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- W3090244580 endingPage "105856" @default.
- W3090244580 startingPage "105856" @default.
- W3090244580 abstract "Clay-based composites are playing an increasingly important role in dye wastewater treatment. Herein, a modified carbon coated palygorskite ([email protected]) was firstly obtained by etching carbon coated palygorskite ([email protected]) under a small amount of hydrofluoric acid. Then, magnetic Co/[email protected] composites were prepared via impregnation and liquid phase chemical reduction. Adsorption performance of Congo red (CR) was investigated. The maximum adsorption capacity of the Co/[email protected] sample was 458.99 mg/g, which was higher than that of Pal (40.00 mg/g), [email protected] (81.97 mg/g) and Co sample (378.91 mg/g). The adsorption rate constant of the Co/[email protected] sample was up to 26.68 × 10−4 g/min∙mL, which was 3.9 times that of the Co sample (6.90 × 10−4 g/min∙mL). Besides, the magnetic Co/[email protected] adsorbent could allow for efficient magnetic separation from the solution and exhibited excellent regeneration ability. The relative standard deviation of the adsorption capacities for 6 cycles was 1.6%. [email protected] carrier weakened the ferromagnetism of CoNPs and also dispersed CoNPs stably, thus preventing the adsorbent agglomeration during cycling. Enhanced adsorption performance of Co/[email protected] was attributed to the synergistic effect between Co and [email protected] The chemical interaction and electrostatic attraction between the SO3− group of CR and oxide species (Co3O4 and CoOOH) on the surface of CoNPs dominated the adsorption capacity. [email protected] can effectively disperse and stabilize CoNPs, thus providing more active adsorption sites. The results provided a new path for preparing high-efficiency and easily separable clay mineral-based adsorbents and broadened their application in dye wastewater treatment." @default.
- W3090244580 created "2020-10-08" @default.
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- W3090244580 date "2020-11-01" @default.
- W3090244580 modified "2023-10-16" @default.
- W3090244580 title "Magnetic carbon-coated palygorskite loaded with cobalt nanoparticles for Congo Red removal from waters" @default.
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- W3090244580 doi "https://doi.org/10.1016/j.clay.2020.105856" @default.
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