| 快速高效去除微囊藻的GO/QPEI复合纳米材料 |
| 摘要点击 1502 全文点击 885 投稿时间：2016-03-09 修订日期：2016-05-05 |
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| 中文关键词 氧化石墨烯纳米复合材料 季铵盐聚乙烯 快速去除 铜绿微囊藻 |
| 英文关键词 graphene oxide nanocomposite quanternary ammonium polyethylenimine fast removal M. aeruginosa |
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| 中文摘要 |
| 本研究合成了一种新型高效的去除铜绿微囊藻（Microcystis aeruginosa）的氧化石墨烯/季铵盐聚乙烯亚胺（GO/QPEI）纳米复合材料. GO/QPEI在pH为4~10的条件下都具有高效去除M. aeruginosa的能力，其去除能力在2 min内可达96%以上. GO/QPEI对微囊藻的吸附更符合Freundlich方程，最大吸附量为5.58×1011 cells·mg-1. 吸附动力学表明GO/QPEI的假二级吸附反应. GO纳米片和QPEI的协同效应是其高效去除微囊藻的主要机制. |
| 英文摘要 |
| This work described the synthesis of graphene oxide/quanternary ammonium polyethylenimine (GO/QPEI) nanocomposite as a novel and highly efficient Microcystis aeruginosa (M. aeruginosa) removal material. From pH 4 to 10, the removal efficiency of M. aeruginosa by GO/QPEI in 2 min was over 96%. The adsorption isotherm fitted the Freundlich model better and the maximum capacity of GO/QPEI was 5.58×1011 cells·mg-1. The kinetic data supported a pseudo-second-order adsorption behavior for GO/QPEI. The enhanced removal of M. aeruginosa could be attributed to the synergistic effect of GO nanosheet and the grafted QPEI. |
