A Generalized Method for the Synthesis of Carbon-Encapsulated Fe 3 O 4 Composites and Its Application in Water Treatment.
Shengxia DuanJian LiuYanling PangFeng LinXiangyan MengKe TangJiaxing LiPublished in: Molecules (Basel, Switzerland) (2022)
In this paper, a simple and environmentally friendly method was developed for the preparation of highly stable C@Fe 3 O 4 composites with controllable morphologies using sodium alginate as the carbon source and the easily obtained α-Fe 2 O 3 as the precursors. The morphologies of the as-prepared C@Fe 3 O 4 composites, inherited from their corresponding precursors of α-Fe 2 O 3 , 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@Fe 3 O 4 composites resisted to oxidation, acidification and aggregation, exhibiting porous structures and ferromagnetic properties at room temperature. Moreover, the adsorption performance of the C@Fe 3 O 4 composites was evaluated by absorbing MB (methylene blue) in liquid environment. Experiments indicated that the C@Fe 3 O 4 composites exhibited highly enhanced adsorption capacities and efficiencies as compared with their corresponding precursors of α-Fe 2 O 3 . This generalized method for the synthesis of C@Fe 3 O 4 composites provides promising applications for the highly efficient removal of MB from industrial effluents.
Keyphrases
- electron microscopy
- reduced graphene oxide
- aqueous solution
- room temperature
- highly efficient
- high resolution
- visible light
- ionic liquid
- wastewater treatment
- heavy metals
- computed tomography
- solid state
- magnetic resonance
- nitric oxide
- tissue engineering
- single molecule
- hydrogen peroxide
- smoking cessation
- combination therapy
- high performance liquid chromatography
- simultaneous determination
- wound healing