Fe metal – The International XPS Database 1
The XPS Spectra section provides raw and processed survey spectra, chemical state spectra, BE values, FWHM values, and overlays of key spectra. Atom% values from surveys are based on sample, as received, and Scofield cross-sections. Atom% values are corrected for IMFP and PE. Peak-fits are guides for practical, real-world applications.
XPS and structural studies of Fe - Nature
2021年12月30日 · In this research, due to the advantages of natural asphalt, such as high activity, high surface area, low toxicity and specific features of natural asphalt, Fe 3 O 4 -PTMS-NAS@Cu as a new...
Figure 4. XPS spectra of the FeS surface at pH 8, 14 days. (A) Fe …
These XPS results are consistent with oxidation of mackinawite Fe (II) S surface species to Fe (III) O in the form of ferrihydrite or an amorphous iron (III) (hydr)oxide (eqs 5 and 6). ......
Use of XPS in the determination of chemical environment and …
2000年10月2日 · Among these techniques, XPS is suitable in identifying oxidation products formed onto a pyrite surface and, in particular, to precisely determine the oxidation state and chemical environment of S and Fe. Most of the numerous XPS studies on pyrite oxidative dissolution is difficult to exploit because of a serious lack of homogeneity in the ...
XPS of (a) Fe 2p and (b) S 2p of FeS 2 thin films sulfurized at ...
XPS of FeS 2 films showed that the Fe 2p spectrum of pyrite has two major peaks at 707 eV (assigned as Fe 2p3/2) and 720 eV (assigned as Fe 2p1/2), which illustrates the Fe 2+ bulk peak...