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[1]柯朵 冯俊峰 张晟** 李帮经**.司盘稳定的耐湿性γ-CD-MOF制备及在空气污染领域中的应用*[J].应用与环境生物学报,2019,25(06):1-9.[doi:10.19675/j.cnki.1006-687x.2019.03034]
 KE Duo,FENG Jun-Feng,ZHANG Sheng**& Li Bang-Jing**.Preparation of moisture resistant -CD-MOF stabilized by span and its application in air pollution control *[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1-9.[doi:10.19675/j.cnki.1006-687x.2019.03034]
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司盘稳定的耐湿性γ-CD-MOF制备及在空气污染领域中的应用*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年06期
页码:
1-9
栏目:
研究论文
出版日期:
2019-12-30

文章信息/Info

Title:
Preparation of moisture resistant -CD-MOF stabilized by span and its application in air pollution control *
作者:
柯朵13 冯俊峰1 张晟2** 李帮经1**
1中国科学院成都生物研究所 成都 610041
2四川大学高分子研究所高分子材料工程国家重点实验室 成都 610065
3 中国科学院大学 北京 100049
Author(s):
KE Duo13 FENG Jun-Feng1 ZHANG Sheng2**& Li Bang-Jing1**
1Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
2State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University, Chengdu 610065, China
3University of Chinese Academy of Sciences, Beijing 100049, China
关键词:
环糊精金属有机框架水稳定性环境净化
Keywords:
cyclodextrin metal-organic frameworks water stability environmental purification
DOI:
10.19675/j.cnki.1006-687x.2019.03034
摘要:
基于γ-环糊精的金属有机框架(γ-CD-MOF)在气体储存与分离,药物传递,环境净化及传感等方面都有广阔的应用前景。然而,γ-CD-MOF的水稳定性差阻碍了这种多孔材料的实际应用。因此,增加γ-CD-MOF在潮湿环境的稳定性是其在实际应用中的巨大挑战。利用司盘85极性的羟基端与γ-CD-MOF金属离子的物理吸附作用,通过简单的溶液浸泡工艺在γ-CD-MOF的外表面修饰一层司盘85得到水稳定的γ-CD-MOF。结果显示:在92%相对湿度下暴露25 d 后,司盘85修饰的γ-CD-MOF仍然保持完整的晶体结构和形态,而γ-CD-MOF在相同湿度下暴露1 d 后,其晶体结构已经完全被破坏并失去其固有的多孔性。此外,γ-CD-MOF-SP85能够有效的吸附污染气体CO2及甲醛。上述结果表明疏水的司盘85保护层能够有效的阻止水分子进入γ-CD-MOF框架内,从而提高γ-CD-MOF的耐湿性。这种简单易行的一步法将为制备水稳定的金属有机框架(MOF)开辟一条新的途径。(图8 参22)
Abstract:
γ-cyclodextrin based metal–organic framework (γ-CD-MOF) has proved to be very attractive for applications including gas storage and separation, drug delivery, environmental purification and sensing. However, the poor water stability of γ-CD-MOF hinders the practical application of such porous material. Increasing the resistance to humid environments is a major challenge for the application of γ-CD-MOF in real-world utility. A facile solution-immersion method was developed to enhance the water stability of γ-CD-MOF through external surface modification with span 85 based on the physical adsorption of hydroxyterminal of Span 85 and metal ions in γ-CD-MOF.The results show that γ-CD-MOF-SP85 well remains its crystal structure andmorphology a fter 25 days’ exposure in 92% relative humidity. However, the as-synthesized γ-CD-MOF has nearly collapsed and lose their permanent porosity after exposed the same humidity for 1 day . In addition, γ-CD-MOF-SP85 shows adsorption capacity for carbon dioxide and formaldehyde. The hydrophobic coating provides durable protection of encapsulated γ-CD-MOF crastal againt the attack of water molecules and therefore inproves their water stability.This simply and facile one-step strategy would open a new avenue for preparation of moisture stable MOF.

备注/Memo

备注/Memo:
收稿日期 Received: 2019-03-18 接受日期 Accepted: 2019-05-30
*国家自然科学基金项目(51573187)和高分子材料工程国家重点实验室(2017-2-05)项目资助
**通讯作者Corresponding author (E-mail: libj@cib.ac.cn; zslbj@163.com)
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更新日期/Last Update: 2019-06-19