期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 101, 期 3-4, 页码 580-586出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2010.10.032
关键词
Photocatalyst; Visible-light-driven; Plasmon resonance; Magnetic nanoparticle; Rhodamine B dye; 4-Chlorophenol
资金
- Major State Basic Resource Development Program [2003CB615807]
- NSFC [20973042]
- Research Fund for the Doctoral Program of Higher Education [20090071110011]
- Natural Science Foundation of Shanghai Science & Technology Committee [08DZ2270500]
A new plasmonic photocatalyst of Ag-AgI/Fe3O4@SiO2 was prepared by deposition-precipitation and photoreduction method. The catalyst exhibited efficient photocatalytic activity for the degradation of rhodamine B dye and 4-chlorophenol under visible light irradiation. The degradation rate of rhodamine B and 4-chlorophenol over Ag-AgI/Fe3O4@SiO2 was about 10 times and 4.1 times faster than that of N-TiO2. respectively. The catalyst could be easily recovered due to its paramagnetic property. X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscope were used to characterize the catalyst. The specified photocatalytic reaction and the study of electron paramagnetic resonance verified that both the O-2(-center dot) and (OH)-O-center dot radicals were the main active species in this reaction. (C) 2010 Elsevier B.V. All rights reserved.
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