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Thin-Film Composite Polyamide Membranes with In Situ Attached Ag Nanoparticles for Fouling-Mitigated Wastewater Treatment
ACS ES&T Water ( IF 4.8 ) Pub Date : 2021-07-12 , DOI: 10.1021/acsestwater.1c00139 Ming Yi 1, 2 , Lian Tian 1, 2 , Yafang Liu 1, 2 , Liang Shen 1, 2 , Chun Ding 1, 2 , Tengyang Zhu 1, 2 , Xi Yu 1, 2 , Yan Wang 1, 2
ACS ES&T Water ( IF 4.8 ) Pub Date : 2021-07-12 , DOI: 10.1021/acsestwater.1c00139 Ming Yi 1, 2 , Lian Tian 1, 2 , Yafang Liu 1, 2 , Liang Shen 1, 2 , Chun Ding 1, 2 , Tengyang Zhu 1, 2 , Xi Yu 1, 2 , Yan Wang 1, 2
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As an ideal membrane for wastewater treatment, desirable separation performance, and fouling resistance are both requisite. Herein we directly in situ attached Ag based nanoparticles on the surface of thin-film composite polyamide (TFC PA) membranes by using benzenediamine (BDA) derivatives with acid functional groups as one aqueous monomer mixed with m-phenylenediamine (MPD) for interfacial polymerization (IP). The acid functional groups in BDA derivatives incorporated in the PA layer facilitated the in situ metallization or mineralization without grafting additional “bridge” linkers. Various characterization techniques were employed to elucidate the modification mechanism. The effects of molecular structures of BDA derivatives on the surface properties, separation performance, and antifouling capacity of resulting membranes were also systematically investigated. Compared with the pristine TFC membrane, the modified membranes exhibited the 85.83% water flux enhancement and 65.25% lower reverse salt flux overcoming the permeability-selectivity trade-off. Moreover, the total Ag loading of modified membranes increases by 8–14 times as compared to that of the pristine one, thereby the enhanced antibacterial and antifouling capacities in wastewater treatment.
中文翻译：
具有原位附着银纳米颗粒的薄膜复合聚酰胺膜用于减少污染的废水处理
作为废水处理的理想膜，理想的分离性能和抗污染性都是必不可少的。在这里，我们通过使用带有酸性官能团的苯二胺（BDA）衍生物作为一种水性单体与间苯二胺（MPD）混合进行界面聚合，直接将基于银的纳米粒子原位附着在薄膜复合聚酰胺（TFC PA）膜的表面上。知识产权）。结合在 PA 层中的 BDA 衍生物中的酸官能团促进了原位金属化或矿化，而无需接枝额外的“桥接”接头。各种表征技术被用来阐明修饰机制。BDA衍生物分子结构对表面性质、分离性能、还系统地研究了所得膜的防污能力。与原始 TFC 膜相比，改性膜表现出 85.83% 的水通量增强和 65.25% 的低反向盐通量，克服了渗透性 - 选择性的权衡。此外，与原始膜相比，改性膜的总 Ag 负载量增加了 8-14 倍，从而增强了废水处理中的抗菌和防污能力。
更新日期：2021-08-13
中文翻译：
具有原位附着银纳米颗粒的薄膜复合聚酰胺膜用于减少污染的废水处理
作为废水处理的理想膜，理想的分离性能和抗污染性都是必不可少的。在这里，我们通过使用带有酸性官能团的苯二胺（BDA）衍生物作为一种水性单体与间苯二胺（MPD）混合进行界面聚合，直接将基于银的纳米粒子原位附着在薄膜复合聚酰胺（TFC PA）膜的表面上。知识产权）。结合在 PA 层中的 BDA 衍生物中的酸官能团促进了原位金属化或矿化，而无需接枝额外的“桥接”接头。各种表征技术被用来阐明修饰机制。BDA衍生物分子结构对表面性质、分离性能、还系统地研究了所得膜的防污能力。与原始 TFC 膜相比，改性膜表现出 85.83% 的水通量增强和 65.25% 的低反向盐通量，克服了渗透性 - 选择性的权衡。此外，与原始膜相比，改性膜的总 Ag 负载量增加了 8-14 倍，从而增强了废水处理中的抗菌和防污能力。
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