Work

Superior polyethylene based total heat exchange membranes made from sealing polyamide separating layers with in situ grown ZIF-8 particles

Year: 2025

Type: article

Abstract: A cross substrate counter diffusion (CSCD) process between the solutions of Zn(II) solution and 2-methyl imidazole (2-MIM)-ammonia solution (pH = 10) to in situ grow ZIF-8 particles was developed to enhance the performance of polyamide (PA)/polyethylene(PE) based thin film composite (TFC) total heat exchange membranes (THEMs). In situ grown ZIF particles from CSCD processes had effectively blocked CO 2 leakages across the PA separating layer by sealing the defect points, and provided selective water vapor permeating channels and surface area to enhance energy recovery efficiencies. The effects of Zn(II) loading concentration, CSCD reaction time and ligand type on the structure, CO 2 barrier property and heat exchange efficiencies were systematically investigated. Under optimized conditions, sealing with ZIF-8 particles could decrease the CO 2 permeance from 7.5 GPU to 1.15 GPU, at the same time, increase the sensible heat, latent heat and heat exchange efficiencies from 80 %, 53 %, 68 % to 96 %, 73 % and 82 % respectively.

Source: Materials Science for Energy Technologies

DOI: 10.1016/j.mset.2025.06.001

Authors: Mengyao Chen, Jiajia Gui, Huimin Wang, Jiaju Wang, Fei Huang, Lixin Xue

Institutions: Wenzhou University, Zhejiang University of Technology

Language: English

Topic: Membrane Separation and Gas Transport

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $840