Fabrication of Robust Forward Osmosis Membrane by Assembling FeOxCly Nanoparticles

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2024-10-22 DOI:10.1002/adfm.202414087

Sonali Roy, Priyamjeet Deka, Raktim Gogoi, Mrityunjoy Dey, Kiran Mayawad, Bikash K. Das, Kasibhatta K. R. Datta, Kalyan Raidongia

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Abstract

Owing to its inherent advantages like low-energy consumption, low-fouling propensity, and high recovering ability over high-pressure-driven membrane processes, the future of membrane technology is shifting toward forward osmosis (FO). However, the utility of FO in challenging areas is hindered by the lack of suitable FO membranes. Here, the development of innovative FO membranes by depositing weakly magnetic and positively charged FeO_xCl_y nanoparticles on a negatively charged nylon membrane (FeO_x-Nyl) is reported. Remarkably, the FeO_x-Nyl membrane possesses outstanding stability in an aqueous medium and survived in both acidic (pH = 3.3) and basic (pH = 12.2) solutions. Upon varying the loading amount of FeO_xCl_y, the water flux of the FeO_x-Nyl membrane varies from 27.8 to 61.3 LMH (from 5 to 30 mg). Due to its hydrophilic nature, the FeO_x-Nyl membrane exhibits excellent flux recovery rates (FRR), up to ≈70%. The outstanding robustness and high flux of FeO_x-Nyl are exploited in challenging applications like recovering reactive chemical wastes and dehydration of acetic acid.

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通过组装 FeOxCly 纳米颗粒制造坚固的正向渗透膜

与高压驱动的膜过程相比，膜技术具有低能耗、低污垢倾向和高回收能力等固有优势，因此膜技术的未来正朝着正渗透（FO）方向发展。然而，由于缺乏合适的 FO 膜，FO 在具有挑战性的领域的应用受到了阻碍。本文报告了通过在带负电荷的尼龙膜（FeOx-Nyl）上沉积弱磁性和带正电荷的 FeOxCly 纳米粒子而开发出的创新型 FO 膜。值得注意的是，FeOx-Nyl 膜在水介质中具有出色的稳定性，可在酸性（pH = 3.3）和碱性（pH = 12.2）溶液中存活。在改变 FeOxCly 的负载量时，FeOx-Nyl 膜的水通量从 27.8 LMH 到 61.3 LMH（从 5 毫克到 30 毫克）不等。由于其亲水性，FeOx-Nyl 膜表现出卓越的通量恢复率（FRR），最高可达 ≈70%。FeOx-Nyl 杰出的坚固性和高通量可用于回收活性化学废物和醋酸脱水等具有挑战性的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.