Synthesis, characterization, and performance of MXene-modified PVC membranes for organic and inorganic separation

IF 3.7 3区工程技术 Q2 ENGINEERING, CHEMICAL Chemical Engineering Research & Design Pub Date : 2024-10-22 DOI:10.1016/j.cherd.2024.10.022

Zainab E. AlHadithy , Adnan A. AbdulRazak , Ahmed M.H. Abdulkadhim Al-Ghaban , Qusay F. Alsalhy , Hicham Meskher , Raed A. Al-Juboori

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Abstract

This study explores the transformation of polyvinyl chloride (PVC) flat sheet membranes for the first time using MXene, a hydrophilic two-dimensional (2D) nanosheet, to enhance ultrafiltration (UF) performance for wastewater treatment. The loading of MXene in the PVC solution was adjusted from 0 to 0.5 g in order to create modified membranes. The properties and performance of these membranes were thoroughly analyzed using field emission scanning electronmicroscopy (FESEM), contact angle (CA) measurements, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), water permeation flux, Bovine serum albumin (BSA) rejection, and Pb metal ions removal tests. Among the developed membranes, the N2-modified PVC membrane, with 0.4 g of MXene, exhibited the most favorable characteristics, including a contact angle of 65.77° and a porosity of .84.8 %. This membrane achieved the highest clean water permeation flux of 201.3 LMH, along with a 99.9 %, 91.03 % BSA and Pb metal ions rejection rate respectively, and a flux recovery ratio (FRR) of 90.2 %. The incorporation of MXene nanosheets significantly enhanced membrane efficiency compared to neat PVC membranes, demonstrating the promising capabilities of MXene-modified PVC membranes for effective wastewater treatment.

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用于有机和无机分离的 MXene 改性聚氯乙烯膜的合成、表征和性能

本研究首次利用亲水性二维（2D）纳米片材 MXene 对聚氯乙烯（PVC）平板膜进行改造，以提高超滤（UF）性能，用于废水处理。聚氯乙烯溶液中的 MXene 含量从 0 克调整到 0.5 克，以制成改性膜。利用场发射扫描电子显微镜（FESEM）、接触角（CA）测量、傅立叶变换红外光谱（FTIR）、X 射线衍射（XRD）、水渗透通量、牛血清白蛋白（BSA）排斥和铅金属离子去除测试，对这些膜的特性和性能进行了全面分析。在所开发的膜中，含有 0.4 克 MXene 的 N2 改性聚氯乙烯膜表现出最有利的特性，包括 65.77° 的接触角和 84.8 % 的孔隙率。这种膜的净水渗透通量最高，达到 201.3 LMH，对 BSA 和 Pb 金属离子的排斥率分别为 99.9%、91.03% 和 90.2%。与纯聚氯乙烯膜相比，加入了 MXene 纳米片的聚氯乙烯膜大大提高了膜效率，这表明 MXene 改性聚氯乙烯膜在有效处理废水方面具有广阔的前景。

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来源期刊

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.