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- W3037785852 abstract "• Co-NP was obtained by loading Co onto nickel powder by electroless plating. • Co-NP was a highly efficient catalyst for activating PMS to degrade SMX. • SO 4 − was the dominant active free radical for SMX degradation. • SMX degradation mechanism in Co-NP/PMS system was proposed. In this work, cobalt-nickel powder (Co-NP) synthesized through electroless plating was used as a heterogeneous bimetallic catalyst for peroxymonosulfate (PMS) activation to degrade sulfamethoxazole (SMX) in the aqueous phase. Compared with different oxidation systems and different catalysts, it was proved that Co-NP had excellent catalytic ability, fast electron transfer rate and good stability. The effects of key parameters (initial pH, SMX concentration, catalyst and PMS dosages) on SMX degradation and ion leaching were studied in detail. Furthermore, the sensitivity of inorganic anions and different pollutants towards the Co-NP/PMS system was studied to investigate its application in natural water bodies. Quenching test showed that the main reactive oxygen species generated during the reaction were OH and SO 4 − , of which SO 4 − played a predominating role. Combined with XPS analysis, the activation mechanism was concluded that free radicals were mainly generated through the valence change of Co and Ni. Based on the seven intermediates measured through ultrahigh performance liquid chromatograph-mass spectrometry (UPLC-QTOF-MS/MS), the possible degradation pathways of SMX were proposed. Notably, this study provided a new kind of supporter for advanced oxidation processes and electroless plating technology." @default.
- W3037785852 created "2020-07-02" @default.
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- W3037785852 date "2020-12-01" @default.
- W3037785852 modified "2023-10-02" @default.
- W3037785852 title "Degradation of sulfamethoxazole by cobalt-nickel powder composite catalyst coupled with peroxymonosulfate: Performance, degradation pathways and mechanistic consideration" @default.
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- W3037785852 doi "https://doi.org/10.1016/j.jhazmat.2020.123322" @default.
- W3037785852 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32947719" @default.
- W3037785852 hasPublicationYear "2020" @default.
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