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Employing Visible Light To Construct Photoinitiated Polymerized Nanofiltration Membranes for High Permeation and Environmental Micropollutant Removal
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2023-07-12 , DOI: 10.1021/acs.est.3c02184
Zihui Wang 1 , Langming Bai 1 , Jinlong Wang 1 , Qian Zhao 1 , Heng Liang 1 , Guibai Li 1
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2023-07-12 , DOI: 10.1021/acs.est.3c02184
Zihui Wang 1 , Langming Bai 1 , Jinlong Wang 1 , Qian Zhao 1 , Heng Liang 1 , Guibai Li 1
Affiliation
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Improving the nanofiltration (NF) performance of membrane-based treatment is conducive to promoting environmental water recycling and addressing water resource depletion. Combinations of light, electricity, and heat with traditional techniques of preparing membranes should optimize membrane performance. Interfacial polymerization and photopolymerization were integrated to construct a photopolymerized thin-film composite NF membrane with a ridged surface morphology. Under visible light initiation, 2-acrylamido-2-methyl-1-propanesulfonic acid was crosslinked with the polyamide network. The control effects of light on the membrane surface and physicochemical properties were revealed via infrared thermal images and response surface methodology. To present the diffusion motion of piperazine molecules, molecular dynamics simulations were implemented. Through density functional theory simulations, the crosslinking mechanism of the photoinduced NF network was identified and verified. The surface physicochemical characteristics and perm-selectivity performance were systematically illustrated. The photopolymerized membrane outperformed the pristine in permeability and selective separation competence; without degradation of solute repulsion, the water permeation was enhanced to 33.5 L m–2 h–1 bar–1, 6.6 times that of the initial membrane. In addition, the removal of organic contaminants and antifouling capacities were improved. This work represents a novel lead for applying sustainable resources in constructing high-performance membranes for environmental challenges.
中文翻译：
利用可见光构建光引发聚合纳滤膜，实现高渗透和环境微污染物去除
提高膜处理的纳滤（NF）性能有利于促进环境水循环利用和解决水资源枯竭问题。将光、电和热与传统的膜制备技术相结合应该可以优化膜的性能。将界面聚合和光聚合相结合，构建了具有脊状表面形态的光聚合薄膜复合纳滤膜。在可见光引发下，2-丙烯酰氨基-2-甲基-1-丙磺酸与聚酰胺网络交联。通过红外热图像和响应面方法揭示了光对膜表面和物理化学性质的控制作用。为了呈现哌嗪分子的扩散运动，进行了分子动力学模拟。通过密度泛函理论模拟，确定并验证了光诱导NF网络的交联机制。系统地阐述了表面物理化学特性和选择性渗透性能。光聚合膜的渗透性和选择性分离能力优于原始膜；在不降低溶质排斥力的情况下，水渗透率提高至33.5 L m –2 h –1 bar –1，是初始膜的6.6倍。此外，有机污染物的去除和防污能力也得到提高。这项工作代表了应用可持续资源构建高性能膜应对环境挑战的新先导。
更新日期：2023-07-12
中文翻译：
利用可见光构建光引发聚合纳滤膜，实现高渗透和环境微污染物去除
提高膜处理的纳滤（NF）性能有利于促进环境水循环利用和解决水资源枯竭问题。将光、电和热与传统的膜制备技术相结合应该可以优化膜的性能。将界面聚合和光聚合相结合，构建了具有脊状表面形态的光聚合薄膜复合纳滤膜。在可见光引发下，2-丙烯酰氨基-2-甲基-1-丙磺酸与聚酰胺网络交联。通过红外热图像和响应面方法揭示了光对膜表面和物理化学性质的控制作用。为了呈现哌嗪分子的扩散运动，进行了分子动力学模拟。通过密度泛函理论模拟，确定并验证了光诱导NF网络的交联机制。系统地阐述了表面物理化学特性和选择性渗透性能。光聚合膜的渗透性和选择性分离能力优于原始膜；在不降低溶质排斥力的情况下，水渗透率提高至33.5 L m –2 h –1 bar –1，是初始膜的6.6倍。此外，有机污染物的去除和防污能力也得到提高。这项工作代表了应用可持续资源构建高性能膜应对环境挑战的新先导。
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