Electron spectroscopic study of the interaction of WC(0001) with different adsorbates (C6H6, CO and NO)

被引：9

作者：

Brillo, J ^{[1
]}

Sur, R ^{[1
]}

Kuhlenbeck, H ^{[1
]}

Freund, HJ ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, Phys Chem Abt, D-14195 Berlin, Germany

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 1998年 / 88卷

关键词：

electron spectroscopy; interaction; adsorbates;

D O I：

10.1016/S0368-2048(97)00214-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We report ARUPS, TDS and AES data for a clean and adsorbate covered (CO, NO, C6H6) WC(0001) surface. All studied molecules interact strongly with this carbide surface. NO and CO adsorb in an upright adsorption geometry and dissociate even below room temperature. For CO it could be shown that it bonds via its carbon end to the surface. The interaction of benzene with WC(0001) depends strongly on oxygen precoverage. With no oxygen precoverage, decomposition at about 200 K is observed. When the surface is covered by an oxidic phase, benzene interacts only weakly with the substrate and no dissociation is observed. Benzene on WC(0001) precovered with an oxycarbide represents an intermediate case. (C) 1998 Elsevier Science B.V.

引用

页码：809 / 815

页数：7

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