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Study on nanofiltration membranes modified by
 mesoporous silica nanoparticles
Authors： YU Xiaoqi1, WANG Xiaojuan1, SONG Yue1, WANG Xinyan2, 
ZHANG Weizheng2, GAO Xueli1
Units： 1. School of Chemistry and Chemical Engineering, Key Laboratory of Marine Chemistry Theory
 and Technology (Ministry of Education), Ocean University of China, Qingdao 266100, China;
 2. Shandong Zhaojin Motian Co., Ltd., Zhaoyuan 265400, China
KeyWords： interface polymerization; nanofiltration membranes; mesoporous silica nanoparticles; separation performance; anti-fouling performance
ClassificationCode： TQ028.8
year,volume(issue):pagination： 2026, 46(3):65-77

Abstract：

To improve the permeability-selectivity and anti-fouling performance of polyamide nanofiltration (NF) membranes, NF membranes were fabricated via interfacial polymerization (IP) using piperazine (PIP) and trimesoyl chloride (TMC) as monomers, and mesoporous silica nanoparticles (MSN) as the aqueous phase additive. The study systematically investigated the effects of MSN on the diffusion rate of PIP into the organic phase, as well as the microstructure and physicochemical properties of resulting NF membranes. Results demonstrated that the introduction of MSN inhibited the diffusion rate of PIP, inducing the formation of a thinner separation layer while significantly enhancing the surface hydrophilicity, roughness, and negative charges of NF membranes. Specifically, the NF-0.010 membrane exhibited superior permeability, ion sieving performance, and anti-fouling performance. Its water flux increased by 61.37% compared to NF-0 membrane, with the Na2SO4 rejection above 98%. Furthermore, the separation factor for Cl-/SO2-4 increased to 116.86, and the anti-fouling performance against bovine serum albumin (BSA) was significantly enhanced. These findings fully validated that the incorporation of MSN effectively enhanced the comprehensive performance of NF membranes. 

Funds：

山东省重点研发计划项目（2023CXGC010902）； 中国工程科技发展战略山东研究院咨询研究项目（202402SDZD02）； 泰山产业领军人才工程项目（tscx202408154）

AuthorIntro：
第一作者简介： 于小淇（2001-），女，山东临沂人，硕士研究生，研究方向为膜分离.*通讯作者，E-mail：safiya0524@163.com

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