作者：Xiujing Huang, Yingbo Chen*, Xianshe Feng, Xiaoyu Hu，Yufeng Zhang, Lei Liu
关键字：Core-shell nanoparticlesThin film nanocomposite membraneAnti-biofoulingAnti-bacterial
论文来源：期刊
具体来源：Journal of Membrane Science Volume 602, 1 May 2020, 117956
发表时间：2020年

In this study, Ag@ZnO-Oleic acid (OAc)/polyamide (PA) thin film nanocomposite (TFN) membranes were prepared by interfacial polymerization with dispersing hydrophobic Ag@ZnO-OAc core-shell nanoparticles in trimesoyl chloride (TMC) solutions. The Ag@ZnO-OAc nanoparticle structure and interactions between OAc and TMC were confirmed by TEM, XPS and FTIR. Surface morphology, roughness, chemical composition, hydrophilicity and charges of the synthesized membranes were characterized by SEM, FTIR, contact angle and zeta potential analyses. The results showed that incorporating the Ag@ZnO-OAc nanoparticles into the PA layer improved chemical and physical properties of the TFN membranes. Compared with the nanoparticle-free TFC membrane, the Ag@ZnO-OAc/PA TFN membrane showed a considerably higher salt rejection, and a lower flux decline rate when tested with filtration of BSA solution as a model foulant and a higher flux recovery with water flush. In addition, the Ag@ZnO-OAc/PA TFN membrane showed excellent antibacterial performance against E. coli and S. aureus.

Highlights

?Hydrophobic Ag@ZnO-OAc NPs were synthesized by microemulsion method.

?Ag@ZnO-OAc NPs reacted with trimesoyl chloride to fabricate TFN membranes.

?Fouling-resistant and antibacterial capacities were effectively integrated.

?Slow and long-term release of Ag+ from Ag@ZnO-OAc NPs in the TFN membranes.