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The method of binding energy calibration in XPS spectra should be detailed.

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XPS analyseswere performed with a V.G. Scientific ESCALAB250
using focused (diameter of the irradiated area was approximately
500m) monochromated Al K (h = 1486.6 eV, 150W). An electron
shower was used in order to compensate for charging effects.
Ahemispherical electrostatic analyzer and a LargeAreaXL Lenswere
used tomaximize the signal. The residual pressure inside the analysis
chamber was 6¡Á10−10 mbar. The spectrometer was calibrated
using the photoemission lines of Au (Au 4f7/2 = 83.95 eV), Ag (Ag
3d5/2 = 368.22 eV) and Cu (Cu 2p3/2 = 932.62 eV). The peaks were
recorded at a constant pass energy of 20 eV and XPS datawere taken
at normal emission ( =0◦ for all catalysts. No smoothing routine
of data was applied to the data during the analysis. Atomic ratios
were then computed from the intensity ratios normalized by the
atomic sensitivity factors of Scofield [6]. A Shirley-type background
subtraction was done prior to curve fitting, and fitting the experimental
curve to 80% Gaussian¨C20% Lorentzian function. In addition,
aminimum number of doubletswere always used in order to fit the
experimental curves.

W. Huang et al. / Journal of Electron Spectroscopy and Related Phenomena 173 (2009) 88¨C95
2Â¥2012-11-23 18:02:19
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PhD_Americo_Rigoldi.pdf(5.6MB)
http://kuai.xunlei.com/d/GOSOAFBJUPSZ?p=130497
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