The Effects of Trace Anions on the Voltammetry of Single Crystal Gold Surfaces

Abstract

The development of a new technique for mounting single crystals as a Hanging Meniscus Rotating Disk (HMRD) electrode has facilitated the study of the effect of traces of anionic impurities on the voltammetry of gold single crystals. It is shown that the cause of most of the differences between voltammetry curves reported in the literature for the same crystal face is the presence in the solution of low levels of C1 and Sulfate ions which were present in the original reagent. Variation of the rotation rate from 0-10,000 r.p.m. permitted a change of the effective concentrations of these impurities by a factor of 100. The resultant curves are compared to those produced by purposeful addition of these anions. Keywords: Rotating disk electrode; Hanging meniscus, Single crystal electrode, Anion impurities.

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Document Details

Document Type
Technical Report
Publication Date
Aug 18, 1989
Accession Number
ADA211886

Entities

People

  • B. D. Cahan
  • E. B. Yeager
  • H. M. Villullas

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Adsorption
  • Chemical Synthesis
  • Chemistry
  • Compensation
  • Crystal Structure
  • Crystals
  • Diffusion
  • Films
  • Geometry
  • Materials
  • Materials Processing
  • Materials Science
  • Measurement
  • Military Research
  • Phase
  • Square Roots
  • Voltammetry

Readers

  • Electrochemical Surface Science
  • Environmental Engineering
  • Nanofabrication and Microfabrication.