In-Situ Atomic Structure of Underpotentially Deposited Monolayers of Pb and Tl on Au(111) and Ag(111): A Surface X-ray Scattering Study

Toney, Michael F.; Gordon, Judith R.; Samant, Mahesh G.; Borges, Gary L.; Melroy, Owen R.; Yee, Dennis; Sorensen, L. B.

doi:10.1021/j100013a050

Cited by 99 publications

(142 citation statements)

References 21 publications

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“…Underpotential deposition (upd) is one of the best techniques to prepare ultrathin metal films on single crystal electrode surfaces with well-defined atomic arrangements [1][2][3]. The potential dependent structures of upd metal films with atomic resolution have been studied in situ by scanning tunneling microscopy (STM) [1,[4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], atomic force microscopy (AFM) [22,23], and surface X-ray scattering (SXS) [24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Stability of underpotentially deposited Ag layers on a Au(111) surface studied by surface X-ray scattering

Kondo

Takakusagi

Uosaki

2009

Electrochemistry Communications

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Stability of underpotentially deposited (upd) Ag layers on Au(111) surface was investigated by surface X-ray scattering (SXS). While the complete pseudomorphic Ag bilayer on Au(111) surface obtained by upd at 10 mV (vs. Ag/Ag + ) was maintained its structure even after the circuit was disconnected and the surface was exposed to ambient atmosphere, the pseudomorphic Ag monolayer obtained by upd at 50 mV was converted to a partial bilayer with the coverage of 0.66 ML and 0.46 ML for the 1st and 2nd layer, respectively. These results show that Ag bilayer is structurally more stable than Ag monolayer on Au(111) and Ag atoms of the upd monolayer move around on the Au(111) surface without potential control.

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Section: Introductionmentioning

confidence: 99%

Stability of underpotentially deposited Ag layers on a Au(111) surface studied by surface X-ray scattering

Kondo

Takakusagi

Uosaki

2009

Electrochemistry Communications

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“…Good agreement between the simulation and experiment is considered as a support for the bridge adsorption model. However, the assumptions regarding the Pb adalyer are not in agreement with the results of SXS studies of the Pb/Au(111) system by Toney et al [173]. Additionally, the large cover age by P b is lands , not a specific str uctur e, was found to produce a maximum activity for H 2 O 2 reduction on A u(111) [ 174].…”

Section: Acid Solu Tionsmentioning

confidence: 74%

Electrocatalysis on Surfaces Modified by Metal Monolayers Deposited at Underpotentials

Adžić

2002

Encyclopedia of Electrochemistry

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The sections in this article are Introduction Structural and Electronic Properties of Electrode Surfaces with Metal Adlayers Electrocatalysis on Surfaces Modified with Metal Adlayers Redox Reactions Oxidation of Organic Molecules Formic Acid Methanol Carbon Monoxide Other Organic Molecules Electroorganic Synthesis Hydrogen Evolution Oxygen Reduction Alkaline Solutions Acid Solutions Hydrogen Peroxide Reduction Mechanisms of Catalytic Effects Electrodeposition of Metals Acknowledgment

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“…The application of in-situ surface X-ray scattering techniques to the study of electrochemical systems has contributed to the elucidation of the structure of metal monolayers adsorbed at underpotential [1,2,3,4,5,6]. Among these systems is particularly interesting the case of sp metals adsorbed at underpotential on dense substrate faces like Ag(111) and Au(111).…”

Section: Introductionmentioning

confidence: 99%

First principles calculations of monolayer compressibilities

Sánchez

Leiva

1998

Electrochimica Acta

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We perform high quality, first principles calculations of the properties of Pb and Tl isolated monolayers. Among these, we consider the equilibrium lattice constant, the two dimensional compressibilities and the electronic density. Comparison is made with previous results obtained using more simplified models. The present results represent an improvement concerning the calculated compressibilities; these remaining still lower than the measured values. We speculate that the latter could be due to some corrugation of the monolayer, not considered in the present modeling.

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In-Situ Atomic Structure of Underpotentially Deposited Monolayers of Pb and Tl on Au(111) and Ag(111): A Surface X-ray Scattering Study

Cited by 99 publications

References 21 publications

Stability of underpotentially deposited Ag layers on a Au(111) surface studied by surface X-ray scattering

Stability of underpotentially deposited Ag layers on a Au(111) surface studied by surface X-ray scattering

Electrocatalysis on Surfaces Modified by Metal Monolayers Deposited at Underpotentials

First principles calculations of monolayer compressibilities

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