Facile synthesis of pyrite FeS 2 on carbon spheres for high-efficiency Fenton-like reaction

Designing iron-based catalysts for Fenton-like reactions with peroxymonosulfate (PMS) as oxidants have attracted growing attentions. Herein, pyrite FeS supported on carbon spheres (FeS @C) is synthesized by a facile low-temperature method. The FeS @C/PMS system can degrade carbamazepine (CBZ) effect...

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Published inChemosphere (Oxford) Vol. 355; p. 141799
Main Authors Ma, Chengbo, Liu, Yuexu, Wang, Jun, Evrard Deric, Nkuissi Tchikou, Li, Yang, Fan, Xiaobin, Peng, Wenchao
Format Journal Article
LanguageEnglish
Published England 01.05.2024
Subjects
Carbon spheres
Fe(III)/Fe(II) cycle
Pyrite FeS
Fixed-bed reactor
Long-term stability
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Summary:Designing iron-based catalysts for Fenton-like reactions with peroxymonosulfate (PMS) as oxidants have attracted growing attentions. Herein, pyrite FeS supported on carbon spheres (FeS @C) is synthesized by a facile low-temperature method. The FeS @C/PMS system can degrade carbamazepine (CBZ) effectively in a wide pH range. Sulfate radicals (SO ), hydroxyl radicals (·OH), superoxide radical (O ), and singlet oxygen ( O ) are the responsible reactive oxygen species (ROSs) for CBZ degradation. Moreover, in the simulated fixed-bed reactor, the FeS @C/PMS system can maintain a high CBZ removal ratio of >95% for than 8 h, exhibiting its excellent stability. The outstanding performance of FeS @C/PMS system is attributed to the presence of carbon spheres and lattice S , which together promote the Fe(III)/Fe(II) redox cycle. The FeS @C is a promising catalyst due to its facile synthesis, low cost, high efficiency, and excellent stability to activate PMS for organics degradation.
ISSN:1879-1298