Fig. 5: The superior performance of Au-SAs in high-temperature catalytic reactions compared with a Au-NP.
From: Stabilizing mechanism of single-atom catalysts on a defective carbon surface
a, b Schematic illustration of methane oxidation catalyzed by Au-SAs and a Au-NP at 2000 K. c Time evolution of the molecule number of CH4 in the systems with Au-NP and Au-SA catalysts. d Conversion ratio of CH4 at 2000 K under Au-NP and Au-SA catalysts. e, f The complete catalytic cycle of methane oxidation based on the Au atom for each step for the catalytic mechanisms as proposed in Eqs. (2) and (3), respectively. The inset in the cycle shows the comparison of the energy change for the methane oxidation pathway with and without Au atom catalyst; the value is the activated energy for each step.
