高导电棉纤维/纳米银/聚苯胺复合膜的合成用于水杀菌( Synthesis of highly conductive cotton fiber/nanostructured silver/polyaniline composite membranes for water sterilization application )

NY Abu-Thabit RA Basheer Practical, Experimental/ conducting polymers cotton fabrics electric resistance electrical conductivity filtration membranes microorganisms nanocomposites nanofabrication nanostructured materials polymer blends polymerisation silver sterilisation (microbiological) surface morphology water treatment/ water sterilization bacterial inactivation efficiency electric potential filtration rate gravity force E. coli bacteria auxiliary reducing agent DMF dimethylformamide membrane electrical resistance silver flakes silver nanoparticles induction period silver nitrate weak oxidizing agent aniline monomers oxidative polymerization electrifying filter membranes conductive polyaniline electrically conductive composite membranes cotton fiber-nanostructured silver-polyaniline composite membranes size 500 nm to 1000 nm voltage 20 V/ A8116 Methods of nanofabrication and processing A6140K Structure of polymers, elastomers, and plastics A8265F Film and membrane processes ion exchange dialy

制备了由棉纤维、导电聚苯胺和银纳米结构组成的导电复合膜（ECCMs）,并将其用作水杀菌的通电滤膜。在硝酸银作为弱氧化剂存在下，苯胺单体氧化聚合过程中原位生成金属银和聚苯胺。该反应具有诱导期长的特点，所得到的ECCMs的形貌包括粒径为500-1000 nm的银纳米颗粒和银片，膜电阻在10-30欧姆平方范围内。然而，当二甲基甲酰胺(DMF)作为辅助还原剂触发和加速聚合反应时，形成了线状、带状、片状的银纳米结构，并发现银纳米结构嵌入到聚苯胺涂层和棉纤维之间。这些ECCM在2-10欧姆的范围内显示出稍低的电阻，因此被用于制造细菌灭活装置。当含10-10CFU MLE的水样。在20 V的电位下,以0.8 L的滤速通过ECCMs,对大肠杆菌的灭活率为92%。当处理后的溶液在相同条件下第二次通过膜时，未检出大肠杆菌。

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