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TiO2 Polyamide Thin Film Nanocomposite Reverses Osmosis Membrane for Water Desalination

机译:TiO2聚酰胺薄膜纳米复合材料反渗透膜用于海水淡化

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摘要

In this study, TiO2 nanoparticles were inserted into the polyamide layer of traditional thin film composite membrane. The nanoparticles were dispersed in a trimesoyl chloride-hexane solution before interfacial polymerization with m-phenylenediamine-aqueous solution. Membrane characterization was performed via contact angle measurements, atomic force microscopy (AFM), scanning electron microscopy (SEM), and water flux, salt rejection, and fouling resistance evaluation. The results indicate that TiO2 could effectively improve membrane performance. Water flux increased from 40 to 65 L/m² h by increasing NPs concentration from 0 to 0.1 wt. %, while NaCl rejection was above 96%. Moreover, the modified membrane demonstrated better organic fouling resistance and robust antibacterial efficiency.
机译:在这项研究中,将TiO2纳米粒子插入传统薄膜复合膜的聚酰胺层中。在与间苯二胺水溶液界面聚合之前,将纳米颗粒分散在均苯三甲酰氯-己烷溶液中。膜的表征是通过接触角测量,原子力显微镜(AFM),扫描电子显微镜(SEM)以及水通量,脱盐率和耐污垢性评估来进行的。结果表明,TiO2可以有效地改善膜性能。通过将NPs浓度从0增至0.1 wt。,水通量从40 L /m²h增加至65 L /m²h。 %,而NaCl截留率高于96%。此外,改性膜表现出更好的抗有机污垢性和强大的抗菌效率。

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