Preparation of magnetic polyimide@ Mg-Fe layered double hydroxides core-shell composite for effective removal of various organic contaminants from aqueous solution
文献类型：期刊论文
| 作者 | Wu, Hanjun; Zhang, Huali; Zhang, Weijun; Yang, Xiaofang ; Zhou, Hong; Pan, Zhiquan; Wang, Dongsheng
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| 刊名 | CHEMOSPHERE
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| 出版日期 | 2019-03 |
| 卷号 | 219页码:66-75 |
| 关键词 | Adsoption behavior Core-shell structure Magnetic polyimide@ layered double oxides composites Organic contaminants Regeneration |
| ISSN号 | 0045-6535 |
| 英文摘要 | In this work, a novel core-shell structured magnetic polyimide@layered double oxides (LDO) composites coating a porous polyimide (PO-coated Fe3O4 magnetic core and layered double hydroxide (LDH) has been successfully synthesized by solve-thermal synthesis and co-precipitation process. The magnetic PI@LDO composites were characterized by scanning and transmission electron microscopy (SEM and TEM), X-ray diffraction (XRD), thermogravimetry analysis (TGA) and magnetic properties analysis. The composite materials displayed core-shell structure with flower-like morphology. The magnetic PI@LDO composites were applied to remove tetracycline (TC), 2,4-dichlorophenol (2,4-DCP) and glyphosate (GP) from aqueous solution. The action pH value was ranged from 5 to 9 for TC and GP and 3 to 7 for 2,4-DCP, respectively. Cl- showed a weak competitive adsorption effect to TC, 2, 4-DCP and GP. In addition, the presence of humic acid (HA) could slightly reduce the adsorption capacity of magnetic PI@LDO composites. The adsorption process could be well described by pseudo-second-order model for TC and GP, while pseudo-first-order model for 2,4-DCP. The experimental data of TC and 2,4-DCP could be fitted better with Freundlich model, while that of GP were fitted better with Langmuir model. The adsorptions of TC, 2,4-DCP and GP were both spontaneous and endothermic. The adsorption capacity decreased slightly after adsorption-desorption cycles repeated five times. This study demonstrated that magnetic PI@LDO exhibited great potential to be a mild and cost-effective adsorbent for the removal of various organic contaminants from wastewater. (C) 2018 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/43107]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 3.China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China 4.Wuhan Inst Technol, Sch Chem & Environm Engn, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hanjun,Zhang, Huali,Zhang, Weijun,et al. Preparation of magnetic polyimide@ Mg-Fe layered double hydroxides core-shell composite for effective removal of various organic contaminants from aqueous solution[J]. CHEMOSPHERE,2019,219:66-75. |
| APA | Wu, Hanjun.,Zhang, Huali.,Zhang, Weijun.,Yang, Xiaofang.,Zhou, Hong.,...&Wang, Dongsheng.(2019).Preparation of magnetic polyimide@ Mg-Fe layered double hydroxides core-shell composite for effective removal of various organic contaminants from aqueous solution.CHEMOSPHERE,219,66-75. |
| MLA | Wu, Hanjun,et al."Preparation of magnetic polyimide@ Mg-Fe layered double hydroxides core-shell composite for effective removal of various organic contaminants from aqueous solution".CHEMOSPHERE 219(2019):66-75. |
入库方式： OAI收割
来源：生态环境研究中心
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