SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (3): 510-515.DOI: 10.1016/j.cjche.2014.06.037

• Separation Science and Engineering • Previous Articles     Next Articles

Sono-assisted preparation of magnetic ferroferric oxide/graphene oxide nanoparticles and application on dye removal

Guodong Jiang1, Qing Chang2, Fufu Yang2, Xiaoyun Hu2, Heqing Tang2   

  1. 1 College of Chemistry and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China;
    2 College of Chemistry and Materials Science, South Central University for Nationalites, Wuhan 430074, China
  • Received:2014-01-07 Revised:2014-06-13 Online:2015-04-03 Published:2015-03-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (21107143, 21207033) and the Fundamental Research Funds for the Central Universities, South-Central University for Nationalities (CZY15003).

Sono-assisted preparation of magnetic ferroferric oxide/graphene oxide nanoparticles and application on dye removal

Guodong Jiang1, Qing Chang2, Fufu Yang2, Xiaoyun Hu2, Heqing Tang2   

  1. 1 College of Chemistry and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China;
    2 College of Chemistry and Materials Science, South Central University for Nationalites, Wuhan 430074, China
  • 通讯作者: Qing Chang, Heqing Tang
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21107143, 21207033) and the Fundamental Research Funds for the Central Universities, South-Central University for Nationalities (CZY15003).

Abstract: A simple ultrasound-assisted co-precipitation method was developed to prepare ferroferric oxide/graphene oxide magnetic nanoparticles (Fe3O4/GO MNPs). The hysteresis loop of Fe3O4/GO MNPs demonstrated that the sample was typical of superparamagnetic material. The samples were characterized by transmission electron microscope, and it is found that the particles are of small size. The Fe3O4/GO MNPs were further used as an adsorbent to remove Rhodamine B. The effects of initial pH of the solution, the dosage of adsorbent, temperature, contact time and the presence of interfering dyes on adsorption performance were investigated as well. The adsorption equilibrium and kinetics data were fitted well with the Freundlich isotherm and the pseudosecond-order kinetic model respectively. The adsorption process followed intra-particle diffusion model with more than one process affecting the adsorption of Rhodamine B. And the adsorption process was endothermic in nature. Furthermore, the magnetic composite with a high adsorption capacity of Rhodamine B could be effectively and simply separated using an external magnetic field. And the used particles could be regenerated and recycled easily. The magnetic composite could find potential applications for the removal of dye pollutants.

Key words: Fe3O4/graphene oxide nanoparticles, Sonochemical synthesis, Adsorption, Kinetic modeling, Equilibrium, Regeneration

摘要: A simple ultrasound-assisted co-precipitation method was developed to prepare ferroferric oxide/graphene oxide magnetic nanoparticles (Fe3O4/GO MNPs). The hysteresis loop of Fe3O4/GO MNPs demonstrated that the sample was typical of superparamagnetic material. The samples were characterized by transmission electron microscope, and it is found that the particles are of small size. The Fe3O4/GO MNPs were further used as an adsorbent to remove Rhodamine B. The effects of initial pH of the solution, the dosage of adsorbent, temperature, contact time and the presence of interfering dyes on adsorption performance were investigated as well. The adsorption equilibrium and kinetics data were fitted well with the Freundlich isotherm and the pseudosecond-order kinetic model respectively. The adsorption process followed intra-particle diffusion model with more than one process affecting the adsorption of Rhodamine B. And the adsorption process was endothermic in nature. Furthermore, the magnetic composite with a high adsorption capacity of Rhodamine B could be effectively and simply separated using an external magnetic field. And the used particles could be regenerated and recycled easily. The magnetic composite could find potential applications for the removal of dye pollutants.

关键词: Fe3O4/graphene oxide nanoparticles, Sonochemical synthesis, Adsorption, Kinetic modeling, Equilibrium, Regeneration