Carbon-based compounds are the basis for all living systems and comprise the structure of fossil fuels in the form of hydrocarbons. Several carbon isotopes are important. The International Union of Pure and Applied Chemistry designated the isotope C-12 as the basis for atomic weights, whil...
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XPS spectra are, for the most part, quantified in terms of peak intensities and peak positions. The peak intensities measure how much of a material is at the surface, while the peak positions indicate the elemental and chemical composition. Other values, such as the full width at half ...
The "E Tougaard" or "E" background type is such a simplification, where the loss functional form is a Gaussian. The parameters in the cross-section list are the Gaussian height, full-width-half-maximum, exponential tail parameter and an offset to the Gaussian. The exponential tail is ...
The precursors used were molybdenum, bismuth, indium, triethanolamine in complex form and sodium selenosulphite as a source of Mo4+, Bi3+, In3+ and Se2 along with organic additives, respectively. The...doi:10.1139/v11-107S. M. Patil...
Full size image Consistency and symmetry checks of our analyses are also performed by recording normal scanned spectra in the form of line-scans, with higher energy resolution and better accuracy as shown in Fig. 5a across the gold electrodes, by application of +4 and −4 V reverse bias...
X-ray photoelectron spectroscopy (XPS) is a crucial surface analysis technique that has become a key tool in the study of heterogeneous catalysis. Detecting surface chemistry under conditions that closely mimic actual industrial catalytic processes is essential for understanding the mechanisms involved. I...
The full set of relative peak posi- tions, FWHM and % contributions for each of Ni2+ and Ni3+ is given in Table 1. The FWHM range used (1.1– 1.5 eV) was chosen based on the use of a similar range by previous authors [20,21]. As with the Fe and Cr GS multi- plet fits [...
Further, the peak model must account for carbon chemistry not shown in Figure Text1 which is often assumed to be contamination by adventitious carbon or some form of degradation to the sample incurred before commencement of the current experiment. 70 60 Residual STD = 0.9821 50 40 30 20 10 ...
The peaks shown in Figure 15 are defined using the parameters displayed in the table on the Components property page illustrated in Figure 16. The line- shape parameter in this example is defined using the LA functional form, where the parameters provide a degree of asymmetry to the right of...