Structural imaging of surface oxidation and oxidation catalysis on Ru(0001)

被引：50

作者：

Flege, J. I. ^{[1
]}

Hrbek, J. ^{[1
,2
]}

Sutter, P. ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[2] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.78.165407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using simultaneous imaging and structural fingerprinting under reaction conditions, we probe the initial oxidation pathway and CO oxidation catalysis on Ru(0001). Oxidation beyond an initial (1x1)-O adlayer phase produces a heterogeneous surface, comprising a disordered trilayerlike surface oxide and an ordered RuO2(110) thin-film oxide, which form independently and exhibit similar stability. The surface oxide and RuO2 phases both show high intrinsic catalytic activity. The oxygen adlayer is inactive in isolation but becomes active due to cooperative effects in close proximity to the surface oxide.

引用

页数：5

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