Synthesis of magnetic yolk-shell mesoporous carbon architecture for the effective adsorption of sulfamethazine drug

• DOI: 10.1016/j.micromeso.2017.07.027
• Publication Date: 2017-07-16T02:45:15Z
• Authors: Ijaz Hussain; Yang Li; Junwen Qi; Jiansheng Li; Xiuyun Sun; Jinyou Shen; Weiqing Han; Lianjun Wang
• Keywords: Carbon fibers

Abstract In this work, Fe3O4@C yolk-shell carbon architecture were fabricated in one pot sol-gel process and further examined as adsorbents for the removal of sulfamethazine. To understand yolk-shell structure on the adsorption properties of sulfamethazine, another adsorbent without hollow cavity, i.e., Fe3O4@SiO2@C carbon material, was also prepared for comparison. The adsorption results showed the yolk-shell carbon materials complied with the pseudo-second order kinetics model. Based on the Langmuir model the yolk shell material possess a Qmax of 312 mg g−1, which is higher than that of core-shell materials (236 mg g−1). Due to the magnetic property, the yolk-shell carbon materials can be retrieved facilely from the aqueous media by an external magnet and 89.1% of recovery can be achieved over five adsorption desorption cycles. Possessing high surface area, a well-defined interface of the material and central cavity the as-prepared material has proved to be a potentially eminent adsorbent for the broad scale removal of sulfamethazine from industrial processes.