In-situ observation of oxygen adlayer formation on Cu(110) electrode surfaces

John R. LaGraff; Andrew A. Gewirth

doi:10.1016/0039-6028(95)00004-6

In-situ observation of oxygen adlayer formation on Cu(110) electrode surfaces

John R. LaGraff
, Andrew A. Gewirth

Research output: Contribution to journal › Article › peer-review

Abstract

In-situ atomic force microscopy (AFM) was used to image Cu(110) single crystals in aqueous solutions during the initial stages of oxidation. Images obtained in pH 2.5-2.7 HClO₄ and H₂SO₄ solutions revealed the growth of oxygen adlayers consisting primarily of [001] oriented chains. A majority of these chains (ca. 70%) were arranged in (2 × 1) and (3 × 1) structures. These chain structures were observed in the thermodynamically forbidden region of the pH-potential phase diagram, which indicates that stable oxygen adlayers develop prior to bulk oxide formation.

Original language	English (US)
Pages (from-to)	L461-L466
Journal	Surface Science
Volume	326
Issue number	3
DOIs	https://doi.org/10.1016/0039-6028(95)00004-6
State	Published - Mar 20 1995

Keywords

Adatoms
Atomic force microscopy
Copper
Metal-electrolyte interfaces
Solid-liquid interfaces
Surface structure
Surface thermodynamics

ASJC Scopus subject areas

Materials Chemistry
Surfaces, Coatings and Films
Condensed Matter Physics
Surfaces and Interfaces
Physical and Theoretical Chemistry

Online availability

10.1016/0039-6028(95)00004-6

Library availability

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@article{532f0751fdc54ced9f715f31767f5109,

title = "In-situ observation of oxygen adlayer formation on Cu(110) electrode surfaces",

abstract = "In-situ atomic force microscopy (AFM) was used to image Cu(110) single crystals in aqueous solutions during the initial stages of oxidation. Images obtained in pH 2.5-2.7 HClO4 and H2SO4 solutions revealed the growth of oxygen adlayers consisting primarily of [001] oriented chains. A majority of these chains (ca. 70\%) were arranged in (2 × 1) and (3 × 1) structures. These chain structures were observed in the thermodynamically forbidden region of the pH-potential phase diagram, which indicates that stable oxygen adlayers develop prior to bulk oxide formation.",

keywords = "Adatoms, Atomic force microscopy, Copper, Metal-electrolyte interfaces, Solid-liquid interfaces, Surface structure, Surface thermodynamics",

author = "LaGraff, \{John R.\} and Gewirth, \{Andrew A.\}",

note = "J.R.L. acknowledges a National Science Foundation Postdoctoral Fellowship (CHE-9302406). A.A.G. acknowledges a Presidential Young Investigator Award (CHE-9027593) with matching funds provided by Digital Instruments, Inc and is an A.P. Sloan Foundation Fellow. This work was funded by the Department of Energy (DE-FG02-91ER45349) through the Materials Research Laboratory at the University of Illinois.",

year = "1995",

month = mar,

day = "20",

doi = "10.1016/0039-6028(95)00004-6",

language = "English (US)",

volume = "326",

pages = "L461--L466",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - In-situ observation of oxygen adlayer formation on Cu(110) electrode surfaces

AU - LaGraff, John R.

AU - Gewirth, Andrew A.

N1 - J.R.L. acknowledges a National Science Foundation Postdoctoral Fellowship (CHE-9302406). A.A.G. acknowledges a Presidential Young Investigator Award (CHE-9027593) with matching funds provided by Digital Instruments, Inc and is an A.P. Sloan Foundation Fellow. This work was funded by the Department of Energy (DE-FG02-91ER45349) through the Materials Research Laboratory at the University of Illinois.

PY - 1995/3/20

Y1 - 1995/3/20

N2 - In-situ atomic force microscopy (AFM) was used to image Cu(110) single crystals in aqueous solutions during the initial stages of oxidation. Images obtained in pH 2.5-2.7 HClO4 and H2SO4 solutions revealed the growth of oxygen adlayers consisting primarily of [001] oriented chains. A majority of these chains (ca. 70%) were arranged in (2 × 1) and (3 × 1) structures. These chain structures were observed in the thermodynamically forbidden region of the pH-potential phase diagram, which indicates that stable oxygen adlayers develop prior to bulk oxide formation.

AB - In-situ atomic force microscopy (AFM) was used to image Cu(110) single crystals in aqueous solutions during the initial stages of oxidation. Images obtained in pH 2.5-2.7 HClO4 and H2SO4 solutions revealed the growth of oxygen adlayers consisting primarily of [001] oriented chains. A majority of these chains (ca. 70%) were arranged in (2 × 1) and (3 × 1) structures. These chain structures were observed in the thermodynamically forbidden region of the pH-potential phase diagram, which indicates that stable oxygen adlayers develop prior to bulk oxide formation.

KW - Adatoms

KW - Atomic force microscopy

KW - Copper

KW - Metal-electrolyte interfaces

KW - Solid-liquid interfaces

KW - Surface structure

KW - Surface thermodynamics

UR - https://www.scopus.com/pages/publications/0029271404

UR - https://www.scopus.com/pages/publications/0029271404#tab=citedBy

U2 - 10.1016/0039-6028(95)00004-6

DO - 10.1016/0039-6028(95)00004-6

M3 - Article

AN - SCOPUS:0029271404

SN - 0039-6028

VL - 326

SP - L461-L466

JO - Surface Science

JF - Surface Science

IS - 3

ER -

In-situ observation of oxygen adlayer formation on Cu(110) electrode surfaces

Abstract

Keywords

ASJC Scopus subject areas

Online availability

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