Novel mixed matrix membranes based on polyelectrolyte complex modified with fullerene derivatives for enhanced pervaporation and nanofiltration

被引：0

作者：

Dmitrenko M.E. ^{[1
]}

Kuzminova A.I. ^{[1
]}

Zolotarev A.A. ^{[1
]}

Korniak A.S. ^{[1
]}

Ermakov S.S. ^{[1
]}

Su R. ^{[2
]}

Penkova A.V. ^{[1
]}

机构：

[1] St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg

[2] State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin

来源：

Separation and Purification Technology | 2022年 / 298卷

基金：

俄罗斯科学基金会;

关键词：

Carboxymethyl cellulose; Fullerene derivatives; Nanofiltration; Pervaporation; Polyelectrolyte complex;

D O I：

10.1016/j.seppur.2022.121649

中图分类号：

学科分类号：

摘要：

Solution-processable polyelectrolyte complex (PEC) modified with various water-soluble fullerene derivatives (fullerenol, carboxyfullerene, fullerene derivative with L-arginine) were synthesized by using sodium carboxymethyl cellulose (CMC) and poly(diallyldimethylammonium chloride) (PDADMAC) for the creation of novel supported mixed matrix membranes for enhanced pervaporation and nanofiltration. The optimal preparation conditions and membrane composition were found. The structural characteristics and physicochemical properties of PEC-based membranes were analysed by Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron (SEM) and atomic force (AFM) microscopies, thermogravimetric analysis (TGA), contact angle measurements and swelling experiments. The developed membranes were tested in pervaporation dehydration of isopropanol (12–50 wt% water) and, for the first time, in nanofiltration of heavy metals (model solutions and wastewater from galvanic production). Optimal transport characteristics were possessed by a supported membrane with a selective layer based on PEC-fullerenol (4%) composite: improved permeation flux of 0.28–1.62 kg/(m2h) and 99.99–79.30 wt% water in permeate in pervaporation dehydration of isopropanol (12–50 wt% water) at 22 °C, and 2.5 times improved permeability at a high rejection coefficients in nanofiltration of heavy metals compared to the pristine CMC membrane, which indicated its promise industrial application for water purification. © 2022 Elsevier B.V.

引用

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