fig5

Figure 5. (A) Digital images showing p-BWO in its initial state versus its colored state; (B) Diagram illustrating the separation of photogenerated carriers in p-BWO, and the mechanism behind photocatalytic toluene oxidation and photochromism; (C) Schematic depiction of the microscopic structure and operational mechanism of p-BWO; (D) Toluene conversion rate for BWO, and p-BWO at varying substrate loadings. Reprinted with permission, Copyright 2018, Springer Nature^[47]; (E) Illustration of the band structure for 0.01BOC/TiO₂; (F) Toluene conversion rate and the benzaldehyde formation rate for TiO₂, BOC, and 0.01BOC/TiO₂. Reproduced with permission, Copyright 2023, American Chemical Society^[159]. p-BWO: Photochromic Bi₂WO_6-x/amorphous BiOCl; BOC: BiOCl; NHE: normal hydrogen electrode.