基于嵌入 TiO2 纳米颗粒的创新型 3D 打印支撑层的增强通量纳滤膜

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2025-04-15 DOI:10.1016/j.desal.2025.118914

Yixin Ji , Zhongmin Su , Xiaochun Cui , Zhi Geng , Chi Wang

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引用次数: 0

摘要

近年来，纳滤膜由于其高分离效率、表面电荷特性等优点，在水处理和回用中得到了广泛的关注。然而，传统的纳滤膜支撑层结构具有较高的渗透阻力，限制了其整体性能。为了解决这个问题，理想的通孔结构支撑层可以有效地减少水渗透的阻力。先进的高精度3D打印技术的出现促进了这种结构的制造。本研究采用先进的高精度3D打印技术制备了具有直通式孔结构的支撑层，并将PES-COOH活性层通过氢键附着在支撑层表面，形成PES-COOH@3DP纳滤膜。这一创新大大降低了渗透阻力，从而提高了纳滤过程的渗透通量。PES-COOH@3DP纳滤膜的渗透率达到6.64 L·m−2·h−1·bar−1，是PES-COOH@UF纳滤膜的两倍。通过将不同浓度的TiO2纳米粒子（0.5%、1%、1.5%）掺入光敏树脂材料中，利用3D打印机打印出掺杂TiO2纳米粒子的亲水支撑层。这提高了纳滤膜的亲水性，从而提高了其渗透通量。当进料液中含有1000 mg·L−1 Na2SO4时，[email protected] % TiO2 3DP膜的渗透率为8.56 L·m−2·h−1·bar−1，是PES-COOH@UF膜的1.5倍，比商用NF90膜高22%，同时保留98.76%的盐分，并表现出较强的抗氯性。这项研究强调了先进的高精度3D打印技术的巨大潜力，使其成为下一代NF膜海水淡化发展的有力竞争者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Enhanced-flux nanofiltration membrane based on innovative 3D-printed support layer embedded with TiO2 nanoparticles

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Enhanced-flux nanofiltration membrane based on innovative 3D-printed support layer embedded with TiO2 nanoparticles

In recent years, nanofiltration (NF) membranes have garnered significant attention for water treatment and reuse applications, owing to their high separation efficiency, surface charge characteristics, and other advantages. However, the conventional support layer structures in NF membranes exhibit high permeation resistance, limiting their overall performance. To address this issue, an ideal through-hole structural support layer effectively minimizes resistance to water infiltration. The advent of advanced high-precision 3D printing technology facilitates the fabrication of such structures. In this study, a support layer with a straight-through pore structure was fabricated using advanced high-precision 3D printing technology, and the PES-COOH active layer was attached to the surface of the support layer via hydrogen bonding, resulting in the PES-COOH@3DP NF membrane. This innovation substantially reduced the permeation resistance, thereby enhancing the permeation flux of the NF process. The permeability of the PES-COOH@3DP NF membrane reached 6.64 L·m⁻²·h⁻¹·bar⁻¹, which is double that of the PES-COOH@UF NF membrane. By incorporating varying concentrations of TiO₂ nanoparticles (0.5 %, 1 %, 1.5 %) into the photosensitive resin material, a hydrophilic support layer doped with TiO₂ nanoparticles was printed using a 3D printer. This improved the NF membrane's hydrophilicity, thereby enhancing its permeation flux. When the feed solution contained 1000 mg·L⁻¹ Na₂SO₄, the [email protected] % TiO₂ 3DP NF membrane exhibited a permeability of 8.56 L·m⁻²·h⁻¹·bar⁻¹, 1.5 times that of the PES-COOH@UF NF membrane and 22 % higher than the commercial NF90 membrane, while retaining 98.76 % salt and demonstrating strong chlorine resistance. This study underscores the significant potential of advanced high-precision 3D printing technology, establishing it as a strong contender for next-generation NF membrane desalination development.

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来源期刊

Desalination 工程技术-工程：化工

CiteScore

14.60

自引率

20.20%

发文量

619

审稿时长

41 days

期刊介绍： Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.