将银-聚多巴胺颗粒注入聚醚砜基质以提高膜的染料脱盐性能和抗菌性能。

Infusion of Silver-Polydopamine Particles into Polyethersulfone Matrix to Improve the Membrane's Dye Desalination Performance and Antibacterial Property.

作者信息

Maganto Hazel Lynn C, Ang Micah Belle Marie Yap, Dizon Gian Vincent C, Caparanga Alvin R, Aquino Ruth R, Huang Shu-Hsien, Tsai Hui-An, Lee Kueir-Rarn

机构信息

School of Chemical, Biological and Materials Engineering and Sciences, Mapúa University, Manila 1002, Philippines.

School of Graduate Studies, Mapúa University, Manila 1002, Philippines.

出版信息

Membranes (Basel). 2021 Mar 19;11(3):216. doi: 10.3390/membranes11030216.

DOI:10.3390/membranes11030216

PMID:33808528

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8003254/

Abstract

The advancement in membrane science and technology, particularly in nanofiltration applications, involves the blending of functional nanocomposites into the membranes to improve the membrane property. In this study, Ag-polydopamine (Ag-PDA) particles were synthesized through in situ PDA-mediated reduction of AgNO to silver. Infusing Ag-PDA particles into polyethersulfone (PES) matrix affects the membrane property and performance. X-ray photoelectron spectroscopy (XPS) analyses confirmed the presence of Ag-PDA particles on the membrane surface. Field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) describe the morphology of the membranes. At an optimum concentration of Ag-PDA particles (0.3 wt % based on the concentration of PES), the modified membrane exhibited high water flux 13.33 L∙m∙h at 4 bar with high rejection for various dyes of >99%. The PES membrane had a pure water flux more than 5.4 times higher than that of a pristine membrane. Furthermore, in bacterial attachment using , the modified membrane displayed less bacterial attachment compared with the pristine membrane. Therefore, immobilizing Ag-PDA particles into the PES matrix enhanced the membrane performance and antibacterial property.

摘要

膜科学与技术的进步，尤其是在纳滤应用方面，涉及将功能性纳米复合材料混入膜中以改善膜性能。在本研究中，通过原位聚多巴胺（PDA）介导将硝酸银还原为银来合成银 - 聚多巴胺（Ag - PDA）颗粒。将Ag - PDA颗粒注入聚醚砜（PES）基质会影响膜的性能。X射线光电子能谱（XPS）分析证实了膜表面存在Ag - PDA颗粒。场发射扫描电子显微镜（FESEM）和原子力显微镜（AFM）描述了膜的形态。在Ag - PDA颗粒的最佳浓度（基于PES浓度为0.3 wt％）下，改性膜在4巴压力下表现出高水通量13.33 L∙m⁻²∙h⁻¹，对各种染料的截留率> 99％。PES膜的纯水通量比原始膜高5.4倍以上。此外，在使用[此处原文缺失相关细菌附着实验的具体内容]进行细菌附着实验时，与原始膜相比，改性膜显示出较少的细菌附着。因此，将Ag - PDA颗粒固定到PES基质中增强了膜性能和抗菌性能。