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首页> 外文期刊>ACS applied materials & interfaces >Sustainable Antibiofouling Properties of Thin Film Composite Forward Osmosis Membrane with Rechargeable Silver Nanoparticles Loading
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Sustainable Antibiofouling Properties of Thin Film Composite Forward Osmosis Membrane with Rechargeable Silver Nanoparticles Loading

机译：具有可充电银纳米粒子负载的薄膜复合正渗透膜的可持续防污性能

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摘要

Microbial attachment and biofilm formation on filtration membrane can greatly compromise its flux and separation efficiency. Here, a simple and facile approach has been developed to in situ generate silver nanoparticles (Ag NPs) on the thin film composite forward osmosis (TFC FO) membrane for sustainable antibiofouling performances. Mussel-inspired dopamine chemistry was applied to grow polydopamine coating on both surfaces of FO membranes, followed by the generation of Ag NPs upon a simple dip coating in silver nitrate aqueous solution. Furthermore, the Ag NPs deposited membranes had a long-term silver release profile with rechargability for multiple times upon their depletion, and exhibited strong sustainable bactericidal efficacy against Gram-negative bacteria and Gram-positive bacteria. The Ag NPs had a controllable effect on the membrane performances including the water flux and reverse salt flux in the FO test mode. Our practicable antibacterial strategy may apply to other types of filtration membranes with diverse material surfaces and may pave a new way to achieve the sustainable membrane antibiofouling performance on a large scale.
机译：滤膜上的微生物附着和生物膜形成会极大地影响其通量和分离效率。在这里，已经开发出一种简单而简便的方法来在薄膜复合正向渗透（TFC FO）膜上原位生成银纳米颗粒（Ag NP），以实现可持续的抗生物污垢性能。应用贻贝启发的多巴胺化学剂在FO膜的两个表面上生长聚多巴胺涂层，然后在硝酸银水溶液中进行简单的浸涂后生成Ag NP。此外，Ag NPs沉积膜具有长期的银释放特性，并且在耗尽后可多次充电，并且对革兰氏阴性菌和革兰氏阳性菌表现出很强的可持续杀菌作用。 Ag NP对FO测试模式下的膜性能（包括水通量和反盐通量）具有可控的影响。我们可行的抗菌策略可能适用于具有不同材料表面的其他类型的滤膜，并可能为大规模实现可持续的膜防污性能铺平道路。

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