Figure 3: ZnO-CuO mesocrystal structural characterization.
From: A nanocomposite superstructure of metal oxides with effective charge transfer interfaces
(a) HAADF-STEM image of a ZnO-CuO mesocrystal. Scale bar, 100 nm. (b) EDX spectrum of ZnO-CuO mesocrystal (the Kα peaks of Cu (8.04 keV) and Zn (8.63 keV) are highlighted in red and green, respectively). (c) EDX line scan profile across the single ZnO-CuO mesocrystal along the red line in image a. The arrows indicate the ZnO nanocrystals on the mesocrystal surface. (d) Cross-sectional HAADF-STEM image of a ZnO-CuO mesocrystal. Scale bar, 200 nm. (e–g) EDX elemental mapping of O, Cu and Zn in the cross-section of a ZnO-CuO mesocrystal. (h) High-resolution cross-sectional HAADF-STEM image. Scale bar, 10 nm. (i,j) High-resolution EDX elemental mapping of Zn and Cu in the cross-section of a ZnO-CuO mesocrystal. (k) Merged image of i and j.
