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2000
Volume 21, Issue 9
  • ISSN: 1573-4110
  • E-ISSN: 1875-6727

Abstract

Background

The problem of nuclear water pollution is becoming serious worldwide. Uranium, as a metal substance with long half-life radioactivity, is commonly treated by various methods. Adsorption is considered to be one of the most promising methods for treating uranium-containing wastewater.

Methods

Magnetic nanoparticles MnFeO were prepared the coprecipitation method, followed by modification of silica using the improved Stöber method. Subsequently, amino was functionalized and grafted onto graphene oxide to prepare a novel magnetic graphene oxide composite MnFeO@SiO-NH@GO.

Results

The highest adsorption rate of MnFeO@SiO-NH@GO for uranium can reach 97.27% in 1 mg·L-1 uranium solution, and the adsorption process conformed to the quasi-second-order kinetic model and Langmuir adsorption isotherm model, indicating that it was a monolayer adsorption dominated by chemisorption. The adsorption thermodynamic parameters demonstrated that the adsorption process was a spontaneous endothermic reaction.

Conclusion

MnFeO@SiO-NH@GO had excellent adsorption properties for uranium, which has great application potential in the treatment of low-concentration uranium-containing wastewater.

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2025-12-14

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Study on the Adsorption Performance of a Novel Magnetic Graphene Oxide Adsorbent for Uranium
Current Analytical Chemistry 21, 1199 (2025); https://doi.org/10.2174/0115734110307561240822094748
/content/journals/cac/10.2174/0115734110307561240822094748
/content/journals/cac/10.2174/0115734110307561240822094748
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  • Article Type:     Research Article
Keyword(s): adsorption; graphene oxide; Magnetic nanoparticles; MnFe2O4; treatment; uranium ions

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