Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 195, Issue -, Pages 192-198Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2017.12.015
Keywords
Strontium ferrite; MW-induced catalytic degradation; Methyl violet; Crystal violet; Catalytic mechanism
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Funding
- National Nature Science Foundation of China [NSFC21707061, 51672116]
- 123 Project of China Environmental Protection Foundation [CEPF2013-123-1-1]
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A novel microwave (MW)-absorbing material, SrFe2O4, was prepared by sol-gel method and used to degrade organic dyes under MW irradiation. The MW-induced catalytic performances were evaluated in detail. SrFe2O4 showed high catalytic activity for organic dyes such as methyl violet (MV) and crystal violet (CV). The enhanced catalytic performance could be ascribed to the production of MW-induced active species, such as holes (h(+)), superoxide radicals (center dot O-2(-)) and hydroxyl radicals (center dot OH) in the degradation process. A possible degradation mechanism and pathway was proposed in MW/SrFe2O4 system. Moreover, SrFe2O4 as an eco-friendly catalyst could be easily separated and recycled by a magnet. This work showed a great potential of SrFe2O4 particles for environmental purification of organic pollutants.
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