We prepared the ZnO nanocomposites with WO3or CuO nanostructures to improve the photocatalytic performance of ZnO nanostructures. The characterizations of the nanocomposites by using SEM, X-ray diffractor, UV-vis spectrometer, and photoluminescence reveal the morphologies and wide light absorption range of materials. The highest current densities of WO3/ZnO and CuO/ZnO nanocomposites were up to 1.28 mA/cm2and 2.49 mA/cm2at 1.23V (vs RHE) under AM 1.5 100 mW/cm2, which are ~ 1.2 and 3.5-fold greater than that of the ZnO nanostructures, respectively. The facile fabrication process suggests that nanocomposite with narrow bandgap materials, such as WO3and CuO, would improve the performance of electrochemical and optoelectrical devices, such as dye-sensitized solar cells and biosensor.
- photoelectrochemical water splitting cells
- visible range photoanodes