Hydrothermal synthesis of WO3/Fe2O3 nanosheet arrays on iron foil for photocatalytic degradation of methylene blue

作者：Lei, Rui; Ni, Hongwei^*; Chen, Rongsheng; Zhang, Bowei; Zhan, Weiting; Li, Yang

来源：Journal of Materials Science: Materials in Electronics , 2017, 28(14): 10481-10487.

DOI：10.1007/s10854-017-6821-x

• DOPED TUNGSTEN-OXIDE
• WO3
• FABRICATION
• GENERATION

The growth of WO3/Fe2O3 nanosheet arrays on iron foil was fabricated by a facile and efficient hydrothermal treatment. The morphology and optical property of as-prepared WO3/Fe2O3 nanocomposites were characterized by using field-emission scanning electron microscopy, energy-dispersive X-ray spectrometry, transmission electron microscopy, X-ray diffraction and UV-Vis diffuse reflectance spectra. The photocatalytic activity of the as-synthesized WO3/Fe2O3 nanocomposite was evaluated by the degradation of methylene blue (MB) in aqueous solution under visible-light (lambda > 420 nm) irradiation. It was observed that the sample obtained with a hydrothermal reaction time for 2 h exhibited the best photocatalytic performance. The kinetics of the MB degradation was found to comply with the Langmuir-Hinshelwood model. The photocatalytic efficiencies of WO3/Fe2O3NSAs correlated with the effective separation of photogenerated electron-hole pairs. Hence, the WO3/Fe2O3NSAs are excellent candidate for visible-light-driven photocatalysts.

• 出版日期2017-7
• 单位武汉科技大学