Spontaneous deposition of Pd on a Ru(0001) surface

被引：41

作者：

Brankovic, SR ^{[1
]}

McBreen, J ^{[1
]}

Adzic, RR ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Energy Sci & Technol Dept, Div Mat & Chem Sci, Upton, NY 11973 USA

来源：

SURFACE SCIENCE | 2001年 / 479卷 / 1-3期

关键词：

scanning tunneling microscopy; surface chemical reaction; growth; palladium; ruthenium; metallic films;

D O I：

10.1016/S0039-6028(01)01006-8

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：

Spontaneous deposition of Pd on a Ru(0 0 0 1) single crystal surface has been demonstrated by an in situ scanning tunneling microscopy technique. The immersion of an ultrahigh vacuum prepared Ru single crystal in a palladium ion containing solution results in a formation of an epitaxial and textured multilayer Pd deposit without applying an external potential. The amount of deposited Pd can be indirectly controlled by the amount of Pd ions confined in the solution volume in contact with a Ru surface. The results suggest that the initial Pd growth involves formation of an ordered monolayer, while further growth results in formation of a three-dimensional Pd deposit. (C) 2001 Published by Elsevier Science B.V.

引用

页码：L363 / L368

页数：6

共 19 条

[1] PALLADIUM ADSORPTION ON PT(111) - A COMBINED ELECTROCHEMICAL AND ULTRA-HIGH-VACUUM STUDY [J].

ATTARD, GA ;

PRICE, R ;

ALAKL, A .

ELECTROCHIMICA ACTA, 1994, 39 (11-12) :1525-1530

[2] THE ELECTROCHEMICAL-BEHAVIOR OF IRREVERSIBLY ADSORBED PALLADIUM ON PT(111) IN ACID-MEDIA [J].

ATTARD, GA ;

BANNISTER, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1991, 300 (1-2) :467-485

[3] Metal monolayer deposition by replacement of metal adlayers on electrode surfaces [J].

Brankovic, SR ;

Wang, JX ;

Adzic, RR .

SURFACE SCIENCE, 2001, 474 (1-3) :L173-L179

[4] Enhancement in methanol oxidation by spontaneously deposited ruthenium on low-index platinum electrodes [J].

Chrzanowski, W ;

Kim, H ;

Wieckowski, A .

CATALYSIS LETTERS, 1998, 50 (1-2) :69-75

[5] Ultrathin films of ruthenium on low index platinum single crystal surfaces: An electrochemical study [J].

Chrzanowski, W ;

Wieckowski, A .

LANGMUIR, 1997, 13 (22) :5974-5978

[6] AN IRREVERSIBLE STRUCTURE SENSITIVE ADSORPTION STEP IN BISMUTH UNDERPOTENTIAL DEPOSITION AT PLATINUM-ELECTRODES [J].

CLAVILIER, J ;

FELIU, JM ;

ALDAZ, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 243 (02) :419-433

[7] METHANOL ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RN ALLOYS [J].

GASTEIGER, HA ;

MARKOVIC, N ;

ROSS, PN ;

CAIRNS, EJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (46) :12020-12029

[8]

GRAY DE, 1972, AM I PHYS HDB, pCH9

[9] Scanning tunneling microscopy images of ruthenium submonolayers spontaneously deposited on a Pt(111) electrode [J].

Herrero, E ;

Feliu, JM ;

Wieckowski, A .

LANGMUIR, 1999, 15 (15) :4944-4948

[10] PLATINUM-TIN CATALYSTS FOR METHANOL FUEL-CELLS PREPARED BY A NOVEL IMMERSION TECHNIQUE, BY ELECTROCODEPOSITION AND BY ALLOYING [J].

JANSSEN, MMP ;

MOOLHUYSEN, J .

ELECTROCHIMICA ACTA, 1976, 21 (11) :861-868

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