The effect of a water overlayer on the chlorine-chemisorbed Ag(100) surface studied by Cl K-edge X-ray absorption fine structure

被引：17

作者：

Endo, O ^{[1
]}

Kondoh, H ^{[1
]}

Yonamoto, Y ^{[1
]}

Yokoyama, T ^{[1
]}

Ohta, T ^{[1
]}

机构：

[1] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

来源：

SURFACE SCIENCE | 2000年 / 463卷 / 02期

关键词：

chemisorption; chlorine; extended X-ray absorption fine structure (EXAFS); low index single crystal surfaces; silver; surface chemical reaction; water;

D O I：

10.1016/S0039-6028(00)00640-3

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 effect of a water overlayer on the chlorine-chemisorbed silver(100) surface has been studied by Cl K-edge X-ray absorption fine structure spectroscopy. It is found that chlorine atoms adsorbed on Ag(100) form a simple c(2 x 2) overlayer with a Cl-Ag bond distance of 2.64 +/- 0.03 Angstrom and Cl-Cl distance of 4.06 +/- 0.05 Angstrom. By dosing water on the chemisorbed surface, the Cl-Ag bond is elongated to 2.70 +/- 0.03 Angstrom and theCl-Cl bond is shortened to 3.90 +/- 0.05 Angstrom. Such a structural change is explained by the partial formation of silver chloride on the surface. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：135 / 144

页数：10

共 56 条

[11] THE ADSORPTION OF CHLORINE AND CHLORIDATION OF AG(III) [J].

BOWKER, M ;

WAUGH, KC .

SURFACE SCIENCE, 1983, 134 (03) :639-664

[12] GEOMETRY OF THE AG(001)-C(2X2)CL STRUCTURE AS DETERMINED BY HE DIFFRACTION [J].

CARDILLO, MJ ;

BECKER, GE ;

HAMANN, DR ;

SERRI, JA ;

WHITMAN, L ;

MATTHEISS, LF .

PHYSICAL REVIEW B, 1983, 28 (02) :494-503

[13] SURFACE-STRUCTURE STUDIES OF CL ADSORPTION ON AG(001) USING ENERGETIC ION-BEAMS [J].

CHANG, CC ;

WINOGRAD, N .

SURFACE SCIENCE, 1990, 230 (1-3) :27-34

[14] COMPARISONS BETWEEN SCANNING TUNNELING MICROSCOPY AND OUTER-SPHERE ELECTRON-TRANSFER RATES AT PT(111) SURFACES COATED WITH ORDERED IODINE ADLAYERS [J].

CHANG, SC ;

YAU, SL ;

SCHARDT, BC ;

WEAVER, MJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (12) :4787-4794

[15] COVERAGE-DEPENDENT DIPOLE COUPLING FOR CARBON-MONOXIDE ADSORBED AT ORDERED PLATINUM(111)-AQUEOUS INTERFACES - STRUCTURAL AND ELECTROCHEMICAL IMPLICATIONS [J].

CHANG, SC ;

WEAVER, MJ .

JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (07) :4582-4594

[16] EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE OF SURFACE ATOMS ON SINGLE-CRYSTAL SUBSTRATES - IODINE ADSORBED ON AG(111) [J].

CITRIN, PH ;

EISENBERGER, P ;

HEWITT, RC .

PHYSICAL REVIEW LETTERS, 1978, 41 (05) :309-312

[17] In-situ X-ray absorption studies of bromine on the Ag(100) electrode [J].

Endo, O ;

Kiguchi, M ;

Yokoyama, T ;

Ito, M ;

Ohta, T .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 473 (1-2) :19-24

[18] Scanning tunneling microscope study of bromine adsorbed on the Ag(111)surface [J].

Endo, O ;

Kondoh, H ;

Ohta, T .

SURFACE SCIENCE, 1999, 441 (2-3) :L924-L930

[19] DETERMINATION OF ADSORPTION SITE BY LOW-ENERGY ELECTRON-DIFFRACTION FOR IODINE ON SILVER (111) [J].

FORSTMANN, F ;

BERNDT, W ;

BUTTNER, P .

PHYSICAL REVIEW LETTERS, 1973, 30 (01) :17-19

[20] PERFORMANCE OF THE COOLING SYSTEM FOR THE SOFT-X-RAY DOUBLE-CRYSTAL MONOCHROMATOR AT THE PHOTON FACTORY [J].

FUNABASHI, M ;

NOMURA, M ;

KITAJIMA, Y ;

YOKOYAMA, T ;

OHTA, T ;

KURODA, H .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1989, 60 (07) :1983-1986

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