膜科学与技术

氧化石墨烯含量对聚砜超滤膜结构和性能的影响

作者：金文杰¹，胡朝武¹，李丽华¹，杨朋伟¹，丛冰冰²

单位： 1.辽宁科技大学化工学院环境工程系，鞍山 114051；2.喀左城市污水处理厂，朝阳 122300

关键词：浸没沉淀相转化；聚砜；复合超滤膜；抗污染性；抗菌性

出版年,卷(期):页码： 2015,35(4):20-24

摘要：

以氧化石墨烯和聚砜作为前驱物，采用浸没沉淀相转化方法制备氧化石墨烯/聚砜复合超滤膜。通过扫描电镜、傅里叶变换红外光谱仪、接触角测量仪分别对复合膜的断面结构、官能团及膜表面的接触角进行表征和测定；使用超滤杯测定复合膜的水通量及通量恢复率；同时测试了复合膜的抗菌性。结果表明：当氧化石墨烯含量为2%时，复合膜的指状孔结构明显而且较粗，水通量达到峰值242.43L/m2?h；此时复合膜的亲水性和抗污染性显著提高，复合膜的抗菌性能也得到改善。

Using graphene oxide and polysulfone as precursors, polysulfone/graphene oxide composite ultrafiltration membrane was prepared by the method of immersion precipitation phase inversion. The cross-section structure, functional groups and contact angle of the membrane were respectively characterized by Scanning electron microscope, Fourier transform infrared spectrometer and contact angle measurement instrument. And other performance index of the membrane such as water flux and flux recovery ratio were characterized by ultrafiltration installation. Antibacterial property was also tested. The results revealed that finger-like pore structure was clear and the water flux reached the peak 242.43L/m2?h when the content of graphene oxide was 2%. Meanwhile, hydrophilicity and anti-fouling performance of the composite membrane were significantly enhanced. The antibacterial property was also improved.

金文杰（1967—），女，辽宁鞍山人，硕士，教授，主要从事污染治理技术和资源化利用方面的研究工作。

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