Reflection-Absorption Infrared Spectroscopy Using a Fourier Transform Spectrometer : A Study of Carbon Monoxide Adsorbed on Pt(111)
The major advantage of infrared spectroscopy over EELS for the study of adsorbate vibrations lies in superior resolution. This factor is particularly important when bandwidths are inherently low (< 5 cm−1) and adsorbate-adsorbate interactions lead to splitting of vibrational bands on a scale of 10 cm−1 or less.
We have been investigating the application of infrared interferometry to the reflection-absorption experiment while studying the adsorption of carbon monoxide on a Pt(111) recrystallised foil using a Digilab FTS-14 spectrometer. In this paper the advantages and limitations associated with the interferometric technique will be outlined and the ultimate sensitivity of currently available FT-IR instruments discussed. The results for the platinum/carbon monoxide system will be used to illustrate the desirability of operation at high (2 cm−1) resolution and the advantage of scanning a wide spectral range.
KeywordsElectron Energy Loss Spectroscopy Wide Spectral Range Platinum Foil FOURIER Transform Spectrometer Ultimate Sensitivity
Unable to display preview. Download preview PDF.
- 5.Chemical Fourier Transform Infrared Spectroscopy’, P.R, Griffiths Wiley-Interscience Publications 1975.Google Scholar
- 6.Introductory Fourier Transform Spectroscopy’, R.J. Bell, Academic Press, New York, 1972.Google Scholar
- 7.Transform Techniques in Chemistry’, P.R. Griffiths ( Ed. ), Plenum Press 1978.Google Scholar
- 9.M.D. Baker, M.A. Chesters, C.M. Deeley,to be published.Google Scholar
- 14.Donald Kuehl, Peter R. Griffiths, Anal. Chem. 50 (1978) 418.Google Scholar
- 16.M.J. Dignam, M.D. Baker, to be published.Google Scholar