期刊
DALTON TRANSACTIONS
卷 43, 期 24, 页码 9234-9241出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4dt00105b
关键词
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资金
- National Key Basic Research Program of China [2013CB933200]
- National Natural Science Foundation of China [21177137]
- Science and Technology Commission of Shanghai Municipality [11JC1413400]
A simple physical-vapor-infiltration (PVI) method using ferrocene as the iron source, has been developed to load FeOx into the pore channels of mesoporous silica SBA-15. The obtained FeOx/SBA-15 composite has a high loading amount of FeOx (e. g. 26.64 wt% Fe content obtained at PVI duration 17 h and calcination temperature 450 degrees C) but unblocked pore channels thanks to the unique preparation strategy. The FeOx species are amorphous, rich of Fe2+ and have been highly dispersed as a nanocoating onto the pore channel surface. The FeOx/SBA-15 composite was used as a heterogeneous Fenton catalyst to degrade Acid orange 7 (AO7). It showed a high catalytic activity and degradation efficiency, which was attributed to the high proportion of Fe2+ in the amorphous FeOx and their favorable adsorption capability for the dye. The influences of the PVI duration, the calcination temperature and the Fenton reaction conditions (FeOx/SBA-15 dosages, H2O2 dosages and initial pH value) on the catalytic activity were investigated in detail.
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