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通过具有功能化表面的二氧化铈改性提高RALEX-CM膜的选择性

Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface.

作者信息

Stenina Irina, Yurova Polina, Achoh Aslan, Zabolotsky Victor, Wu Liang, Yaroslavtsev Andrey

机构信息

Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky Prospect 31, 119991 Moscow, Russia.

Faculty of Chemistry and High Technologies, Kuban State University, 350040 Krasnodar, Russia.

出版信息

Polymers (Basel). 2023 Jan 27;15(3):647. doi: 10.3390/polym15030647.

DOI:10.3390/polym15030647
PMID:36771946
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9919321/
Abstract

Ion exchange membranes are widely used for water treatment and ion separation by electrodialysis. One of the ways to increase the efficiency of industrial membranes is their modification with various dopants. To improve the membrane permselectivity, a simple strategy of the membrane surface modification was proposed. Heterogeneous RALEX-CM membranes were surface-modified by ceria with a phosphate-functionalized surface. Despite a decrease in ionic conductivity of the prepared composite membranes, their cation transport numbers slightly increase. Moreover, the modified membranes show a threefold increase in Ca/Na permselectivity (from 2.1 to 6.1) at low current densities.

摘要

离子交换膜广泛应用于水处理和通过电渗析进行离子分离。提高工业膜效率的方法之一是用各种掺杂剂对其进行改性。为了提高膜的选择透过性，提出了一种简单的膜表面改性策略。用具有磷酸盐功能化表面的二氧化铈对非均相RALEX-CM膜进行表面改性。尽管制备的复合膜的离子电导率有所下降，但其阳离子迁移数略有增加。此外，在低电流密度下，改性膜的Ca/Na选择透过性提高了两倍（从2.1提高到6.1）。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/5d7dfaf32187/polymers-15-00647-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/71fab5fb8227/polymers-15-00647-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/fe43a9200016/polymers-15-00647-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/22e21fd9906a/polymers-15-00647-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/9478c2090046/polymers-15-00647-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/5d7dfaf32187/polymers-15-00647-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/71fab5fb8227/polymers-15-00647-g001a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/fe43a9200016/polymers-15-00647-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/22e21fd9906a/polymers-15-00647-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/9478c2090046/polymers-15-00647-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51e1/9919321/5d7dfaf32187/polymers-15-00647-g005.jpg

相似文献

[1]
Improvement of Selectivity of RALEX-CM Membranes via Modification by Ceria with a Functionalized Surface.

Polymers (Basel). 2023-1-27

[2]
Permselectivity of Cation Exchange Membranes Modified by Polyaniline.

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[3]
Characterization of Poly(Acrylic) Acid-Modified Heterogenous Anion Exchange Membranes with Improved Monovalent Permselectivity for RED.

Membranes (Basel). 2020-6-26

[4]
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[5]
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[6]
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Membranes (Basel). 2023-6-26

[7]
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J Colloid Interface Sci. 2018-8-29

[8]
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Membranes (Basel). 2019-12-6

[9]
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[10]
Mathematical Modeling of Monovalent Permselectivity of a Bilayer Ion-Exchange Membrane as a Function of Current Density.

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引用本文的文献

[1]
High-Performance Hydrogen-Selective Pd-Ag Membranes Modified with Pd-Pt Nanoparticles for Use in Steam Reforming Membrane Reactors.

Int J Mol Sci. 2023-12-12

[2]
Hydrogen Permeability of Composite Pd-Au/Pd-Cu Membranes and Methods for Their Preparation.

Membranes (Basel). 2023-7-6

本文引用的文献

[1]
A Review on Ion-Exchange Membrane Fouling during the Electrodialysis Process in the Food Industry, Part 1: Types, Effects, Characterization Methods, Fouling Mechanisms and Interactions.

Membranes (Basel). 2021-10-16

[2]
Nafion/Surface Modified Ceria Hybrid Membranes for Fuel Cell Application.

Polymers (Basel). 2021-7-30

[3]
Ionic Mobility in Ion-Exchange Membranes.

Membranes (Basel). 2021-3-11

[4]
Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives.

Membranes (Basel). 2020-7-9

[5]
How Electrical Heterogeneity Parameters of Ion-Exchange Membrane Surface Affect the Mass Transfer and Water Splitting Rate in Electrodialysis.

Int J Mol Sci. 2020-2-1

[6]
Zero-liquid discharge (ZLD) technology for resource recovery from wastewater: A review.

Sci Total Environ. 2019-9-1

[7]
Cerium oxide doped nanocomposite membranes for reverse osmosis desalination.

Chemosphere. 2018-11-30

[8]
Cerium oxide nanoparticles with antioxidant capabilities and gadolinium integration for MRI contrast enhancement.

Sci Rep. 2018-5-3

[9]
Cerium oxide nanoparticles embedded thin-film nanocomposite nanofiltration membrane for water treatment.

Sci Rep. 2018-3-21

[10]
Maximizing the right stuff: The trade-off between membrane permeability and selectivity.

Science. 2017-6-16

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