查找使用阿拉丁产品的科研文献

Design and fabrication of ternary BiVO4/FeVO4/Cu2O nanorod array photoelectrode for boosting photoelectrochemical water oxidation

Sitong Liu,Wenzhong Wang,Ying Cheng,Lizhen Yao,Yuhong Liu,Mingjuan Lin,Huabin Chen,Yujie Liang,Junli Fu,Lijuan Wang

In this study, we demonstrate for the first time the construction of a ternary BiVO 4 /FeVO 4 /Cu 2 O nanorod array (NRA) photoelectrode via seed-assisted refluxing, hydrothermal and successive ionic-layer adsorption and reaction (SILAR) method and its photoelectrochemical (PEC) water oxidation performance. The energy band structures of the BiVO 4 , FeVO 4 and Cu 2 O show that two type-II band alignments with a ladder-like structure are formed in the constructed ternary BiVO 4 /FeVO 4 /Cu 2 O NRA photoelectrode, enabling the photoelectrode to display substantially enhanced PEC performance. The constructed ternary photoelectrode loaded with the optimized Cu 2 O nanoparticles achieves a zero-bias photocurrent density of 50 μA cm −2 , 5 times higher than that of the pure BiVO 4 NRA photoelectrode. The measurements of optical property reveal that the constructed BiVO 4 /FeVO 4 /Cu 2 O nanorod arrays (NRAs) demonstrate improved light absorption capability. The electrochemical impedance and photoluminescence measurements confirm that the charge carriers of the BiVO 4 /FeVO 4 /Cu 2 O heterojunction NRAs are transferred and separated effectively. The substantially boosted PEC water oxidation activity of the constructed ternary BiVO 4 /FeVO 4 /Cu 2 O heterojunction NRA photoelectrode is ascribed to the improved light harvesting and effective charge separation.