fig5

Figure 5. (A) Schematic illustration of ternary metal oxide nanosheet synthesis (A₁), and TEM images of Co-Cu-O (A₂), Co-Mn-O (A₃), Co-Ni-O (A₄), and Co-Zn-O (A₅). Figure B is quoted with permission from Qin et al.^[108]; (B) Schematic illustration of the synthesis of ZnO and Al₂O₃ (B₁); SEM image (B₂) and TEM image (B₃) for Zn-tannic acid coordination polymer; SEM image (B₄) and TEM image (B₅) for Al-tannic acid coordination polymer. Figure 5B is quoted with permission from Wang et al.^[116]. ZIF: Zeolitic imidazolate framework; MOF: metal-organic framework; NS: nanosheet; TEM: transmission electron microscopy; SEM: scanning electron microscope.