绿色溶剂制备ZIF-8/PDMS混合基质膜及其优先透醇性能研究
作者： 李张安1,2， 王丰恺1,2， 沈梦鑫1,2， 李杰1,2， 王乃鑫1,2*， 安全福1,2
单位： 1. 北京工业大学，  低碳循环再生全国重点实验室， 北京 100124；
2. 北京工业大学 材料科学与工程学院,      绿色催化与分离北京市重点实验室， 北京 100124
关键词： 优先透醇膜； PDMS； 绿色溶剂； ZIF-8； 渗透汽化膜
DOI号： 10.16159/j.cnki.issn1007-8924.2026.03.006
分类号： TQ028
出版年,卷(期):页码： 2026, 46(3):53-64

摘要：

聚二甲基硅氧烷（PDMS）具有优异的成膜性与疏水性能，在优先透醇的渗透汽化膜中常被用作分离层材料。然而，传统制备PDMS膜的方法中，常采用正庚烷作为溶剂来配制铸膜液，存在环境和安全风险。本研究致力于开发一种简便且绿色溶剂的PDMS复合膜制备新途径，通过PDMS-交联剂分步旋涂技术，实现了绿色、环保的成膜过程。为进一步提升膜的分离性能，在交联剂中引入多孔金属有机框架颗粒（ZIF-8），进而制备出ZIF-8/PDMS混合基质膜，并应用于优先透醇的渗透汽化分离过程。结果表明，在60 ℃条件下，该混合基质膜对质量分数5%乙醇/水混合物具有较好的分离性能，渗透通量为3.3 kg/(m2·h)，分离因子为9.5，并且在96 h的连续运行中展现出良好的稳定性。本研究不仅为PDMS混合基质膜的绿色制备开辟了新路径，也为渗透汽化膜分离技术的可持续发展提供了有力支撑。

Polydimethylsiloxane (PDMS) exhibits excellent membrane-forming properties and hydrophobic characteristics, making it an ideal material for the separation layer in alcohol-preferential pervaporation membranes. However, traditional PDMS membrane preparation processes often rely on organic solvents such as n-heptane for dissolution, which contradicts the principles of green chemistry. This study aims to develop a facile and green solvent approach for the preparation of PDMS composite membranes. The preparation process achieves a green and environmentally friendly membrane-forming process through a stepwise spin-coating technique using PDMS-crosslinking agent. To further enhance the separation performance of the membrane, porous metal-organic framework particles (ZIF-8) were introduced into the crosslinking agent to prepare a ZIF-8/PDMS mixed matrix membrane, which was then applied to the alcohol-preferential pervaporation separation process. Experimental results showed that at 60 ℃, the mixed matrix membrane exhibited excellent separation performance for a 5% ethanol/water mixture, with a permeation flux of 3.3 kg/(m2·h) and a separation factor of 9.5. Furthermore, the membrane demonstrated excellent stability during continuous testing for 96 hours. This study provides a new path for the green preparation of PDMS mixed matrix membranes and strong support for the sustainable development of pervaporation membrane separation technology. 

基金项目：

国家自然科学基金项目（22478012）

作者简介：
第一作者简介： 李张安（2000-），男，北京人，硕士研究生，研究方向为优先透醇渗透汽化膜分离技术.*通讯作者，E-mail: wangnx@bjut.edu.cn

