| 全氟酰基合成后修饰UiO-66用于吸附有机污染物 |
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| 引用本文： | 许梦颖,宋甘霖,韩宝航.全氟酰基合成后修饰UiO-66用于吸附有机污染物[J].无机化学学报,2019,35(11):2136-2144. |
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| 作者姓名： | 许梦颖 宋甘霖 韩宝航 |
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| 作者单位： | 国家纳米科学中心, 中国科学院纳米科学卓越创新中心, 中国科学院纳米系统与多级次制造重点实验室, 北京 100190;中国科学院大学, 北京 100049,国家纳米科学中心, 中国科学院纳米科学卓越创新中心, 中国科学院纳米系统与多级次制造重点实验室, 北京 100190;中国科学院大学, 北京 100049,国家纳米科学中心, 中国科学院纳米科学卓越创新中心, 中国科学院纳米系统与多级次制造重点实验室, 北京 100190;中国科学院大学, 北京 100049 |
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| 基金项目： | 国家自然科学基金（No.21574032）资助项目 |
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| 摘 要： | 以三氟乙酰基和五氟丙酰基为修饰官能团，通过合成后修饰（PSM）的方法对金属-有机骨架（MOFs）改性，得到疏水骨架材料（UiO-66-F1和UiO-66-F2）。2个骨架材料均显示出亲油性，这说明它们是油性溶剂潜在的吸附材料。修饰后MOFs材料的结晶性、稳定性和多孔性较UiO-66-NH2仅有微小降低。UiO-66-F1和UiO-66-F2的Brunauer-Emmett-Teller（BET）比表面积分别为810和610 m2·g-1。骨架材料因其合适的孔大小和疏水微环境，更容易吸附水中的有机污染物。此外，改性后材料对多种有机溶剂的吸附量显著提升，在经过10次的循环吸附后吸附量没有明显降低，具有出色的循环稳定性。
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| 关 键 词： | 金属-有机框架 合成后修饰 全氟烷基链 吸附 |
| 收稿时间： | 2019/8/19 0:00:00 |
| 修稿时间： | 2019/10/6 0:00:00 |
Postsynthetic Modification of UiO-66 with Perfluoroalkyl for Adsorbing Organic Pollutants |
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| XU Meng-Ying,SONG Gan-Lin and HAN Bao-Hang.Postsynthetic Modification of UiO-66 with Perfluoroalkyl for Adsorbing Organic Pollutants[J].Chinese Journal of Inorganic Chemistry,2019,35(11):2136-2144. |
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| Authors: | XU Meng-Ying SONG Gan-Lin and HAN Bao-Hang |
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| Institution: | CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Science, Beijing 100049, China,CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Science, Beijing 100049, China and CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China;University of Chinese Academy of Science, Beijing 100049, China |
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| Abstract: | Through postsynthetic modification (PSM) of metal-organic frameworks with perfluoroacetyl and perfluoropropionyl as functional groups, hydrophobic frameworks (UiO-66-F1 and UiO-66-F2) were obtained. Both frameworks exhibited lipophilicity, which indicates that they are potential absorbents for liposoluble solvent. The crystallinity, stability, and exceptional porosity of modified MOFs decreased slightly compared to those of UiO-66-NH2. Their Brunauer-Emmett-Teller (BET) specific surface areas were 810 and 610 m2·g-1 for UiO-66-F1 and UiO-66-F2, respectively. Suitable pore size and hydrophobic microenvironment made the frameworks easier to adsorb organic pollutants in water. Furthermore, they showed an obvious increase in adsorption capacity for a variety of organic solvents and endowed outstanding recycling performance without a significant reduction in adsorption capacity after recycle ten times. |
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| Keywords: | MOFs postsynthetic modification perfluoroalkyl adsorption |
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