Figure 9.
(a) Natural logarithm of benzyl alcohol concentration (normalized by initial concentration) during the catalytic oxidation reaction under air (blue, O2: 0.21 atm) or pure O2 (red, O2: 1 atm). Conditions other than O2 pressure were the same as those for Figure 8. Two alcohol oxidation pathways on Au24:PVP: (b) hydrogen abstraction by O2 and (c) hydride elimination by Au24.