Voltammetric characterization of stepped platinum single crystal surfaces vicinal to the (110) pole

被引：27

作者：

Souza-Garcia, J. ^{[2
]}

Climent, V. ^{[1
]}

Feliu, J. M. ^{[1
]}

机构：

[1] Univ Alicante, Inst Electroquim, E-03080 Alicante, Spain

[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

Platinum single crystal; Pt(110); Stepped surfaces; Cyclic voltammetry; Potential of zero total charge; CO displacement; PERCHLORIC-ACID SOLUTION; ZERO TOTAL CHARGE; POLYCRYSTALLINE PLATINUM; ELECTROCHEMICAL-BEHAVIOR; PT(111) ELECTRODES; IN-SITU; ADSORPTION; REDUCTION; CO; DENSITY;

D O I：

10.1016/j.elecom.2009.05.044

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum stepped surfaces vicinal to the (1 1 0) crystallographic pole have been investigated voltammetrically in 0.1 M HClO4 and 0.1 M H2SO4 solutions. Changes in the voltammetric profile with the step density suggest the existence of two types of surface sites, that has been ascribed to linear and bidimensional domains. This result indicates the existence of important restructuring processes that separate the real surface distribution from the nominal one. The electronic properties of the surfaces have been characterized with the CO charge displacement method and the potential of zero total charge has been calculated as a function of the step density. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：1515 / 1518

页数：4

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