Fabrication of rGO/Fe3O4 Magnetic Composite for the Adsorption of Anthraquinone-2-Sulfonate in Water Phase
| Autor: | Mei-Xi Li, Shanshan Yang, Nanqi Ren, Ya-Ni Zang, Jie Ding, Shuang-Yang Zhao, Yan Zhao, Xin-Lei Gao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Materials science Geography Planning and Development Aquatic Science Biochemistry Anthraquinone law.invention chemistry.chemical_compound symbols.namesake Adsorption law anthraquinone-2-sulfonate Fourier transform infrared spectroscopy TD201-500 Water Science and Technology Water supply for domestic and industrial purposes Graphene Aqueous two-phase system Langmuir adsorption model Hydraulic engineering magnetic composite Solvent chemistry Chemical engineering adsorption regeneration symbols TC1-978 |
| Zdroj: | Water, Vol 13, Iss 2315, p 2315 (2021) Water Volume 13 Issue 17 |
| ISSN: | 2073-4441 |
| Popis: | In the last few decades, anthraquinone and its derivatives (AQs) have been intensively applied to electrochemical, textile and dye, and photovoltaic industries. This has increased the levels of AQs in the natural environment and threatens human health. To remove AQs from the aqueous phase and recover these multi-functional molecules, a binary magnetic adsorbent, reduced graphene/Fe3O4 (rGO/Fe3O4), was synthesized via a hydrothermal method. Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman spectra, and thermogravimetric analysis (TGA) were then used to characterize the samples. The adsorption capacities of rGO/Fe3O4 to AQs were investigated by selecting anthraquinone-2-sulfonate (AQ2S) as a model molecule. The adsorption process followed the Langmuir adsorption isotherm and the second-order kinetics. The regeneration of adsorbents and the recycling of AQ2S and solvent were simultaneously achieved by Soxhlet extraction and rotary evaporation. These results confirm the high adsorption efficiency of rGO/Fe3O4 for removing AQs from water and provide a promising approach to recover the valuable molecules from the aqueous phase. |
| Databáze: | OpenAIRE |
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