Soft X-ray absorption spectroscopy

Figure 4.3 Reprinted from Wear, Vol. 202, Z. Yin, M. Kasrai, M. Fuller, G.M. Bancroft, K. Fyfe and K.H. Tan, Application of soft X-ray absorption spectroscopy in chemical characterization of anti wear films generated by ZDDP the effect of physical parameters, Part I, pp. 172-191. Copyright 1997, with permission from Elsevier.

The local structure of aluminate in aqueous solution has been found by Radnai et al. to be a fourfold coordination structure, [Al(OH)4], using a solution X-ray diffraction method [5]. We have spectroscopically examined the dynamic change in the structural transition from aluminate to Al(OH)3 [6], which happens with the polymerization of aluminate due to the reduction of pH [7], using the in situ soft X-ray absorption spectroscopy we have developed [8,9]. The X-ray... 

Although the complex local structure of carbon materials cannot be easily or completely elucidated by conventional analysis methods, the high-resolution soft X-ray absorption spectroscopy and spectral analysis using the DV-Xa method are promising tools to analyze the local structure. In addition, comparative analysis of carbon materials with reference compounds that have been known their local and molecular structures is a valid approach for elucidating the local structure. 

Using Near-Edge Soft X-ray Absorption Spectroscopy To Study Organic Polymers and Metal—Polymer Interactions... 

Numerous spectroscopic techniques, such as x-ray photoelectron spectroscopy (XPS) [2], Auger electron spectroscopy (AES) [3], ultraviolet photoelectron spectroscopy (UPS), soft x-ray absorption spectroscopy (SXA) [4], high-resolution electron energy loss spectroscopy (HREELS) [5], and Fourier transform infrared... 

Genzer, J., Kramer, E.J., and Fischer, D.A., Acconnting for Anger yield energy loss for improved determination of molecnlar orientation nsing soft x-ray absorption spectroscopy, J. Appl. Phys. 92, 7070-7079, 2002. 

Another important, now commercially available, family of cathode material is Li[NiCo]02 compounds. The most important one is the Al-doped LiNio,8Coo.202 compound. These compounds also develop very rich surface chemistry. For example, the formation of surface films formed on LiNio,85Coo.i502 cathodes in lithium-ion cells was characterized using soft X-ray absorption spectroscopy (XAS) [60]. Surface LiF formation was clearly detected by surface studies of these electrodes. The surface reactivity increases and is accelerated as the temperature is higher [61]. 

APPLICATIONS OF SOFT X-RAY ABSORPTION SPECTROSCOPY FOR IN SITU STUDIES OF CATALYSTS AT NANOSCALE... 

Another interesting version of XAS suitable for active site studies is soft X-Ray absorption spectroscopy. The L edges of first-row transition metals often bear a considerable diagnostic potential for the identification of oxidation states and coordinations, which at present is largely disregarded in catalysis research. 

Choi HC, Jung YM, Noda 1, Kim SB (2003) A study of the mechanism of the electrochemical reaction of Utfaium with CoO by two-dimensional soft X-ray absorption spectroscopy (2D XAS), 2D Raman, and 2D heterospectral XAS-Ramtm correlation analysis. J Phys Chem B 107(24) 5806-5811. doi 10.1021/jp(B0438w... 

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