STRUCTURAL EFFECTS ON THE DYNAMICS OF AN ELECTROCATALYTIC OSCILLATOR

被引：17

作者：

EISWIRTH, M ^{[1
]}

LUBKE, M ^{[1
]}

KRISCHER, K ^{[1
]}

WOLF, W ^{[1
]}

HUDSON, JL ^{[1
]}

ERTL, G ^{[1
]}

机构：

[1] UNIV VIRGINIA, DEPT CHEM ENGN, CHARLOTTESVILLE, VA 22903 USA

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 192卷 / 2-3期

关键词：

D O I：

10.1016/0009-2614(92)85461-I

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrocatalytic oxidation of hydrogen in the presence of Cu2+ and Cl- ions under galvanostatic conditions has been studied on the three low-index plane surfaces of platinum. Over the parameter ranges investigated and with the electrode pretreatment used, no oscillations were observed on Pt (110), whereas only simple periodic oscillations were seen with Pt (111). The Pt(100) surface, on the other hand, exhibited a variety of oscillation types, including simple periodic oscillations, period-doubling, chaos and mixed-mode behavior as two parameters, copper ion concentration and current density, were varied. The dynamics on Pt (100) turned out qualitatively very similar to that observed previously on polycrystalline platinum electrodes.

引用

页码：254 / 258

页数：5

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