Surface science insight note: A linear algebraic approach to elucidate native films on Fe3O4 surface
[3];
[5]
- The Institute for Research on Catalysis and the Environment of Lyon (IRCELYON), Villeurbanne (France)
- Centre National de la Recherche Scientifique (CNRS) (France); Nantes Université (France)
- Cardiff Univ., Wales (United Kingdom); HarwellXPS – EPSRC National Facility for Photoelectron Spectroscopy, Research Complex at Harwell (RCaH), Didcot (United Kingdom)
- Casa Software Ltd, Teignmouth (United Kingdom)
- Lehigh Univ., Bethlehem, PA (United States)
Standard materials are often used to obtain spectra that can be compared to those from unknown samples. Spectra measured from these known substances are also used as a means of computing sensitivity factors to allow quantification by X-ray photoelectron spectroscopy (XPS) of less well-defined materials. Spectra from known materials also provide line shapes suitable for inclusion in spectral models which, when fitted to spectra, permit the chemical state for a sample to be assessed. Both types of information depend on isolating photoemission signals from the inelastically scattered signal. In this Insight note, technical issues associated with the use of XPS of as received Fe3O4 powder sample surface are discussed. The Insight note is designed to show how linear algebraic techniques applied to data collected from a sample marketed as pure Fe3O4 powder are used to verify that XPS has been performed on chemistry representative of the sample. The methods described in this Insight note can further be utilized in elucidating complex XPS data obtained from thin films formed or evolved during cyclic/non-steady use of complex (electro)catalyst surfaces, especially in the presence of contaminants.
- Research Organization:
- Georgia Institute of Technology, Atlanta, GA (United States)
- Sponsoring Organization:
- Conseil National de la Recherche Scientifique (CNRS); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012577
- OSTI ID:
- 2575933
- Journal Information:
- Surface and Interface Analysis, Journal Name: Surface and Interface Analysis Journal Issue: 4 Vol. 56; ISSN 1096-9918; ISSN 0142-2421
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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