文献类型：期刊文献

英文题名：Abrasion-resistant polyethersulfone/Al2O3 membranes with excellent permeability: Fabrication, evaluation, and molecular dynamics simulation

作者：Gao, Shiyu[1];Mu, Liuhua[2];Yang, Haijun[3];Zhou, Binjie[1];Fang, Haiping[1];Sheng, Shiqi[1]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China;[3]Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

年份：2025

卷号：72

外文期刊名：JOURNAL OF WATER PROCESS ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001456793700001)】；

基金：This work was supported by the National Natural Science Foundation of China (12005062, 12405036, and 12435001) and the Fundamental Research Funds for the Central Universities of East China University of Science and Technology.

语种：英文

外文关键词：Abrasion resistance; Al2O3 nanoparticle; Embedded nanoparticle; Hybrid membrane; Molecular dynamics simulation; Permeability

摘要：Extending the membrane lifespan against abrasion and improving the membrane filtering performance in an economical and widely applicable manner remain urgent demand. Herein, by employing a one-step spray-sediment method, we prepared an abrasive-resistant polyethersulfone (PES)/Al2O3 hybrid membrane with excellent permeability, assisted by the Al2O3 nanoparticles, which are concentratedly embedded in the top surface. The water flux and BSA solution flux of the PES/Al2O3 hybrid membranes were increased by as high as similar to 80 % and similar to 27.0 %, respectively, at the Al2O3 loading ratio of merely 0.5-0.6 wt%, while the BSA rejection rate kept at a high level (similar to 88 %). The flux recovery rate was increased from 63.3 % to 70.5 % at the loading ratio of 0.8 wt%. Remarkably, the PES/Al2O3 hybrid membrane possessed excellent enhancement of abrasion resistance against the grinding of silicon carbide sandpaper, possessing a reduction of weight loss as high as 75.6 % in the initial 50 abrasion cycles. Molecular dynamics simulations revealed that the improved permeability can be attributed to the porous area of the particle-polymer bound layer formed by the nanoparticles embedded in the membrane's skin layer. Our findings highlight a simple and cost-effective one-step spray-sediment method suitable for the large-scale industrial fabrication of abrasive-resistant membranes with high performance, as well as provide physical insights into the improved membrane permeability.