| Fe3O4@Mg(OH)2复合材料的制备及对铅离子吸附的应用 |
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| 引用本文： | 韩文生,时东,张禹泽,李娜,宋福根,李丽娟.Fe3O4@Mg(OH)2复合材料的制备及对铅离子吸附的应用[J].盐湖研究,2019,27(3). |
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| 作者姓名： | 韩文生 时东 张禹泽 李娜 宋福根 李丽娟 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所 |
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| 基金项目： | 青海省科技厅基金（2016-GX-145） |
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| 摘 要： | 通过共沉淀法制备出Fe3O4@Mg(OH)2复合材料并进行了XRD、SEM、TEM、SAED测试分析。将复合材料对水溶液中Pb2+的吸附时，接触时间240分钟时达到吸附平衡。平衡时，水溶液中的Pb2+超过90%被吸附，吸附量为950.8 mg/g。通过动力学研究发现，吸附过程符合准二级动力学模型意味着意味着吸附过程中可能为化学吸附过程。
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| 关 键 词： | 铅离子、废水、复合材料、吸附动力学 |
| 收稿时间： | 2018/1/26 0:00:00 |
| 修稿时间： | 2018/3/3 0:00:00 |
Preparation of Fe3O4@Mg(OH)2 Composite and Its Application to Adsorb Lead Ions |
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| Affiliation: | Qinghai Institute of Salt Lake, Chinese Academy of Science,Qinghai Institute of Salt Lake, Chinese Academy of Science,Qinghai Institute of Salt Lake, Chinese Academy of Science,Qinghai Institute of Salt Lake, Chinese Academy of Science,Qinghai Institute of Salt Lake, Chinese Academy of Science,Qinghai Institute of Salt Lake, Chinese Academy of Science |
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| Abstract: | A kind of novel composites Fe3O4@Mg(OH)2 were prepared by coprecipitation method in this paper. We analyzed their structures by XRD, SEM, TEM and SAED, and mainly researched on the composites` adsorption property for the Pb2+ ions in aqueous solutions. The results indicate that the adsorption equilibrium could be achieved when the contact time over 240 minutes, and the adsorption efficient for the Pb2+ ions was more than 90%, with a high adsorption capacity as 950.8 mg/g, and that the adsorption kinetic process conformed to the quasi-two kinetic model suggesting that the adsorption process might be a chemical one. All in all, their extraordinary adsorption property determines that the composites prepared might potentially serve as a bright agent for the Pb2+ ions disposal in aqueous solutions. |
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