Fabrication of Ta3N5 and ZnO Composite-Type Photoanodes by the Roll Press Method

In our study, we fabricated Ta3N5 and ZnO composite-type photoanodes using the roll press method. Compared with the pristine Ta3N5 photoanode, the composite photoanodes exhibited better optical and photoelectrochemical properties, especially at low electrode potential. These results could have come from the high visible-light transparency of the ZnO and the formation of a heterojunction between the Ta3N5 and the ZnO. This fabrication process could be applied to other materials.