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

Qiongzhi Gao, Xin Liu, Wei Liu, Fang Liu, Yueping Fang, Shiying Zhang and Wuyi Zhou
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Qiongzhi Gao: College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. China
Xin Liu: College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. China
Wei Liu: College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. China
Fang Liu: College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. China
Yueping Fang: College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. China
Shiying Zhang: #x2020;Key Laboratory of Application Technology of Environmental Photocatalysis of Hunan Province, Changsha University, Changsha 410022, P. R. China
Wuyi Zhou: College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P. R. China

Surface Review and Letters (SRL), 2016, vol. 23, issue 02, 1-8

Abstract: In this work, the titanium dioxide (TiO2) nanofilms 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∘C for 2h. 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.

Keywords: Sol–gel method; TiO2 nanofilm; photocatalytic activity (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1142/S0218625X15500997

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