基于选择性吸附实现有机染料分离的一种金属有机框架薄膜材料制备与表征

doi:10.16085/j.issn.1000-6613.2018-0724

化工进展 ›› 2019, Vol. 38 ›› Issue (02): 1010-1017.DOI: 10.16085/j.issn.1000-6613.2018-0724

基于选择性吸附实现有机染料分离的一种金属有机框架薄膜材料制备与表征

邢以晶(),李赏,朱从懿,郭伟()

武汉理工大学材料复合新技术国家重点实验室，湖北武汉 430070

收稿日期:2018-04-09 修回日期:2018-10-19 出版日期:2019-02-05 发布日期:2019-02-05
通讯作者: 郭伟
作者简介:<named-content content-type="corresp-name">邢以晶</named-content>（1991—），女，硕士研究生，研究方向为MOF和SURMOF的制备。E-mail：<email>xingyijing@whut.edu.cn</email>。|郭伟，助理研究员，研究方向为MOF材料研究。E-mail：<email>guowei2016@whut.edu.cn</email>。
基金资助:
国家自然科学基金青年科学基金(21706200)

Dye separation based on selective adsorption by used a SURMOF thin film: the preparation and characterization

Yijing XING(),Shang LI,Congyi ZHU,Wei GUO()

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing，Wuhan University of Technology，Wuhan 43007，Hubei，China

Received:2018-04-09 Revised:2018-10-19 Online:2019-02-05 Published:2019-02-05
Contact: Wei GUO

摘要/Abstract

摘要：

采用层层喷涂法（layer-by-layer），在经过16-巯基十六烷基酸（—COOH基团）表面处理的镀金硅基体表面，定向生长了一种金属有机框架薄膜材料（HKUST-1 SURMOF），并利用XRD、SEM等分析手段表征其结构和形貌，同时利用动态UV-vis技术分析该薄膜材料选择性吸附亚甲基蓝（MB）和核固红（NFR）染料分子能力。实验结果表明：在MB和NFR的混合溶液中，HKUST-1 SURMOF薄膜可以对含有噻嗪结构的MB分子显示出较强的选择性吸附能力，而很难吸附不含噻嗪结构的NFR分子，基于上述现象可以利用这种新型薄膜材料实现有机染料的选择性分离。

关键词: 选择性吸附, 金属有机框架材料, 染料分子, 分离

Abstract:

A layer-by-layer method was employed for the synthesis of the HKUST-1 which deposition on functionalized organic surfaces（HKUST-1 SURMOF）. The XRD and SEM techniques were used to investigated the morphologies and structures of the SURMOF, the UV-vis technique was used to investigated the capacity of selective adsorption of dye molecules of type methylene blue （MB） and nuclear fast red （NFR）. It can be assumed that the different adsorption behavior of MB and NFR was caused by the different chemical structure. It might be assumed that the pyridyl moiety of the MB dye strongly adsorbed with HKUST-1 structure， while NFR did not build such interaction. While most of the MB molecules were removed from the mixture， the NFR molecules remained in the solution.

Key words: selective adsorption, MOFs, dye molecules, separation

中图分类号:

0647

邢以晶, 李赏, 朱从懿, 郭伟. 基于选择性吸附实现有机染料分离的一种金属有机框架薄膜材料制备与表征[J]. 化工进展, 2019, 38(02): 1010-1017.

Yijing XING, Shang LI, Congyi ZHU, Wei GUO. Dye separation based on selective adsorption by used a SURMOF thin film: the preparation and characterization[J]. Chemical Industry and Engineering Progress, 2019, 38(02): 1010-1017.

图/表 6

图1 35个循环制备的HKUST-1 SURMOF的SEM图像

图2 不同染料溶液中SURMOF薄膜XRD的变化

图3 HKUST-1吸附染料分子前后的光学照片及紫外可见光谱

图4 HKUST-1吸附不同染料分子溶液的紫外可见吸收光谱图

图5 HKUST-1吸附不同比例混合溶液染料分子前后的光学照片及紫外可见光谱

图6 HKUST-1吸附混合染料溶液时浓度随时间的变化

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基于选择性吸附实现有机染料分离的一种金属有机框架薄膜材料制备与表征

Dye separation based on selective adsorption by used a SURMOF thin film: the preparation and characterization

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