Hydrothermal synthesis and enhanced photocatalytic activity of hierarchical flower-like Fe-doped BiVO4

作者：Li, Hai-bin^*; Zhang, Jian; Huang, Guo-you; Fu, Sheng-hao; Ma, Chao; Wang, Bai-yu; Huang, Qian-ru; Liao, Hong-wei

来源：TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2017, 27(4): 868-875.

DOI：10.1016/S1003-6326(17)60102-X

• BiVO4
• hydrothermal method
• Fe doping
• photocatalysis

Fe-doped BiVO4 with hierarchical flower-like structure was prepared via a hydrothermal method using sodium dodecyl benzene sulfonate (SDBS) as structure directing agent. X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis were applied for characterization of the as-prepared samples. The formation mechanism of flower-like structure was proposed based on the evolution of morphology as a function of hydrothermal time. Fe-doped into substitutional sites of BiVO4 effectively improved the migration and separation of photogenerated carrier and enhanced the utilization of visible light. Flower-like Fe-doped BiVO4 showed much higher visible-light-driven photocatalytic efficiency for degradation of methyl blue compared with the pristine BiVO4. And the sample with a Fe/Bi mole ratio of 2.5% showed the highest photocatalytic efficiency.

• 单位
  长沙理工大学