Polyethylenimine modified magnetic graphene oxide nanocomposites for Cu2+ removal

Sui Ning; Wang Lina; Wu Xiaohan; Li Xinghua; Sui Jing; Xiao Hailian; Liu Manhong; Wan Jun; Yu William W.

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Polyethylenimine modified magnetic graphene oxide nanocomposites for Cu2+ removal

机译：聚乙烯亚胺改性的磁性氧化石墨烯纳米复合材料用于去除Cu2 +

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Fe3O4 nanoparticles were synthesized on graphene oxide (GO), then mixed with polyethylenimine to obtain GO/Fe3O4/PEI nanocomposites. Due to the high surface area of GO, superparamagnetism of Fe3O4, and excellent complex ability of PEI, the nanocomposites showed extremely high Cu2+ removal efficiency. The Cu2+ removal capacity was 157 mg g(-1), which is higher than most reported results. The adsorption kinetics could be best described by a pseudo-second-order model. Moreover, GO/Fe3O4/PEI nanocomposites could be easily recycled by magnetic separation. After five cycles, the removal efficiency remained 84%.

机译：在氧化石墨烯（GO）上合成Fe3O4纳米粒子，然后与聚乙烯亚胺混合以获得GO / Fe3O4 / PEI纳米复合材料。由于GO的高表面积，Fe3O4的超顺磁性和PEI的出色的复合能力，纳米复合材料显示出极高的Cu2 +去除效率。 Cu2 +的去除能力为157 mg g（-1），高于大多数报道的结果。吸附动力学可以用伪二级模型来最好地描述。此外，GO / Fe3O4 / PEI纳米复合材料可通过磁分离轻松回收。在五个循环之后，去除效率保持84％。

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《RSC Advances》 |2015年第1期|共7页
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Sui Ning; Wang Lina; Wu Xiaohan; Li Xinghua; Sui Jing; Xiao Hailian; Liu Manhong; Wan Jun; Yu William W.;
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正文语种 eng
中图分类化学;
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1. Polyethylenimine modified magnetic graphene oxide nanocomposites for Cu2+ removal [J] . Sui Ning, Wang Lina, Wu Xiaohan, RSC Advances . 2015,第1期

机译：聚乙烯亚胺改性的磁性氧化石墨烯纳米复合材料用于去除Cu2 +
2. A comparative study of magnetic chitosan (Chi@Fe3O4) and graphene oxide modified magnetic chitosan (Chi@Fe(3)O(4)GO) nanocomposites for efficient removal of Cr(VI) from water [J] . Subedi Nabin, Lande Anna, Abu-Danso Emmanuel, International Journal of Biological Macromolecules: Structure, Function and Interactions . 2019,第期

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机译：磁性壳聚糖（CHI @ FE3O4）和石墨烯改性磁性壳聚糖（CHI @ FE3O4GO）纳米复合材料的比较研究，用于高效除去水的CR（VI）

Polyethylenimine modified magnetic graphene oxide nanocomposites for Cu2+ removal

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