离子液体改性金属-有机骨架复合材料的构筑策略及在环境介质中的应用

费佳颖; 梁艺萱; 李寒冰; 李素梅; 李秭宜; 陈莎

doi:10.13801/j.cnki.fhclxb.20211129.005

离子液体改性金属-有机骨架复合材料的构筑策略及在环境介质中的应用

doi: 10.13801/j.cnki.fhclxb.20211129.005

北京工业大学　环境与生命学部区域大气复合污染防治北京市重点实验室，北京 100124

基金项目: 国家自然基金委创新群体项目(51621003)

详细信息

通讯作者:
陈莎，博士，教授，博士生导师，研究方向为环境污染物的分离、富集与测定及生命周期环境影响评价　E-mail: chensha@bjut.edu.cn

中图分类号: TB33
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出版历程
- 收稿日期: 2021-10-09
- 修回日期: 2021-11-15
- 录用日期: 2021-11-26
- 网络出版日期: 2021-11-30
- 刊出日期: 2022-06-01

Construction strategy of ionic liquid modified metal-organic framework composite and application in environmental medium

Key Laboratory of Beijing on Regional Air Pollution Control, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

摘要

摘要: 金属有机骨架(Metal-organic framework，MOF)是具有较高的孔隙率、比表面积及高度可设计性的新型纳米材料，在吸附分离、固相萃取等诸多领域有着广泛应用。离子液体(Ionic liquid，IL)具有稳定性好、功能可设计的特点，它作为新型绿色溶剂有极大的应用前景。将IL负载到MOF的孔隙中，开发新型离子液体改性金属有机骨架(IL/MOF)复合材料，可以充分发挥两种材料的优势。本文讨论了迄今为止IL/MOF复合材料的所有构筑策略及在大气环境介质中捕集分离CO₂和去除水环境介质中污染物的应用和优势，并对未来IL/MOF复合材料在环境介质中的应用方面进行了总结和展望。
- 金属有机骨架材料 /
- 离子液体 /
- 复合材料 /
- 构筑策略 /
- CO₂捕集分离 /
- 环境污染物
Abstract: Metal-organic framework (MOF) is a new type of nanomaterials with high porosity, specific surface area and high designability, which has been widely used in many fields such as adsorption separation and solid phase extraction. Ionic liquid (IL) have good stability and functional design, which have great application prospects as new green solvents. Loading ILs into the pores of MOFs to develop new IL/MOF composites can give full play to the advantages of the two materials. In this review, we discussed all the construction strategies of IL/MOF composites so far, as well as the application and advantages of CO₂ capturing and separating in atmospheric environment and removing pollutants in water environment. We also summarized and prospected the application of IL/MOF compo-sites in environmental media in the future.
- metal-organic framework /
- ionic liquids /
- composite material /
- construction strategy /
- carbon dioxide capture and separation /
- environment pollutants

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图 1 围绕离子液体(IL)模板排列的金属有机骨架(MOF)-5结晶示意图

Figure 1. Crystallization diagram of metal-organic framework (MOF)-5 around ionic liquid (IL) templates

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图 2 合成IL/MOF复合材料不同的后合成方法：(a)湿浸渍法；(b)毛细管作用法；(c)串联式后合成修饰(或瓶装法)

Figure 2. Different post-synthesis methods of IL/MOF composites: (a) Wet impregnation method; (b) Capillary action method; (c) Bottled method (or serial post-synthesis)

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图 3 HKUST-1内氨基官能化碱性IL催化剂封装的通用方法

Figure 3. Generic procedure for encapsulation of amino-functionalized basic IL catalyst inside HKUST-1

ABIL—Aminoated basic ionic liquid; DMF—N, N dimethylformamide

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图 4 MIL-101(Cr)/2-巯基苯并咪唑离子液体(MBIAILs)的合成策略

Figure 4. Synthesis strategy of MIL-101(Cr)/2-mercaptobenzimidazole ionic liquid (MBIAILs)

MBI—2-Mercaptobenzimidazole

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图 5 IL改性Zr-MOF的制备 (a) 和IL/Zr-MOF的分散固相萃取(DSPE)程序示意图 (b)

Figure 5. Preparation of IL modified Zr-MOF (a) and dispersive solid phase extraction (DSPE) program diagram of IL/Zr-MOF (b)

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图 6 IL-COOH/Fe₃O₄@MOF的制备及MEPE过程

Figure 6. Preparation and MEPE process of IL-COOH/Fe₃O₄@MOF

PDA—Polydopamine; HPLC-DAD—Reversed phase high-performance liquid chromatography

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表 1 关于离子热合成方法文献总结

Table 1. Literature review about ionothermal synthesis

Serial number	IL	MOF	Role of IL	Reference
1	[HMIM]Br	ZIF-8	Solvent, template agent	[29]
2	[Bmim]Br	MOF-5	Template agent	[30]
3	[rmi]X	Mn-MOF	Template agent	[31]
4	[EMIM][HBDC], [EMIM]₂[BDC]	UiO-66	Solvent	[34]
5	[AMI]Br	Co-MOF	Template agent	[35]
6	[BMI]Cl, [AMI]X	Zn-MOF	Template agent	[36]

