Evolution with increasing coverage

Fig. 25. TPRS spectra for HjCO/ Oj, CH3OD showing the evolution of the two peaks with increasing coverage of intermediates on the surface (137). Reprinted with permission of North-Holland Publishing Company, Amsterdam, 1978.

FEED and TPR spectra showed the evolution of the formate structure with increasing coverage (Fig. 11.13) [21], At low exposure to formic acid, both autocatalytic (370 K) and normal first-order decomposition routes for the formate occurred in the TPRS. With increasing formate coverage, the normal first- order decomposition route was suppressed, demonstrated by the disappearance of the low... 

Ultraviolet photoemission valance-band spectra with increasing Pd coverage on Al203/Re(0001) have been measured [33] and are shown in Figure 13. A gradual evolution of metallic valance bands with increasing cluster size is a manifestation of the increase in density of states near the Fermi level and the appearance of dispersing bands parallel and perpendicular to the substrate. The latter has been attributed to the formation of crystallites with a preferred orientation. The appearance of dispersion may also be used to dehne the boundary between a metallic and... 

Fig. 5.14 Evolution ofXPS C Is spectra of F8BT with increasing Cs coverage. The two shake-up peaks (peak jt (l) and peak Jt (2)) and an extra peak that may be related to...

Fig. 5.18 Evolution ofXPS (a) S 2p, (b) N Is, and (c) C Is spectra of F8BT with increasing Yb coverage. The Yb coverage from (a) to (g) is the same as that in Fig. 5.32. In (c), the two satellite peaks (peaks A and B) are shown in the inset.

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