Constructing a 2D/2D Bi2O2CO3/Bi4O5Br2 heterostructure as a direct Z-scheme photocatalyst with enhanced photocatalytic activity for NOx removal

As a direct Z-scheme photocatalyst, a two-dimensional/two-dimensional (2D/2D) Bi2O2CO3/Bi4O5Br2 (BOC/BOB) heterostructure was fabricated by stacking the ultrathin nanosheets of Bi2O2CO3 and Bi4O5Br2 via a simple one-step hydrothermal synthesis process. The atomic force microscopy (AFM) and high-resolution transmission electron microscopy (HRTEM) results show that the heterostructure was successfully formed by coupling the ultrathin nanosheets of...