Fig. 6: Evolution process from Pt to PtO3–Pt. | Nature Materials

Fig. 6: Evolution process from Pt to PtO3–Pt.

From: Two-dimensional crystalline platinum oxide

Fig. 6

a, O1s peak area evolution of PtO2 and PtO3–Pt in Fig. 1c as a function of temperature. The insets show the O1s spectra under different stages. b, LEED pattern of the clean Pt(111) surface. ce, Corresponding LEED patterns at stage I (c), stage II (d) and stage IV (e). f,g, STM images collected at stage II (f) and stage III (g) in a. il, Atomic models during the oxidation process. Tunnelling parameters: (f) Vs = 500 mV, I = 0.14 nA; (g) Vs = 1.5 V, I = 0.21 nA; g(i) Vs = 1.5 V, I = 0.21 nA; g(ii) Vs = 1.5 V, I = 0.21 nA; (h) Vs = 2.6 V, I = 0.18 nA.

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