Two-dimensional MOFs ensuring high-efficient pervaporation separation of n-butanol-water system

影响因子：9.0

DOI码：10.1016/j.seppur.2025.133632

发表刊物：Separation and Purification Technology

关键字：2D MOFs Pervaporation Hydrophobic modification Efficient membrane separation

摘要：Pervaporation (PV) is a leading technology for butanol recovery and separation. The exploration of methods to enhance the selectivity and permeability of butanol separation and recovery processes remains a significant challenge. The present study proposes a novel mixed matrix membranes (MMMs) that involves the incorporation of a 2D MOFs modified by silane (P-ZIF-L@PDA) into a polydimethylsiloxane (PDMS) system, with the objective of achieving the expeditious separation of n-butanol in a water system. The porous nature of the filler, coupled with its hydrophobic characteristics, leads to an enhancement in dispersion and compatibility within the PDMS matrix. This structural configuration significantly enhances n-butanol permeation, enabling optimal membrane performance in pervaporation applications. The continuous distribution of 2D MOFs nanomaterials within the membrane matrix creates a unique mass transfer architecture that facilitates a multi-stage molecular masstransfer mechanism. The composite membrane demonstrates exceptional separation efficiency, achieving beta of 48.24 and Jn of 508.7 g center dot m- 2 center dot h- 1 when processing a 1.0 wt% n-butanol aqueous solution at 40 degrees C. Furthermore, incorporation of P-ZIF-L@PDA into the MMMs substantially improves weatherability, ensuring long-term operational stability. The implementation of this silane-modified 2D MOFs as a hydrophobic filler presents a novel design strategy for developing high-performance separation membranes with both selectivity and efficiency for organic compounds.

合写作者：Sun Li,Wang Wei,Yuan Bo,Hu Mingjie

论文类型：期刊论文

通讯作者：Huang Chi*,Pan Yun*

文献类型：J

卷号：374

页面范围：133632

是否译文：否

发表时间：2025-07-04

收录刊物：SCI