Fig. 2
HAADF-STEM imagings and spectroscopy of the Au/CeO2 and Au/AC. a Lattice structure of an Au/CeO2 nanorod and annotated model structure of the CeO2 (110) exposed plane (yellow ball = Ce atom, light grey ball = O atom) (scale bar, 2.5 nm). Inserts are the FFT pattern and corresponding simulated FFT pattern. (also see Supplementary Figure 5) b Elemental EDS mapping, from the area marked within a white box, of an Au/CeO2 nanorod (scale bar, 2.5 nm). c A snapshot image of Au atoms dispersed on CeO2 and d their drift to the edge of CeO2 under electron beam (scale bar, 1 nm). e, f The Au/AC pre-reduced in 5% H2/N2 for 3 h and reactivated under HCl/C2H2 after 5 h (scale bar, 0.5 μm). g, h The Au/CeO2 pre-reduced in H2 for 3 h and reactivated under HCl/C2H2 after 5 h (scale bar, 10 nm). (Au particles in red cycles) i EDS of an Au/CeO2 nanorod
