Fig. 3: Structural characterization of the Au/CoOOH catalyst.
a SEM image of the Au/CoOOH catalyst. Scale bar, 3 μm. b HRTEM images of a representative region. Inset displays an individual Au nanoparticle. Scale bars: 20 nm (b); 2 nm (inset). c Size distribution of the Au NPs. d XRD patterns of the Au/CoOOH catalyst and Au/Co(OH)2.
