Adsorption of Water on Gold

S. Lee, R. W. Staehle

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

In the atmospheric corrosion of copper, nickel, and iron, adsorption of water affects corrosion rates. Knowledge of water adsorption and metal oxy hydroxide formation is important in understanding the atmospheric corrosion process. Gold provides a model system because it retains its surface characteristics throughout adsorption experiments. The quartz-crystal microbalance (QCM) technique was used to measure the mass change of gold at 0% to 100% relative humidities (RH) and from 7°C to 90°C under nitrogen (N2) environments. Shapes of the Isotherms suggested capillary condensation and filling of pores, in addition to physical adsorption, occur on gold and are more significant at higher temperatures. Adsorption isotherms observed were of Type III and Type IV according to the Brunauer-Emmett-Teller (BET) classification.

Original languageEnglish (US)
Pages (from-to)843-852
Number of pages10
JournalCorrosion
Volume52
Issue number11
DOIs
StatePublished - Nov 1996

Keywords

  • Atmospheric corrosion
  • Copper
  • Corrosion rate
  • Gold
  • Iron
  • Nickel
  • Quartz-crystal microbalance technique
  • Relative humidity
  • Water adlayer electrolyte
  • Water adsorption

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