Magnetic GO/Fe₃O₄ for rapid malachite green (MG) removal from aqueous solutions: a reversible adsorption.

ABSTRACT: Magnetic GO/Fe₃O₄ was synthesized using co-precipitation of Fe²⁺ and Fe³⁺ composited with graphene oxide (GO) in alkaline conditions. SEM, XPS, FTIR, N₂ adsorption and VSM techniques were employed to characterize the surface peculiarities of GO/Fe₃O₄ and it was then used for removal of malachite green (MG). The key influencing factors on adsorption, such as mass ratio of GO, pH value and dosage of GO/Fe₃O₄, were investigated. The Freundlich isotherm was well fitted to the experimental data, suggesting GO/Fe₃O₄ has more than one type of reactive site. By comparing the adsorption of anionic dyes and cationic dyes onto GO/Fe₃O₄, it was concluded that G

SUBMITTER: Li W 

PROVIDER: S-EPMC9033599 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature