Fig. 5: Comparison of CO oxidation activity of Pt/TiO2 catalysts.
a The Arrhenius plots show the temperature dependence of the per-Pt-atom rate (1/s) for CO oxidation on each catalyst within the temperature range from 250 to 300 °C. The apparent activation energy (\({E}_{a}\)) is indicated for each catalyst, and the error bars in TOF represent the standard deviation from four independent measurements. Operando IR spectra of (b) Pt(0.05)/TiO2-truncated bipyramid and (c) Pt(0.05)/TiO2-nanosheet catalysts collected during CO oxidation at conditions identical to (a). A flow rate of 50 sccm comprising 1% CO, 10% O2, and balance Ar was used for the activity measurement and spectra collection.
