聚醚砜超滤膜与两性聚合物和掺氮二氧化钛纳米颗粒共混,用于防污和光催化

IF 2.7 3区 化学 Q2 POLYMER SCIENCE Journal of Applied Polymer Science Pub Date : 2024-09-12 DOI:10.1002/app.56272
Jikui Wang, Jiani Yan, Deyi Ma, Xinquan Zou, Ruiyang Ma, Bodong Bi, Yan Sheng, Kaixin Zhang
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摘要

聚醚砜(PES)膜因其固有的疏水性而极易结垢,这限制了其应用并增加了水处理成本。为了调节聚醚砜的孔隙大小并防止堵塞,我们引入了不同质量的聚乙二醇 38 嵌段-聚丙二醇 8(PEG-PPG),并筛选出最佳配比。进一步引入合成的氮掺杂二氧化钛(N-TiO2),制备了防污和光催化 PES 超滤膜(N-TiO2@M)。在运行 120 分钟后,N-TiO2@M3 对牛血清白蛋白的排斥率达到 93.8%,亚甲基蓝的光催化效率达到 95.3%。此外,N-TiO2@M4 的水接触角为 41.0°。与 PES 膜相比,N-TiO2@M4 的纯水通量提高了 499.3%。膜通量的防污率从 70.0% 提高到 82.7%,这表明 N-TiO2@M4 的耐久性得到了增强。此外,对 N-TiO2@M4 的综合分析表明,其总污染率为 40.2%。紫外线(UV)清洗 1 小时后,N-TiO2@M4 的不可逆污染率为 5.7%;可见光照射 1 小时后,不可逆污染率为 6.7%。N-TiO2 和 PEG-PPG 的混合方法简单方便,为开发具有抗污染和在可见光/紫外光下降解的 N-TiO2@M 提供了可能。
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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Polyethersulfone ultrafiltration membranes co-blended with amphiphilic polymers and nitrogen-doped titanium dioxide nanoparticles for anti-fouling and photocatalysis

Polyethersulfone (PES) membranes have a high tendency to scale due to their inherent hydrophobicity, which limits their application and increases water treatment costs. To regulate the size of the pores of PES and prevent clogging, different qualities of poly(ethylene glycol)38-block-poly(propylene glycol)8 (PEG-PPG) were introduced and screened for the best ratios. Further introduced synthesized nitrogen-doped titanium dioxide (N-TiO2), anti-fouling and photocatalytic PES ultrafiltration membranes (N-TiO2@M) were prepared. N-TiO2@M3 exhibited bovine serum albumin rejection rate of 93.8% and achieved a methylene blue photocatalytic efficiency of 95.3% after 120 min of operation. Furthermore, N-TiO2@M4 showcased a water contact angle of 41.0°. Notably, the pure water flux of N-TiO2@M4 surged by 499.3% compared to that of PES membrane. The fouling resistance ratio for membrane flux witnessed an increase from 70.0% to 82.7%, demonstrating the enhanced durability of N-TiO2@M4. Moreover, the comprehensive analysis for N-TiO2@M4 revealed a total contamination rate of 40.2%. The irreversible contamination rate of N-TiO2@M4 after 1 h of ultraviolet light (UV) cleaning was 5.7%, and the irreversible contamination rate after 1 h of visible light irradiation was 6.7%. The method for mixing N-TiO2 and PEG-PPG is straightforward and convenient, offering potential for the development of N-TiO2@M with resistance to pollution and degradation in visible/UV light.

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来源期刊
Journal of Applied Polymer Science
Journal of Applied Polymer Science 化学-高分子科学
CiteScore
5.70
自引率
10.00%
发文量
1280
审稿时长
2.7 months
期刊介绍: The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.
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