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• W4220860227 endingPage "135682" @default.
• W4220860227 startingPage "135682" @default.
• W4220860227 abstract "• Stable Fe x Co 3-x O 4 @SnO 2 nanocubes as efficient PMS activators for water remediation. • SnO 2 shells induce the generation of rich Co 2+ and V o sites on the Fe x Co 3-x O 4 surface. • The synergy of Co 2+ and V o contributes to efficient PMS activation for BPA removal. • SnO 2 shells preserve the cubic structure of Fe x Co 3-x O 4 and inhibit Co leaching. • SO 4 · - and HO· radicals are identified as dominant reactive species for BPA removal. Cobalt-based heterogeneous composites, as promising peroxymonosulfate (PMS) activators for water remediation, usually suffer from the less reactive sites and metal leakage unfavorable for environmental application. Herein, the well-designed Fe x Co 3-x O 4 @SnO 2 nanocubes are successfully constructed by calcinating Fe-Co prussian blue analogue coated with Sn(OH)Cl. The formation of SnO 2 shells preserves the nanocubic microstructure of Fe x Co 3-x O 4 to enlarge the specific surface area and induces the generation of rich Co 2+ and oxygen vacancy sites on the Fe x Co 3-x O 4 surface. The synergy of Co 2+ sites and oxygen vacancies contributes to the efficient adsorption and activation of PMS molecules, resulting in the generation of sulfate and hydroxyl radicals as the dominant reactive species for bisphenol A removal. Through adjusting the thickness of SnO 2 shells, the optimal composite, Fe x Co 3-x O 4 @SnO 2 -2 exhibits the excellent catalytic performance for PMS-involved reaction as compared to the conventional iron/cobalt-based oxides. Moreover, SnO 2 shells can effectively inhibit the metal ions leaching during catalytic reaction, which is of great significance for reducing the secondary pollution to water bodies. This study develops a new strategy to regulate the oxygen vacancy sites and inhibit the metal leaching of cobalt ferrites, offering a step forward in the design of high efficient and stable heterogeneous catalysts for water remediation." @default.
• W4220860227 created "2022-04-03" @default.
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• W4220860227 date "2022-07-01" @default.
• W4220860227 modified "2023-10-18" @default.
• W4220860227 title "SnO2 shells-induced rich Co2+ sites and oxygen vacancies in FexCo3-xO4 nanocubes: Enhanced peroxymonosulfate activation performance for water remediation" @default.
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• W4220860227 doi "https://doi.org/10.1016/j.cej.2022.135682" @default.
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