含氧化石墨烯混合基质反渗透复合膜的制备及性能研究

摘要

以间苯二胺(MPD)为水相单体、均苯三甲酰氯(TMC)为油相单体，氧化石墨烯（GO）作为水相添加物，采用界面聚合法，制备了GO-PA（聚酰胺）/PSF（聚砜）混合基质反渗透复合膜。采用扫描电子显微镜表征了膜形貌，考察了该膜对氯化钠的截留性能及耐氯性。结果表明，聚酰胺反渗透膜填充氧化石墨烯后，其分离性能优于聚酰胺膜，且具有较好的耐氯性。随着氧化石墨烯含量的增加，膜的通量增大，当添加量为0.005%时，膜具有最大通量，为63 L/(m2∙h)。%Graphene-oxide-(GO)-mixed-matrix-reverse-osmosis-(RO)-membranes-were-pre-pared-with-metaphenylenediamine-(MPD)-and-trimesoyl-chloride-(TMC)-by-interfacial-polymer-ization.-The-morphology-of-the-membranes-was-characterized-by-scanning-electron-microscopy-(SEM).-The-separation-performance-and-chlorine-resistance-were-also-investigated.-The-results-showed-that-owing-to-the-hydrophilicity-of-GO,the-membranes-appeared-to-be-more-hydrophil-ic-and-had-higher-pure-water-fluxes-than-the-bared-polyamide-RO-membrane-only-with-a-slight-change-of-rejection.-The-mixed-matrix-RO-membrane-of-polyamide-and-GO-showed-better-chlo-rine-resistance-than-polyamide-RO-membrane.-When-the-content-of-GO-added-in-aqueous-phase-was-0.005-wt%,the-flux-of-the-membrane-was-maximum,and-the-flux-of-the-membrane-was-63-L/(m2⋅h).