| ac-HAADF/STEM | aberration-corrected annual dark field scanning transmission microscope |
| Au NPs | gold nanoparticles |
| HRTEM | high resolution transmission electron microscopy |
| WGS | water-gas shift reaction |
| TPR | temperature-programmed reduction |
| FTIR CO | Fourier transform infrared spectroscopy of adsorbed CO |
| MSI | metal-support interaction |
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