One-step surface modification of small molecule taurine for the preparation of high-performance reverse osmosis membranes

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-01-31 DOI:10.1016/j.colsurfa.2025.136314

Bangzhen Liu , Fuhao Zhang , Zicheng Wang , Tengfang Zhang , Xun Zhou , Yuhao Chen , Haixiang Sun

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引用次数: 0

Abstract

Hypothesis

Surface modification is a prevalent method for reverse osmosis (RO) membranes to enhance the separation performance due to its advantageous characteristics, including stability and ease of integration. However, the macromolecules utilized in modification processes often need intricate procedures.

Experiments

In this work, the micromolecule taurine (TAU) was grafted onto RO membrane surface through a simple one-step covalent grafting modification. The mechanism of TAU modification was revealed through the characterization of morphology and structure of the membranes as well as the analysis of performance tests.

Findings

The molecular chain flexibility of the modified membrane was enhanced, which was conducive to the permeation performance. In addition, sulfonic acid groups were introduced onto the membrane surface with the objective of improving hydrophilicity, electronegativity and chelation with boric acid. The optimal modified membranes showed an enhancement of flux by over 40 % while maintaining the salt rejection rate. Furthermore, the modified membranes demonstrated lower flux decline rates in bovine serum albumin and dextran pollutants tests, indicating an enhancement in the membrane's fouling resistance. In addition, the modified membranes exhibited enhanced boron rejection properties. The one-step surface grafting modification strategy provides an effective method to improve the boron rejection capacity and fouling resistance of RO membranes.

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.