fig11

Figure 11. (A) Structural model diagram of Cs₃Bi₂I₉; (B) Electrochemical properties of different products. Reprinted with permission from Ref.^[81]. Copyright 2023, Wiley-VCH; (C) AFM image of BiOX sample; (D) In-BOB, measured at -1.15 V_{vs RHE} and plotted as normalized intensity versus energy. Reprinted with permission from Ref.^[82]. Copyright 2023, Springer; (E) Schematic diagram of the preparation of bismuth halide and reaction process to Bi NSs; (F) Electrochemical property testing of sample. Reprinted with permission from Ref.^[83]. Copyright 2022, Elsevier. BOB: BiOBr.