Fe₃O₄@C Nanoparticles Synthesized by In Situ Solid-Phase Method for Removal of Methylene Blue.

ABSTRACT: Fe₃O₄@C nanoparticles were prepared by an in situ, solid-phase reaction, without any precursor, using FeSO₄, FeS₂, and PVP K30 as raw materials. The nanoparticles were utilized to decolorize high concentrations methylene blue (MB). The results indicated that the maximum adsorption capacity of the Fe3O4@C nanoparticles was 18.52 mg/g, and that the adsorption process was exothermic. Additionally, by employing H₂O₂ as the initiator of a Fenton-like reaction, the removal efficiency of 100 mg/L MB reached ~99% with Fe₃O₄@C nanoparticles, while that of MB was only ~34% using pure Fe₃O₄ nanoparticles. The mechanism of H₂O₂ activated on the Fe₃O₄

SUBMITTER: Xiang H 

PROVIDER: S-EPMC7912336 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature