Citation: LUAN Jing-Fei, HU Wen-Hua, CHEN Biao-Hang, PEI Dong-Hua. Structural and Photocatalytic Properties of Fe₂BiTaO₇ Nanocatalyst[J]. Chinese Journal of Inorganic Chemistry, ;2015, (2): 385-398. doi: 10.11862/CJIC.2015.046 shu

Structural and Photocatalytic Properties of Fe₂BiTaO₇ Nanocatalyst

1.
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China

Corresponding author: LUAN Jing-Fei,
Received Date: 17 September 2014
Available Online: 13 November 2014
Fund Project: 国家自然科学基金(No.21277067) (No.21277067)中以科学与战略研究开发专项资金(No.5)资助项目 (No.5)

Fe₂BiTaO₇ powder photocatalyst was synthesized by a solid state reaction method. The structural and photocatalytic properties of Fe₂BiTaO₇ were characterized by XRD, SEM, TEMand UV-Vis diffuse reflectance spectroscopy. The results show that Fe₂BiTaO₇ crystallizes with the pyrochlore-type structure, cubic crystal system and space group Fd3m. The estimated band gap of Fe₂BiTaO₇ is 1.72 eV. The photocatalytic degradation of rhodamine Bover Fe₂BiTaO₇, P25 TiO₂, N-doped TiO₂ and Bi₂InTaO₇ was investigated under visible light irradiation. The photocatalytic efficiency with Fe₂BiTaO₇ catalyst is 1.5 times of N-doped TiO₂ catalyst after 140 minutes under visible light irradiation. Fe₂BiTaO₇ has higher visible-light photocatalytic performance and shows much better activity than that of other photocatalysts. The photocatalytic degradation of rhodamine Bfollows the first-order reaction kinetics, and the first-order rate constant is 0.02293 min^-1 for Fe₂BiTaO_7. The possible photocatalytic degradation pathway of rhodamine Bunder visible light irradiation is suggested. In addition, the photocatalytic degradation of phenol over Fe₂BiTaO₇ catalyst was investigated under visible light irradiation. Fe₂BiTaO₇ (visible light) photocatalysis system is confirmed to be suitable for textile industry wastewater treatment.
- catalysis;Fe₂BiTaO₇;optical properties;visible light;photocatalytic degradation;rhodamine B
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Structural and Photocatalytic Properties of Fe2BiTaO7 Nanocatalyst

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Structural and Photocatalytic Properties of Fe₂BiTaO₇ Nanocatalyst