A facile chemical method to produce superparamagnetic graphene oxide–Fe3O4 hybrid composite and its application in the removal of dyes from aqueous solution
By Guoqiang Xie, Pinxian Xi, Hongyan Liu, Fengjuan Chen, Liang Huang, Yanjun Shi, Fengping Hou, Z. Zeng, Changwei Shao, Jun Wang. 2012
320 citations recorded by the source corpus.
A superparamagnetic graphene oxide–Fe3O4 hybrid composite (GO–Fe3O4) was prepared via a simple and effective chemical method. Amino-functionalized Fe3O4 (NH2-Fe3O4) particles are firmly deposited on the graphene oxide sheets. The graphene oxide sheets could prevent NH2-Fe3O4 particles from agglomeration and enable a good dispersion of these oxide particles. The as-prepared GO–Fe3O4 hybrid composite had a much higher thermal stability than graphene oxide. The amount of NH2-Fe3O4 loaded on GO was estimated to be 23.6 wt% by atomic absorption spectrometry. The specific saturation magnetization (Ms) of the GO–Fe3O4 hybrid composite is 15 emu g−1. The magnetic GO–Fe3O4 composite has been employed as adsorbent for the magnetic separation of dye contaminants from water. The adsorption test of dyes (Methylene Blue (MB) and Neutral Red (NR)) demonstrates that it only takes 30 min for MB and 90 min for NR to attain equilibrium. The adsorption capacities for MB and NR in the concentration range studied are 167.2 and 171.3 mg g−1, respectively. The GO–Fe3O4 hybrid composite can be easily manipulated in magnetic field for desired separation, leading to the removal of dyes from polluted water. These GO–Fe3O4 hybrid composites have great potential applications in removing organic dyes from polluted water.
Subfields: Biomedical Engineering, Materials Chemistry, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/a032179aed75489b9f6e184d8f3cddbbbb7864d5
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Citations in the corpus
- Adsorptive remediation of environmental pollutants using novel graphene-based nanomaterials (2013, background): “2 (25 C) [105]”
- Simultaneous removal of Cd(II) and ionic dyes from aqueous solution using magnetic graphene oxide nanocomposite as an adsorbent (2013, background): “Recently, a few researchers focused on MGO adsorbents for removing dyes [21,23,29,30] or heavy metal ions [4,31–33].”