Dear All
I prepared N doped TiO2 and I found there are two additional peaks showing in XPS analysis at 716 and 836 eV. Please, may you help me to know what are they belonging to?
Thanks in advance
Regards,
Assuming your spectra were charge corrected properly, it is still difficult to know what caused those peaks. Again, assuming you understand XPS data analysis well and have eliminated the "usual" sources for peaks, it could indicate that some contamination has occurred during your processing of the TiO2. A good source for possibly identifying these peaks is the NIST XPS database (http://srdata.nist.gov/xps/main_search_menu.aspx)
Dear Prof. Eric
Thanks for your favorable reply. Those peaks have shown up after washing my catalyst with water and drying at 80 C
Regards,
These are odd numbers for something whihc has been dried. AS we have no idea of your charge correction, the major core-line for elements in a 5 eV window of those energies are:
716 peak: Fe (Fe(2p))
836 Peak: La (La(3d))
However, one would assume the other orbitals are also showing - e.g. Fe(3s) at ~100 eV
I assume that you are washing your catalyst with deionised water.
I agree with David...these are odd peaks. It begs the question, how often is your instrument's calibration checked and are spectra of known, "clean" materials checked for anomolies.
The other question that begs to be asked is, how significant are these peaks when compared to the background and have any peak specific high resolution scans been carried out?
Hello,
Good day.
If you have used an an Mg Kα X-ray source, a significant Ti LMM Auger peak appears at 839 eV (BE Scale).
Have a nice day.
Kind regards.
Dear Dr. Jr
Thanks for reply. Please, what is the reason for this peak, please
Regards,
Hello
Good day.
Although I'm not sure I have understood your question you may find more information about auger peaks in:
http://www.casaxps.com/help_manual/manual_updates/xps_spectra.pdf
Have a nice day
Kind Regards
Dear All
Please what is the binding energy of TiO with oxygen vacancy in XPS
Regards
Dear Amal EIsonbaty,
Coincidentally, I am working on the XPS analysis of TiO2 with oxygen vacancies. Please refer to my result enclosed. I hope it may be useful to you.
Regards
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