Dear Ximena Ortiz many thanks for sharing this very interesting technical question on RG. I'm actually not a specialist in this field, but I just came across the following potentially useful article which migth help you in your analysis:

In Situ Raman Observation of Oxygen Activation and Reaction at Platinum–Ceria Interfaces during CO Oxidation

Article In Situ Raman Observation of Oxygen Activation and Reaction ...

Unfortunately this paper has not yet been posted as public full text on RG. However, two of the authors have RG profiles. Thus you can easily contact one of them via RG and request the full text. Normally, authors respond quite rapidly to such full text request. Perhaps they can also help you directly with your question as they are expert in this field of research.

I hope this helpy. Good luck with your research and best wishes, Frank Edelmann

Wooow

Thank you so much!