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- W4224018375 abstract "Exploitation of heterogeneous catalysts with high activity, stability and reusability gains increasing worldwide attention due to the tremendous demand for purification of dye wastewater. Copper/iron bimetallic catalysts have been proven to be powerful for persulfate activation to generate reactive radical species. Copper/iron nanoparticles loaded onto porous carbon (Cu/[email protected]) was innovatively designed and used as catalyst for peroxymonosulfate (PMS) activation. Cu/[email protected] manifests high catalytic activity for dye degradation over a wide pH range (4.0–10.0). Under conditions of 0.2 g/L catalyst, PMS 0.15 g/L and pH 4.8, nearly complete degradation (98.4%) of Rhodamine B occurs after 18 min. The rate constant is between 0.0946 and 0.1911 min−1 depending on initial solution pH. Mixed dyes can be efficiently degraded verified by UV–vis spectra and color variation of dye solution. Cu/[email protected] has good stability, magnetism, and reusability for recycling. A synergistic effect of promoting Cu2+/Cu+ and Fe3+/Fe2+ cycle is probability ascribed to the enhanced catalytic activity. The mechanism of catalytic degradation of dyes involves radical species (SO4-• and •OH) and non-radical pathways including 1O2 and mediated electron transfer. This work provides insights into rational design of binary metal catalysts that apply to treatment of dye wastewater." @default.
- W4224018375 created "2022-04-19" @default.
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- W4224018375 date "2022-06-01" @default.
- W4224018375 modified "2023-10-03" @default.
- W4224018375 title "Efficient degradation of toxic mixed dyes through peroxymonosulfate activation by copper/iron nanoparticles loaded on 3D carbon: Synthesis, characterizations, and mechanism" @default.
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- W4224018375 doi "https://doi.org/10.1016/j.jece.2022.107606" @default.
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