A Generalized Method for the Synthesis of Carbon-Encapsulated Fe3O4 Composites and Its Application in Water Treatment

In this paper, a simple and environmentally friendly method was developed for the preparation of highly stable C@Fe3O4 composites with controllable morphologies using sodium alginate as the carbon source and the easily obtained α-Fe2O3 as the precursors. The morphologies of the as-prepared C@Fe3O4 c...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-10, Vol.27 (20), p.6812
Main Authors: Duan, Shengxia, Liu, Jian, Pang, Yanling, Lin, Feng, Meng, Xiangyan, Tang, Ke, Li, Jiaxing
Format: Article
Language:English
Subjects:
Acidification
Adsorbents
Adsorption
Alginic acid
Aqueous solutions
Atomic emission spectroscopy
C@Fe3O4 composites
Carbon
Carbon sources
Composite materials
Controllability
Efficiency
Electron microscopy
Emission analysis
Emission spectroscopy
Ferric oxide
ferromagnetic
Ferromagnetism
Graphene
Inductively coupled plasma
Industrial effluents
Industrial wastewater
Iron oxides
Magnetic fields
MB adsorption
Methylene blue
Morphology
Nanoparticles
Oxidation
Precursors
Room temperature
Scanning electron microscopy
Sodium alginate
Spectroscopy
Textiles
Transmission electron microscopy
Water treatment
X-ray diffraction
α-Fe2O3
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Summary:In this paper, a simple and environmentally friendly method was developed for the preparation of highly stable C@Fe3O4 composites with controllable morphologies using sodium alginate as the carbon source and the easily obtained α-Fe2O3 as the precursors. The morphologies of the as-prepared C@Fe3O4 composites, inherited from their corresponding precursors of α-Fe2O3, survived from the annealing treatments, were characterized by the field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The C@Fe3O4 composites resisted to oxidation, acidification and aggregation, exhibiting porous structures and ferromagnetic properties at room temperature. Moreover, the adsorption performance of the C@Fe3O4 composites was evaluated by absorbing MB (methylene blue) in liquid environment. Experiments indicated that the C@Fe3O4 composites exhibited highly enhanced adsorption capacities and efficiencies as compared with their corresponding precursors of α-Fe2O3. This generalized method for the synthesis of C@Fe3O4 composites provides promising applications for the highly efficient removal of MB from industrial effluents.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27206812