NONLINEAR ISLAND GROWTH DYNAMICS IN ADSORBATE-INDUCED RESTRUCTURING OF QUASI-HEXAGONAL RECONSTRUCTED PT(100) BY CO

被引：78

作者：

HOPKINSON, A

BRADLEY, JM

GUO, XC

KING, DA

机构：

[1] Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, Lensfield Road

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.71.1597

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have made the first dynamic measurement of the (1 x 1)-CO island growth rate and the simultaneous CO coverage on the quasihexagonal reconstructed (hex-R) phase during the CO-induced hex-R--> (1 x 1) phase transformation on Pt{100}. The island growth rate is described by a strongly nonlinear power law with respect to the local CO coverage on the hex-R phase at surface temperatures between 380 and 410 K, with an apparent reaction order of 4.5 +/- 0.4. These kinetics manifest themselves as a strongly flux dependent net sticking probability.

引用

页码：1597 / 1600

页数：4

共 17 条

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