Core–shell TiO2 coated magnetic mesoporous Nanocomposite modified with a surfactant for the removal of methylene blue dye from environmental water samples

Subject Areas :

maryam ezoddin ¹ , laleh adl nasab ²

1 - Assistant Prof. in Department of Chemistry, Payame Noor University, Tehran, Iran
2 - Assistant Prof. in Department of chemistry and Polymer, Faculty of Chemistry and Petrochemical Engineering, Tehran, Iran

Received: 2019-09-22 Accepted : 2020-05-20 Published : 2020-08-22

Keywords: nanocomposite, Removal, Methylene Blue, Sodium Dodecyl Sulfate, Magnetic mesoporous,

Abstract :

In this study, a core–shell TiO2 coated magnetic mesoporous nanocomposite (Fe3O4@MCM@TiO2) was synthesized and modified with an anionic surfactant for the removal of a cationic dye, (methylene blue) from well and wastewater samples. Fe3O4 was loaded on mesopore (MCM-41) and coated with TiO2 as a nano platelet shell. An anionic surfactant, sodium dodecyl sulfate (SDS), was used to modify the adsorbent through hemimicelles/admicelles process and also to prevent the agglomeration of the adsorbent. The surface chemical characteristics and morphology of the prepared Fe3O4@MCM@TiO2were studied by the Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), and Brunauer-Emmett-Teller (BET) analytical techniques. The effect of effective parameters for the removal of methylene blue was also studied. The adsorption data fitted with the Langmuir model showed a short equilibrium time with the maximum capacity uptake of 227.27 mg g-1. This method was successfully applied for removal of methylene blue in environmental water samples with an appropriate recovery in the range of 89.0 and 94.2%.

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