Incorporation of alkali metals on Pt(111)

被引：27

作者：

Lehmann, J

Roos, P

Bertel, E

机构：

[1] Max-Planck-Institut für Plasmaphysik, Abteilung Oberflächenphysik, EURATOM Association

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.54.R2347

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The alkali-metal-doped platinum (111) surface is one of the most popular model systems for studies on catalytic promotion. Our results indicate that in the low-coverage range the alkali metals Na and K are incorporated into the surface. This is in contrast to the widely accepted adsorption geometry and calls for the reexamination of the current picture of alkali-metal-coadsorbate interactions on Pt(111). The driving mechanism for the incorporation is apparently different from that known on other metal surfaces and may be related to the large surface stress of Pt(111).

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收藏

页码：R2347 / R2350

页数：4

相关论文

共 27 条

[1] MESOSCOPIC STRUCTURAL TRANSFORMATIONS OF THE AU(111) SURFACE-INDUCED BY ALKALI-METAL ADSORPTION [J].

BARTH, JV ;

BEHM, RJ ;

ERTL, G .

SURFACE SCIENCE, 1994, 302 (03) :L319-L324

[2]

BARTH JV, 1993, SURF SCI, V292, pL769, DOI 10.1016/0039-6028(93)90376-U

[3] ADSORPTION, SURFACE RESTRUCTURING AND ALLOY FORMATION IN THE NA/AU(111) SYSTEM [J].

BARTH, JV ;

BEHM, RJ ;

ERTL, G .

SURFACE SCIENCE, 1995, 341 (1-2) :62-91

[4] PROMOTION OF CATALYTIC REACTIONS BY DEPOPULATION OF SURFACE-STATES [J].

BERTEL, E ;

ROOS, P ;

LEHMANN, J .

PHYSICAL REVIEW B, 1995, 52 (20) :14384-14387

[5]

BERTEL E, 1996, PHYS CHEM, V100, P114

[6]

BONZEL HP, 1993, CHEM PHYSICS SOLIDS, V6, P108

[7] SURFACE RECONSTRUCTION AND SURFACE EXPLOSION PHENOMENA IN THE NICKEL (110) HYDROGEN SYSTEM [J].

CHRISTMANN, K ;

CHEHAB, F ;

PENKA, V ;

ERTL, G .

SURFACE SCIENCE, 1985, 152 (APR) :356-366

[8] ALKALI-METAL ADSORPTION GEOMETRIES ON METAL-SURFACES FROM PHOTOELECTRON-DIFFRACTION EXPERIMENTS [J].

FASEL, R ;

OSTERWALDER, J .

SURFACE REVIEW AND LETTERS, 1995, 2 (03) :359-386

[9] NONWETTING AND STICKING OF THE HEAVY RARE-GASES ON POTASSIUM SURFACES [J].

FRIESS, W ;

STEINACKER, E ;

BRUNNER, T ;

MENZEL, D .

SURFACE SCIENCE, 1993, 298 (01) :L173-L180

[10] POTASSIUM AND POTASSIUM OXIDE MONOLAYERS ON THE PLATINUM(III) AND STEPPED PLATINUM(755) CRYSTAL-SURFACES - A LEED, AES, AND TDS STUDY [J].

GARFUNKEL, EL ;

SOMORJAI, GA .

SURFACE SCIENCE, 1982, 115 (02) :441-454