【摘要】 为提高传统聚酰胺纳滤膜渗透性能和抗污染性能，文章以聚砜(PSF)超滤膜为基材，以哌嗪、均苯三甲酰氯为水相和有机相单体，引入氧化石墨烯(GO)作为亲水改性材料，通过界面聚合法制备氧化石墨烯复合纳滤膜(GO-PA-PSF膜)，研究GO占比对膜表面形貌、化学结构及分离性能的影响。结果表明，当GO质量分数为0.01%时，GO-PA-PSF膜表面开始出现褶皱，膜表面粗糙度、亲水性和负电性增强，其渗透通量为50.47 L/(m2·h)，对Na2SO4的截留率为98.14%，在30 h脱盐试验中保持良好的稳定性，对3种模型污染物的抗污染性能有所提升。更多还原

【Abstract】 To upgrade the permeability and anti-fouling performance of conventional polyamide nano-filtration membranes,a laboratory experiment was concucted to fabricate the graphene oxide composite nano-filtration membrane（GO-PA-PSF）using the inter-facial polymerization method, which involved polysulfone（PSF） ultra-filtration membranes used as the substrate, piperazine and homotrimethylene tricarbonyl chloride as the aqueous-phase and organic-phase monomers, and graphene oxide（GO） as the hydrophilic modified material; and then the effect of the propertion of GO on membrane surface morphology, chemical structure and separation performance was investigated. Consequently, it was showed that as GO mass fraction came to 0.01%, the surface of GO-PA-PSF membrane began to wrinkle, increasing membrane surface roughness,hydrophilicity and negative electro-negativity, the permeation flux was 50.47 L/（m²· h）, Na₂SO₄retention rate 98.14%; in addition, the GO-PA-PSF desalination test maintained stable quite well in the 30 h, demonstrating a better anti-fouling performance in the treatment of three specific pollutants.更多还原