Induced Adsorption of Chloride and Bromide by Submonolayer Amounts of Copper Underpotentially Deposited on Pt(111)

Abstract

The underpotential deposition of submonolayer amounts of copper induces an enhanced adsorption of chloride and bromide on Pt(111) and is reflected in exceedingly sharp voltammetric peaks. The adsorbed anions are believed to be in contact with the platinum surface and in the vicinity of the electrodeposited copper. The electrosorption valency for chloride anions was estimated to be about one. This effect of induced adsorption was not observed on Pt(100) pointing to the sensitivity of the process to the surface structure. The advantages of working with low concentrations of metals in UPD studies is illustrated.

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Document Details

Document Type
Technical Report
Publication Date
Mar 14, 1994
Accession Number
ADA278023

Entities

People

  • Héctor D. Abruña
  • J. M. Feliu
  • R. Gomez

Organizations

  • Cornell University Department of Chemistry and Chemical Biology

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DTIC Thesaurus Topics

  • Charge Transfer
  • Chemical Compounds
  • Chemistry
  • Desorption
  • Electrochemistry
  • Electrodeposition
  • Electrodes
  • Electrolytes
  • Hydrogen
  • Measurement
  • Military Research
  • New York
  • Phase Transformations
  • Photoelectrochemical Cells
  • Physical Chemistry
  • Steady State
  • United States

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