FABRICATION AND PHOTOCATALYTIC PROPERTIES OF TiO2 NANOFILMS CO-DOPED WITH Fe3+ AND Bi3+ IONS

作者：Gao Qiongzhi; Liu Xin; Liu Wei; Liu Fang; Fang Yueping; Zhang Shiying^*; Zhou Wuyi^*

来源：Surface Review and Letters, 2016, 23(2): 1550099.

DOI：10.1142/S0218625X15500997

• Sol-gel method
• TiO2 nanofilm
• photocatalytic activity

In this work, the titanium dioxide (TiO2) nano films co-doped with Fe3+ and Bi3+ ions were successfully fabricated by the sol-gel method with dip-coating process. Methylene blue was used as the target degradation chemical to study the photocatalytic properties affected by different doping contents of Fe3+ and Bi3+ ions. The samples were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and infrared (IR) spectroscopy. The results indicated that both pure TiO2 nanofilms and single-doped samples possessed the photocatalytic activity in degradation of methylene blue. However, when the nanofilms co-doped with Fe3+ and Bi3+ ions were fabricated at the molar ratio of 3:1 (Fe3+:Bi3+), they exhibited the best photocatalytic activity after the heat treatment at 500 degrees C for 2 h. The wettability property test indicated that the TiO2 nanofilms co-doped with Fe3+ and Bi3+ ions in the molar ratio 3:1 owned an excellent hydrophilic property.

• 单位
  长沙学院; 华南农业大学