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Abstract In this work, magnetic Fe3O4 nanoparticles coupled with flower-like MoSe2 nanosheets (Fe3O4@MoSe2) with high specific surface area and excellent magnetic properties was fabricated by a stepwise hydrothermal method, and… Click to show full abstract
Abstract In this work, magnetic Fe3O4 nanoparticles coupled with flower-like MoSe2 nanosheets (Fe3O4@MoSe2) with high specific surface area and excellent magnetic properties was fabricated by a stepwise hydrothermal method, and characterized by SEM-EDX, XRD, BET and VSM technique. Moreover, Fe3O4@MoSe2 composites as an adsorbent were firstly applied to remove methylene blue (MB) in water, whose maximum adsorption capacity reaches up 88.1 mg/g. And the influence of various adsorption parameters including temperature, initial concentration and pH values of MB solution were also studied in detail. The data fitting of adsorption kinetics and adsorption isotherms followed well with pseudo-second-order and Langmuir adsorption model, respectively. In addition, the experimental data calculated by thermodynamic functions further reveals that the sorption process of MB onto Fe3O4@MoSe2 composites is spontaneous and endothermal. After adsorption, Fe3O4@MoSe2 can easily be regenerated under the influence of an external magnetic field, indicating excellent stability and repeatability.
Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Year Published: 2020
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