Figure 2

(A) The SEM image of carboxylated g-C₃N₄. Inset: TEM image of carboxylated g-C₃N₄. (B) SEM images of Bi₂S₃ NRs. (C) Transient photocurrents of Bi₂S₃ NRs (a), g-C₃N₄ (b), g-C₃N₄/Bi₂S₃ (c). (D) TEM image of TiO₂. (E) SEM image and EDS of Cd²⁺@TiO₂ (F).