Highly efficient adsorption and removal of Chrysoidine Y from aqueous solution by magnetic graphene oxide nanocomposite
作者： Yongmei Hao , Zhe Wang , Jiajia Gou , Suying Dong
DOI: 10.1016/J.ARABJC.2015.07.013
关键词:
摘要: Abstract A new kind of adsorbent graphene oxide nanocomposite (GO–Fe3O4) for removal Chrysoidine Y was synthesized using the modified Hummers method and co-precipitation. The GO–Fe3O4 used as an from aqueous solution. effect initial pH on adsorption onto has been investigated. kinetics, isotherm thermodynamics also have evaluated. strongly dependent medium. studies revealed that process obeyed Pseudo-second order kinetics model, rate-limiting step might be chemical sorption. And Langmuir applicable to describe process. This hybrid showed a good performance solution with capacity 344.83 mg g−1 at room temperature, could easily removed hand-held magnet in 10 min. Moreover, mechanism discussed thermodynamic parameters were determined. Thermodynamic indicated exothermic spontaneous. Above all, efficiency still kept 96.0% when concentration dye 100 mg L−1 polluted river. work shows is suitable efficient
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