期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 220, 期 -, 页码 1-12出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2017.03.005
关键词
BiFeO3 nanoparticles; Sol-gel process; Visible-light driven photocatalysis; Photocaralyric mechanism
资金
- National Natural Science Foundation of China [51372237, 51572250]
- Zhejiang Provincial Natural Science Foundation of China [LY17E020009]
- Research Project of Public Welfare Quality Testing Industry of China [201510072]
- Zhejiang Provincial Higher School Talent Project [PD2013183]
In this work, the effect of Sm doping on the structural and photocatalytic properties of BiFeO3 (BFO) was investigated. A series of Sm doped BFO nanoparticles containing different Sm dopant contents (Bi(1-x)SmxFeO3, x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.10) were synthesized via a simple sol-gel route. It was revealed that Sm3+ ions were successfully doped into BFO nanoparticles, and the band gap value was gradually decreased when increasing Sm dopant concentration. The photocatalytic activity of Sm-doped BFO photocatalyst was significantly affected by the Sm doping content. Compared to pure BFO, the Sm-doped BFO samples exhibited much higher photocatalytic activity. The improved photocatalytic activity of Sm-doped BFO could be attributed to the enhanced visible light absorption and the efficient separation of photogenerated electrons and holes derived from Sm dopant trapping level in the Sm-doped BFO samples. In addition, the possible photocatalytic mechanism of Sm-doped BFO photocatalyst was also proposed. (C) 2017 Elsevier B.V. All rights reserved.
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