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表 2 后合成法制备IL/MOF复合材料的文献总结

Table 2. Literature review of IL/MOF composites prepared by post-synthesis method

Serial number	IL	MOF	Synthesis method of IL/MOF	Reference
1	ABIL	HKUST-1	Wet impregnation	[39]
2	ABIL-OH	HKUST-1	Wet impregnation	[57]
3	TSIL	MIL-101(Cr)	Wet impregnation	[40]
4	[BMIM]Cl	MIL-101	Wet impregnation	[41]
5	[OMIM] Br	MIL-100(Fe)	Wet impregnation	[58]
6	[mim(CH₂)₃COOH]Cl	UiO-66	Wet impregnation	[59]
7	[HEMIM] [DCA]	ZIF-8	Wet impregnation	[60]
8	[DPP-NC(3)bim] [PMO]	MIL-101(Al)	Tandem post synthetic modification	[43]
9	MBIAILs	MIL-101(Cr)	Tandem post synthetic modification	[44]
10	BmimOAc	MIL-101-NH₂	Tandem post synthetic modification	[45]
11	BAIL	MIL-101	Tandem post synthetic modification	[46]
12	N(n-Bu)₃Br、 P(n-Bu)₃Br	MIL-101	Tandem post synthetic modification	[47]
13	AmPyI	ZIF-90	Tandem post synthetic modification	[56]
14	EMIMCl	UiO-67(Zr)	Capillary action method	[52]
15	EIMS	MIL-101	Capillary action method	[53]
16	EIMS-HTFSA	MIL-101(Cr)	Capillary action method	[54]
17	EMIM·DCN、EMIM·TCB	MIL-100(Al)	Capillary action method	[55]
18	EMI-TFSA	ZIF-8	Capillary action method	[61]
19	EMI-TFSA	ZIF-8	Capillary action method	[51]
20	AmPyI	ZIF-90	Capillary action method	[56]

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表 3 IL/MOF复合材料合成方法的优缺点比较

Table 3. Comparison of advantages and disadvantages of IL/MOF composite synthesis methods

Name of synthesis method		Merits	Defect
Ionothermal synthesis	Ionothermal synthesis	Process is simple and fast	Selection of MOF and IL is limited and the synthesis failure rate is high
Post synthesis method	Wet impregnation	Synthesis steps are simple and widely used	Synthetic materials can be unstable
	Tandem post synthetic modification	IL larger than the aperture of MOF can enter the MOF hole and the agglomeration of IL can be avoided	Selection of MOF and IL has some limitations
	Capillary action method	No solvent (more environmentally friendly), widely used	Strict selection of IL and MOF

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表 4 MOF材料对CO₂吸附量(实验温度25℃)

Table 4. CO₂ adsorption capacity of MOF(Experimental temperature: 25℃ )

Material	BET/(m²·g⁻¹)	CO₂ adsorption quantity/(mmol·g⁻¹)	Pressure/bar	Reference
Mg-MOF-74	1174	8.61	1	[70]
UMCM-1	4100	23.5	24	[71]
NU-100	6143	46.4	40	[72]
MOF-505	1547	10.2	35	[73]
MOF-210	6240	54.5	50	[74]
MOF-205	4460	38.1	50	[74]
MOF-200	4530	54.5	50	[74]
MIL-101(Cr)	4230	40	50	[75]
MOF-177	4508	33.5	35	[73]
MIL-53(Al)	1300	6.8	25	[76]
HKUST-1	1781	10.7	35	[73]
MOF-5	2833	21.7	35	[73]

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表 5 关于IL/MOF复合材料对CO₂选择性提高的文献总结

Table 5. Literature review on the improvement of CO₂ selectivity of IL/MOF composites

Serial number	IL	MOF	Selectivity	Multiple of CO₂ selectivity increase under the optimal conditions	Reference
1	[Bmim][Ac]	ZIF-8	CO₂/N₂	18	^[95]
2	[BMIM][SCN]	ZIF-8	CO₂/CH₄; CO₂/N₂	2.6; 4	^[96]
3	[HEMIM][DCA]	ZIF-8	CO₂/CH₄	45	^[97]
4	[BMIM][MeSO₄]	MIL-53(Al)	CO₂/CH₄; CO₂/N₂	2; 3	^{[93, 98]}
5	[BMIM][PF₆]	IRMOF-1	CO₂/N₂	70	^[87]
6	[BMIM][PF₆]	ZIF-8	CO₂/N₂	1	^[89]
7	[EMIM][SCN]	IRMOF-1/HMOF-1/MIL-47/MOF-1	CO₂/CH₄; CO₂/N₂	-	^[99]
8	[BMIM][Tf₂N]	ZIF-8	CO₂/CH₄; CO₂/N₂	-	^[99-100]
9	[BMIM][BF₄]	UiO-66/ZIF-8/Cu-BTC	CO₂/N₂	25	^[94]

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