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- W3096136532 endingPage "104710" @default.
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- W3096136532 abstract "To harmlessly treat and effectively utilize manganese residue (MR), a novel MR-based catalyst, mechanical activation (MA)-pretreated MR-derived [email protected]2/starch-derived carbon ([email protected]2/SC) composite, was prepared through a facial method by reduction roasting of MA-pretreated precursors. The prepared catalysts were systematically characterized to explore the formation and catalytic activities. The results showed that the formation of CuFeO2 anchored on the MR could be ascribed to the close contact and mutual diffusion between solid components caused by MA, and the higher specific surface area, strong interaction of Fe-Cu and more accessible reactive sites of [email protected]2/SC contributed to the greater catalytic activity in photo-Fenton system for tetracycline (TC) degradation. The [email protected]2/SC catalyst showed excellent degradation efficiency at pH range of 2.5–9.5, and about 100% TC removal in 40 min and 85.6% TOC removal in 120 min could be obtained. The [email protected]2/SC exhibited the highest apparent reaction rate constant of 0.066 min–1, being about 4.0, 2.8, and 2.2 times that for the catalyst of Cu/SC, MAMR-Fe3O4@SiO2/SC and [email protected]2/SC, respectively. This enhancement could be attributed to that anchored Cu could accelerate the charge transfer, and short the reaction pathway between photo and Fenton reaction. XPS results showed that the presence of Fe2+-Fe3+, Mn2+-Mn3+ and Cu+-Cu2+ cycles were responsible for the radical generation on the surface of the catalyst. This environmentally-friendly method for the preparation of composite catalysts may provide new insights for harmless fixed treatment and valorization of MR and large-scale production of catalyst." @default.
- W3096136532 created "2020-11-09" @default.
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- W3096136532 date "2021-02-01" @default.
- W3096136532 modified "2023-09-30" @default.
- W3096136532 title "Cu anchored on manganese residue through mechanical activation to prepare a Fe-Cu@SiO2/starch-derived carbon composites with highly stable and active visible light photocatalytic performance" @default.
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- W3096136532 doi "https://doi.org/10.1016/j.jece.2020.104710" @default.
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