In-situ growth of ZIF-8/PDMS membrane at the liquid–liquid interface for efficient ethanol recovery

IF 9 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-01-30 DOI:10.1016/j.seppur.2025.131872

Peng Cai , Nai Zhang , Yixian Wang , Jie Li , Naixin Wang , Hong Meng , Quan-Fu An

{"title":"In-situ growth of ZIF-8/PDMS membrane at the liquid–liquid interface for efficient ethanol recovery","authors":"Peng Cai , Nai Zhang , Yixian Wang , Jie Li , Naixin Wang , Hong Meng , Quan-Fu An","doi":"10.1016/j.seppur.2025.131872","DOIUrl":null,"url":null,"abstract":"<div><div>In this work, zeolitic imidazolate framework-8 (ZIF-8) particles were synthesized in situ within polydimethylsiloxane (PDMS) membranes via a liquid–liquid interface. The simultaneous formation of ZIF-8 particles and crosslinking of PDMS at the liquid–liquid interface led to (1) reduced ZIF-8 particle sizes (average 130 nm), (2) improved compatibility, and (3) a protective PDMS layer covering the ZIF-8 particles. Microscopy and spectroscopy confirmed the optimal integration of in-situ grown ZIF-8 within the PDMS matrix. The resulting in-situ ZIF-8/PDMS membrane exhibited excellent pervaporation performance, achieving a high flux of 2.6 kg·m<sup>−2</sup>·h<sup>−1</sup> and a separation factor of 13.1 for a 5 wt% ethanol/water mixture. Importantly, the PDMS layer prevented direct contact between ZIF-8 and the feed, maintaining superior performance over 100 h. The in-situ growth approach via liquid–liquid interface showed great potential for enhanced ethanol recovery.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"362 ","pages":"Article 131872"},"PeriodicalIF":9.0000,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586625004691","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this work, zeolitic imidazolate framework-8 (ZIF-8) particles were synthesized in situ within polydimethylsiloxane (PDMS) membranes via a liquid–liquid interface. The simultaneous formation of ZIF-8 particles and crosslinking of PDMS at the liquid–liquid interface led to (1) reduced ZIF-8 particle sizes (average 130 nm), (2) improved compatibility, and (3) a protective PDMS layer covering the ZIF-8 particles. Microscopy and spectroscopy confirmed the optimal integration of in-situ grown ZIF-8 within the PDMS matrix. The resulting in-situ ZIF-8/PDMS membrane exhibited excellent pervaporation performance, achieving a high flux of 2.6 kg·m⁻²·h⁻¹ and a separation factor of 13.1 for a 5 wt% ethanol/water mixture. Importantly, the PDMS layer prevented direct contact between ZIF-8 and the feed, maintaining superior performance over 100 h. The in-situ growth approach via liquid–liquid interface showed great potential for enhanced ethanol recovery.

Abstract Image

查看原文本刊更多论文

ZIF-8/PDMS膜在液-液界面的原位生长，用于乙醇的高效回收

在本研究中，通过液-液界面在聚二甲基硅氧烷（PDMS）膜内原位合成了沸石咪唑酸骨架-8 （ZIF-8）颗粒。ZIF-8颗粒的同时形成和PDMS在液-液界面的交联导致(1)ZIF-8颗粒尺寸减小（平均130 nm），(2)相容性提高，(3)保护层PDMS覆盖在ZIF-8颗粒上。显微镜和光谱学证实了原位生长的ZIF-8在PDMS基质中的最佳整合。得到的原位ZIF-8/PDMS膜具有优异的渗透蒸发性能，在5 wt%乙醇/水混合物中获得2.6 kg·m−2·h−1的高通量和13.1的分离系数。重要的是，PDMS层防止了ZIF-8与进料之间的直接接触，在100 h以上保持卓越的性能。通过液-液界面原位生长的方法对提高乙醇的回收率具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.