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Fabrication and adsorption properties of novel magnetic graphene oxide composites for removal of methylene blue

机译：新型磁性石墨烯复合材料去除亚甲基蓝石墨烯复合材料的制造及吸附性能

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摘要

The hybrid material of magnetic graphene oxide (MNPs/GO) was prepared with a facile route and adsorption properties for removal of methylene blue (MB) were investigated. Initially, the surface of magnetic nanoparticles (MNPs) was modified with poly(glycidyl methacrylate) by the surface-initiated reversible addition fragmentation chain transfer (RAFT) polymerization. The modified MNPs and graphene oxide (GO) were fabricated to form MNPs/GO in N, N-dimethylformamide at 60 degrees C. The composites were characterized by using XRD, SEM, TEM, and vibrating sample magnetometry analyses. The adsorptive removal of MB on the adsorbent obeyed a pseudo-second-order kinetic whose equilibrium data were fitted well to the Langmuir isotherm model and the maximum MB uptake of MNPs/GO was estimated from this model to be 153.85 mg/g. MNPs/GO adsorbent could be recycled and maintained 75.3% of its initial adsorption capacity for MB after five regeneration cycles.
机译：用容量途径制备磁性石墨烯（MNPS / GO）的杂化材料，并研究了除去亚甲基蓝（MB）的吸附性能。 最初，通过表面引发的可逆添加碎片链转移（筏）聚合，用聚（甲基丙烯酸缩水甘油酯）改性磁性纳米颗粒（MNP）的表面。 制备改性的MNP和石墨烯（GO）以在60℃下形成MnPS / Go，N-二甲基甲酰胺。通过使用XRD，SEM，TEM和振动样品磁力分析来表征复合材料。 吸附剂上的MB的吸附除去伪尺度动力学，其平衡数据均匀地对Langmuir等温线模型进行良好，并且从该模型估算MnPS / Go的最大MB摄取为153.85mg / g。 在五个再生循环后，可以再循环并将MnP / Go吸附剂再循环并维持75.3％的MB初始吸附能力。

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