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首页> 外文期刊>E3S Web of Conferences >Synthesizing Ag/PDA/PES Antibacterial Membrane for Natural Organic Molecules Removal
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Synthesizing Ag/PDA/PES Antibacterial Membrane for Natural Organic Molecules Removal

机译：合成Ag / PDA / PES抗菌膜去除天然有机分子

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Silver nanoparticles (NP) was successfully immobilized on polydopamine (PDA) supported polyethersulfone (PES) membrane via a redox reaction. Polyvinylpyrrolidone (PVP) was added into membrane dope solution as a pore-forming agent. Four pieces of membranes (M1, M2, M3 and M4) were fabricated with different active layer coatings to compare their morphological and performance properties. The differences between each sample were highlighted as follow: M1 (pristine PES), M2 (PES+PVP), M3 (PDA/PES+PVP) and M4 (Ag/PDA/PES+PVP). All membranes were characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction and contact angle analysis. The membrane performance was examined using pure water permeability (PWP) test, antibacterial test and humic acid (HA) rejection test. Pristine M1 membrane showed that PWP of 27.16 LMH/bar and HA rejection of 84 %. In this study, it was found that the addition of PVP as a pore agent into the membrane M2 increased water flux but slightly deteriorated HA rejection. Coating of PDA on M3 and immobilizing silver NP on M4 membrane surface have improved HA rejection but compromised PWP. The results showed that membrane M4 carried excellent antibacterial property and highest HA rejection among all fabricated membranes.
机译：银纳米颗粒（NP）通过氧化还原反应成功地固定在聚多巴胺（PDA）支撑的聚醚砜（PES）膜上。将聚乙烯吡咯烷酮（PVP）作为成孔剂添加到膜浓液中。制作了四片具有不同活性层涂层的膜（M1，M2，M3和M4），以比较其形态和性能。每个样品之​​间的差异突出显示如下：M1（原始PES），M2（PES + PVP），M3（PDA / PES + PVP）和M4（Ag / PDA / PES + PVP）。使用扫描电子显微镜，能量色散X射线光谱，傅立叶变换红外光谱，X射线衍射和接触角分析对所有膜进行表征。使用纯水渗透率（PWP）测试，抗菌测试和腐殖酸（HA）排斥测试检查膜的性能。原始M1膜显示PWP为27.16 LMH / bar，HA排斥率为84％。在该研究中，发现在膜M2中添加作为孔剂的PVP增加了水通量，但是稍微降低了HA的排斥性。在M3上涂覆PDA并在M4膜表面固定银NP可以改善HA排斥性，但会损害PWP。结果表明，在所有制成的膜中，M4膜均具有出色的抗菌性能和最高的HA排斥性。

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