Highly efficient visible/NIR photocatalytic activity and mechanism of Yb3+/Er3+ co-doped Bi4O5I2 up-conversion photocatalyst

Bi4O5I2 has attracted much attention as a visible-light-driven photocatalyst, but its photocatalytic activity should be further improved for future practical application. Herein, we design and prepared Er3+/Yb3+ co-doped Bi4O5I2 nanosheets by a facile solvothermal method. The samples were characterized by XRD, SEM, TEM, XPS, DRS, PL, and EIS. The photocatalytic activities of samples were evaluated by the degradation of RhB and imidacloprid....