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考察了不同氧化石墨烯(GO)配比的纳滤膜对3种目标污染物:利血平、诺氟沙星和盐酸四环素的去除效果。GO通过界面聚合反应嵌入到薄膜复合膜(TFC)的活性层中。运用傅里叶变换红外光谱、扫描电子显微镜、原子力显微镜、接触角及纳滤实验等手段对TFC膜进行表征和研究。制备的GO-TFC膜相较于纯聚酰胺(PA)膜而言,在保证污染物截留的情况下表现出了更高的水通量,同时对于pH的变化表现出更好的耐受性。GO的引入改变了膜的亲水性、表面形貌和表面电荷,从而显著地提高了膜的抗污染性。
The removal of three target pollutants, reserpine, norfloxacin and tetracycline hydrochloride, by nanofiltration membranes with different graphene oxide (GO) ratios was investigated. GO is intercalated with the interfacial polymerization reaction into the active layer of the thin film composite film (TFC). TFC membranes were characterized and studied by means of Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, contact angle and nanofiltration experiments. The prepared GO-TFC membrane exhibited higher water flux than the pure polyamide (PA) membrane while ensuring contaminant retention while exhibiting better resistance to changes in pH . The introduction of GO alters the hydrophilicity, surface topography and surface charge of the membrane, thereby significantly improving the membrane’s fouling resistance.