Fig. 3: In situ NAP-XPS and in situ Raman studies of Pt/Sn0.2Ti0.8O2, Pt/TiO2-R and Pt/TiO2-A pretreated with 5% H2 at 300 °C. | Nature Communications

Fig. 3: In situ NAP-XPS and in situ Raman studies of Pt/Sn0.2Ti0.8O2, Pt/TiO2-R and Pt/TiO2-A pretreated with 5% H2 at 300 °C.

From: Reverse oxygen spillover triggered by CO adsorption on Sn-doped Pt/TiO2 for low-temperature CO oxidation

Fig. 3

a–c In situ NAP-XPS Pt 4 f spectra recorded at 100 °C after (a) Pt/Sn0.2Ti0.8O2, (b) Pt/TiO2-R, and (c) Pt/TiO2-A was exposed to 1 mbar of O2, 0.5 mbar of CO with 0.5 mbar of O2, and 1 mbar of CO in turn. d–f In situ Raman spectra recorded at 100 °C after (d) Pt/Sn0.2Ti0.8O2, (e) Pt/TiO2-R, and (f) Pt/TiO2-A was exposed to 1% O2, 1% CO + 1% O2, and 1% CO in turn under ambient pressure. The term SOE means the second-order effect.

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