In Situ Infrared Study of Inhibitors and the Solid-Electrolyte Interface
Abstract
A tunable diode laser spectrometer has been constructed for the study of thin protective films and inhibitors on metals and oxides. Infrared spectra can be measured over the mid infrared range on films and adsorbates under a wide variety of environments--ranging from in situ electrochemical cell to ultrahigh vacuum environments. The spectrometer uses a photoelastic modulator and commercially available diode lasers to make single-beam single-pass measurements of molecular vibration attributable to monolayer concentrations of molecules chemisorbed or physiosorbed on metal surfaces. It also measures bulk spectra of liquids from a single deflection in an attenuated total reflection (ATR) mode. The spectrometer, operating in the infrared reflection absorption spectroscopy (IRRAS) mode, was used to measure in situ molecular vibrational spectra of a variety of molecular species absorbed as monolayer films on a variety of metallic substrates. Extensive studies were made for pure and diluted liquid pyridine (C5H5N) in the presence of an oxidized aluminum surface in an electrochemical cell environment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 03, 1988
- Accession Number
- ADA201166
Entities
People
- Henry W. White
Organizations
- University of Missouri