Hydrothermal synthesis of hemisphere-like F-doped anatase TiO2 with visible light photocatalytic activity

作者：Yu, Changlin^*; Zhou, Wanqin; Yang, Kai; Rong, Gan

来源：Journal of Materials Science, 2010, 45(21): 5756-5761.

DOI：10.1007/s10853-010-4646-6

• SONOCHEMICAL FABRICATION
• SURFACE
• OXIDATION
• HYDROPHILICITY
• CATALYST

Hemisphere-like F-doped anatase TiO2 has been synthesized by hydrothermal treatment of TiF4 aqueous solution in the presence of starch at 130 A degrees C for 10 h, and then calcined at 450 A degrees C for 2.5 h in air. The as-synthesized product has been investigated by photocatalytic reaction test and characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) spectroscopy, X-ray photoelectron spectroscopy (XPS), and UV-Vis diffuse reflectance spectra (DRS). The results showed that fluorine was successfully doped into the TiO2 hemispheres. The F-doped TiO2 hemispheres showed high visible light activity in degradation of acid orange II, which could be attributed to the creation of oxygen vacancies and good crystallinity.

• 出版日期2010-11
• 单位江西理工大学