Fabrication of Bi₂MoO6/ZnO Heterojunction Nanosheet Array with High Photoelectrochemical Property.

Herein, we demonstrate the synthesis of Bi₂MoO6 nanosheet array followed with in-situ electrodepositing ZnO layer, resulting in Bi₂MoO6/ZnO heterojunction nanosheet array. The thickness of nanoparticle-based ZnO layer on the surface of Bi₂MoO6 nanosheets can be rational controlled by regulating the electrodepositing time. The combination of oriented Bi₂MoO6 nanosheet array and ZnO layer could not only enhance the conductivity and surface area but also facilitate the charge separation. As expected, the heterojunction electrode yields a photocurrent density of 430 µA/cm² at 0.8 VSCE, which is much higher than that of pristine Bi₂MoO6 and ZnO nanosheet array.