Adsorption of metal cations from aqueous solution onto tin oxide thin films

Michael J. Tarlov, John F. Evans

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Secondary ion mass spectrometry, x-ray photoelectron spectroscopy, electron energy-loss spectroscopy, x-ray diffraction, transmission electron microscopy, and 15N hydrogen profiling have been used to characterize rf sputter-deposited tin oxide thin films (1500-2500Å) before and after immersion in aqueous solutions to determine the extent of film hydration and ion exchange actlvity. The results support a model in which the tin oxide film is comprised of microcrystalline, colloidlike particles or grains (200-300Å), the ion exchange sites being located on the hydroxylated grain surfaces. The uptake of Na+ in the bulk film increases sharply at a pH = 3-5 corresponding to literature values for the isoelectric point of Sn02.

Original languageEnglish (US)
Pages (from-to)941-943
Number of pages3
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume5
Issue number4
DOIs
StatePublished - Jul 1 1987

Fingerprint Dive into the research topics of 'Adsorption of metal cations from aqueous solution onto tin oxide thin films'. Together they form a unique fingerprint.

  • Cite this