Kinetics of surface modification induced by submonolayer electrochemical oxygen adsorption on Pt(111)

被引：48

作者：

Bjoerling, Alexander ^{[1
]}

Ahlberg, Elisabet ^{[2
]}

Feliu, Juan M. ^{[1
]}

机构：

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

[2] Univ Gothenburg, Dept Chem, Gothenburg, Sweden

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 03期

关键词：

Pt(111) electrodes; Surface modification kinetics; Electrochemical oxygen adsorption; Electrocatalysis; Place-exchange disordering; PLATINUM-ELECTRODES; TERRACE SITES; OXIDE-GROWTH; VOLTAMMETRY; STEP;

D O I：

10.1016/j.elecom.2009.12.034

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical oxygen adsorption/desorption below monolayer level leads to a disordering of platinum single-crystal surfaces vicinal to the (1 1 1) plane. The kinetics can be described by means of a consecutive reaction from (1 1 1)-terrace sites to (1 1 0)-defect sites, in which (1 0 0)-defects act as intermediates. The first oxidation of the electrode reflects independent contributions from terrace and step sites, the latter being structure sensitive. Oxygen adsorption charges amount to a mean value of one electron per step site. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：359 / 361

页数：3

共 11 条

[1] STRUCTURAL-CHANGES OF A PT(111) ELECTRODE INDUCED BY ELECTROSORPTION OF OXYGEN IN ACIDIC SOLUTIONS - A COUPLED VOLTAMMETRY, LEED AND AES STUDY [J].

ABERDAM, D ;

DURAND, R ;

FAURE, R ;

ELOMAR, F .

SURFACE SCIENCE, 1986, 171 (02) :303-330

[2] PREPARATION OF MONO-CRYSTALLINE PT MICROELECTRODES AND ELECTROCHEMICAL STUDY OF THE PLANE SURFACES CUT IN THE DIRECTION OF THE (111) AND (110) PLANES [J].

CLAVILIER, J ;

FAURE, R ;

GUINET, G ;

DURAND, R .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1980, 107 (01) :205-209

[3] INSITU PROBING OF STEP AND TERRACE SITES ON PT(S)-[N(111)X(111)] ELECTRODES [J].

CLAVILIER, J ;

ELACHI, K ;

RODES, A .

CHEMICAL PHYSICS, 1990, 141 (01) :1-14

[4] ELECTROCHEMICAL ADSORPTION BEHAVIOR OF PLATINUM STEPPED SURFACES IN SULFURIC-ACID-SOLUTIONS [J].

CLAVILIER, J ;

ARMAND, D ;

SUN, SG ;

PETIT, M .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 205 (1-2) :267-277

[5]

CLAVILIER J, 1988, ELECTROCHEMICAL SURF, V378, P14

[6] ELECTROCHEMICAL OXIDE FILM FORMATION AT NOBLE-METALS AS A SURFACE-CHEMICAL PROCESS [J].

CONWAY, BE .

PROGRESS IN SURFACE SCIENCE, 1995, 49 (04) :331-452

[7] Simulation of anodic Pt oxide growth [J].

Harrington, DA .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 420 (1-2) :101-109

[8] INSITU SCANNING TUNNELING MICROSCOPY OF PLATINUM (111) SURFACE WITH THE OBSERVATION OF MONATOMIC STEPS [J].

ITAYA, K ;

SUGAWARA, S ;

SASHIKATA, K ;

FURUYA, N .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1990, 8 (01) :515-519

[9] Surface-oxide growth at platinum electrodes in aqueous H2SO4 Reexamination of its mechanism through combined cyclic-voltammetry, electrochemical quartz-crystal nanobalance, and Auger electron spectroscopy measurements [J].

Jerkiewicz, G ;

Vatankhah, G ;

Lessard, J ;

Soriaga, MP ;

Park, YS .

ELECTROCHIMICA ACTA, 2004, 49 (9-10) :1451-1459

[10] HYDROGEN PROBING OF STEP AND TERRACE SITES ON PT(S)-[N(111) X (100)] [J].

RODES, A ;

ELACHI, K ;

ZAMAKHCHARI, MA ;

CLAVILIER, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 284 (01) :245-253

← 1 2 →