参考文献：

［1］Cheng X Q, Wang Z X, Jiang X, et al. Towards sustainable ultrafast molecular-separation membranes: From conventional polymers to emerging materials ［J］. Prog Mater Sci, 2018, 92: 83-93.
［2］Emirel S E, Li J, Hasan M M F. Membrane separation process design and intensification［J］. Ind Eng ChemRes, 2021, 60(19): 217-239.
［3］Liang B, He X, Hou J, et al. Membrane separation in organic liquid: Technologies, achievements, and opportunities ［J］. Adv Mater, 2018, 31(45): 1-12.
［4］Li Y, Thomas E R, Molina M H, et al. Desalination by membrane pervaporation: A review ［J］. Desalination, 2023, 547(45): 1-10.
［5］Zhou L, Li S, Chen L, et al. MOFs and COFs based pervaporation membranes for alcohols/water separation: A review ［J］. Sep Purif Technol, 2024, 330(45):1-9.
［6］徐国强,余江,王康,等.蒙脱石-聚二甲基硅氧烷复合膜制备及其乙醇/水分离性能［J］.化工学报,2007,58(2):391-395.
［7］李杰,王乃鑫,纪树兰.有机/无机杂化渗透汽化优先透醇膜研究进展［J］.化工进展,2014,33(11):2982-2990.
［8］徐一鸣,别清峰,李云蹊,等.有机聚合物渗透汽化膜研究进展［J］.膜科学与技术,2023,43(3):140-147.
［9］张国军,王乃鑫,李杰,等.乙烯基PDMS/PSf复合膜及其乙醇/水分离性能［J］.膜科学与技术,2016,36(4):103-109.
［10］Zhang Z, Liu Y, Wei X, et al. Engineering antifouling membrane with surface segregation agents bearing crosslinked low surface energy segments ［J］. J Membr Sci, 2024, 691(10): 1-10.
［11］Gan Z, Kong D, Yu Q, et al. Fabrication superhydrophobic composite membranes with hierarchical geometries and low-surface-energy modifications ［J］. Polymer, 2020, 211(8): 1-12.
［12］Chen Y H, Chen G, Lee D J. Synthesis of low surface energy thin film of polyepichlorohydrin-triazole-ols ［J］. J Colloid Interface Sci, 2020, 575: 52-63.
［13］Ong Y K, Shi G M, Le N L, et al. Recent membrane development for pervaporation processes ［J］. Prog Polym Sci,2016,57:1-31.
［14］Liu G, Jin W. Pervaporation membrane materials: Recent trends and perspectives［J］. J Membr Sci, 2021,636 :119557.
［15］Xu Y M, Tang Y P, Chung T S, et al. Polyarylethermembranes for dehydration of ethanol and methanol via pervaporation［J］.Sep Purif Technol, 2018,193:165-174.
［16］彭莉,吴政奇,王博轩,等.TMCS修饰MFI分子筛膜的制备及乙醇/水分离稳定性的研究［J］.化工学报,2021,72(1):569-577.
［17］Peng M, Vane L M, Liu S X. Recent advances in VOCs removal from water by pervaporation ［J］. J Hazard Mater, 2003, 98(1/2/3): 69-80.
［18］Qu Z T, Duan S Y, Li B B, et al. PDMS/PVDF microporous membrane with semi-interpenetrating polymer networks for vacuum membrane distillation ［J］. J Appl Polym Sci, 2017, 135(8): 1-12.
［19］Li J, Pan Y, Ji W, et al. High-flux corrugated PDMS composite membrane fabricated by using nanofiber substrate ［J］. J Membr Sci, 2022, 64(8): 1-12.
［20］Huang J, Hu Y, Bai Y, et al. Novel solar membrane distillation enabled by a PDMS/CNT/PVDF membrane with localized heating ［J］. Desalination, 2020, 48(9): 1-10.
［21］Huang G, Yang Q, Xu Q, et al. Polydimethylsiloxane coating for a palladium/MOF composite: Highly improved catalytic performance by surface hydrophobization［J］. Angew Chem, 2016, 55(26): 7505-7509.
［22］Park E J, Cho Y K, Kim D H, et al. Hydrophobic polydimethylsiloxane (PDMS) coating of mesoporous silica and its use as a preconcentrating agent of gas analytes［J］. Langmuir, 2014, 30(34): 10256-10262.
［23］Lin X, Zhang B, Yang Q, et al. Polydimethysiloxane modified silica nanochannel membrane for hydrophobicity-based molecular filtration and detection［J］. Anal Chem, 2016, 88(15): 7821-7827.
［24］Chang K S, Chung Y C, Yang T H, et al. Free volume and alcohol transport properties of PDMS membranes: Insights of nano-structure and interfacial affinity from molecular modeling ［J］. J Membr Sci, 2012, 417/418: 11-30.
［25］Rsler C, Aijaz A, Turner S, et al. Hollow Zn/Co zeolitic imidazolate framework (ZIF)and yolk-shell metal@Zn/Co ZIF nanostructures ［J］. Chem Eur J, 2016,22(10): 33-41.
［26］Zhao H, Xing Z, Su S, et al. Recent advances in metal organic frame photocatalysts for environment and energy applications ［J］. Appl Mater Today, 2020, 21(20): 1-11.
［27］Liu X, Shan Y, Zhang S, et al. Application of metal organic framework in wastewater treatment ［J］. Green Energy Environ, 2023, 8(3): 698-721.
［28］Duan C, Yu Y, Xiao J, et al. Water-based routes for synthesis of metal-organic frameworks:A review ［J］. Sci China Mater, 2020, 63(5): 67-85.
［29］Peng P,Shi B, Lan Y. Preparation of PDMS-silica nanocompositemembranes with silane coupling for recovering ethanol by pervaporation［J］. Sep Sci Technol, 2011,46(3):420-427.
［30］Sun D, Li B B, Xu Z L.Pervaporation of ethanol/water mixture by organophilic nano-silica filled PDMS composite membranes［J］.Desalination, 2013，322:159-166.
［31］Kustov L. New horizons in zeolites and zeolite-like materials ［J］. Crystals, 2020, 10(8):42-47.
［32］Offeman R D, Ludvik C N. Poisoning of mixed matrix membranes by fermentation components in pervaporation of ethanol［J］. J Membr Sci,2011,367(1/2):288-295.
［33］Zhan X, Lu J, Tan TT, et al. Mixed matrix membranes with HF acid etched ZSM-5 for ethanol/water separation:preparation and pervaporation performance［I］.Appl Surf Sci, 2012, 259:547-556.
［34］Song Y, Lan P C, Martin K, et al. Rational design of bifunctional conjugated microporous polymers ［J］. Nanoscale Adv, 2021, 3(17): 481-506.
［35］Dechnik J, Gascon J, Doonan C J, et al. Mixed-matrix-membranen ［J］.Angew Chem, 2017, 129(32): 39-45.

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