Membrane biofouling poses severe impacts on the membrane lifespan and performance. In this study, a silver nanoparticles-graphene oxide hybrid nanosheet (AgNPs-GO) was synthesized as a bactericidal agent for effective membrane biofouling mitigation. The surface polymerization between polyvinyl alcohol (PVA) and AgNPs-GO nanosheet improved the stability of inorganic biocidal materials on the membrane surface and had a significant effect on the permeability and rejection performance of membranes. The PVA/AgNPs-GO modified hydrophilic polyvinylidene fluoride (H-PVDF) membrane exhibited an excellent anti-microbial activity in both static contact and filtration modes; nearly 100% inactivation of Pseudomonas aeruginosa in solution and 91% reduction in the membrane surface adhesion were found. The composite membrane with good stability and anti-microbial ability may offer an alternative to alleviate membrane biofouling problem.

膜生物污染严重影响了膜的寿命和性能。在这项研究中，合成了银纳米颗粒-氧化石墨烯杂化纳米片（AgNPs-GO）作为有效减轻膜生物污染的杀菌剂。聚乙烯醇（PVA）和AgNPs-GO纳米片之间的表面聚合提高了膜表面无机杀生物材料的稳定性，并对膜的渗透性和截留性能产生了显着影响。PVA / AgNPs-GO改性的亲水性聚偏二氟乙烯（H-PVDF）膜在静态接触和过滤模式下均表现出优异的抗菌活性；铜绿假单胞菌近100％灭活在溶液中，膜表面粘附力降低了91％。具有良好稳定性和抗微生物能力的复合膜可以提供减轻膜生物污染问题的替代方法。