Abstract

We have studied the initial stage of Pb nucleation and growth on both reconstructed and unreconstructed Au(111) from 5.7mM Pb(NO3)2 + 50mM HClO4 using scanning tunneling microscopy. We have found that Pb clusters grow preferentially along the 23 × √3 reconstruction of Au(111), a result that is similar to studies of metal deposition on reconstructed Au(111) in ultrahigh vacuum. A superperiodic structure of monolayer Pb was also observed and can be explained as a result of the rotation of the hexagonal-close packed Pb monolayer relative to the Au lattice. The coverage and average diameter of the growing Pb clusters were found to increase in two steps which correlate with the double peak in the voltammogram from underpotential deposition.

Original languageEnglish (US)
JournalSurface Science
Volume271
Issue number1-2
DOIs
StatePublished - 1992

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Monolayers
Ultrahigh vacuum
Scanning tunneling microscopy
ultrahigh vacuum
scanning tunneling microscopy
Nucleation
Metals
nucleation
metals

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Initial stage of underpotential deposition of Pb on reconstructed and unreconstructed Au(111). / Tao, Nongjian; Pan, J.; Li, Y.; Oden, P. I.; DeRose, J. A.; Lindsay, Stuart.

In: Surface Science, Vol. 271, No. 1-2, 1992.

Research output: Contribution to journalArticle

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AU - Tao, Nongjian

AU - Pan, J.

AU - Li, Y.

AU - Oden, P. I.

AU - DeRose, J. A.

AU - Lindsay, Stuart

PY - 1992

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