| 纳米Ag粒子原位杂化PVDF超滤膜的抗污染性能 |
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| 引用本文： | 李鑫,方小峰,李健生,孙秀云,沈锦优,韩卫清,王连军.纳米Ag粒子原位杂化PVDF超滤膜的抗污染性能[J].环境科学学报,2014,34(3):638-644. |
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| 作者姓名： | 李鑫 方小峰 李健生 孙秀云 沈锦优 韩卫清 王连军 |
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| 作者单位： | 南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094;南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094;南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094;南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094;南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094;南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094;南京理工大学环境与生物工程学院, 江苏省化工污染控制与资源化重点实验室, 南京 210094 |
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| 基金项目： | 国家自然科学基金项目（No.51278247） |
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| 摘 要： | 以AgNO3为前驱体,聚偏氟乙烯(PVDF)为聚合物基体,聚乙烯吡咯烷酮(PVP)为分散剂和成孔剂,N,N-二甲基甲酰胺(DMF)为还原剂和溶剂,利用相转化法制备了纳米Ag粒子原位杂化PVDF超滤膜.采用扫描电镜、透射电镜、原子力显微镜及接触角测定仪对杂化膜的结构和性能进行了表征.结果表明:原位形成的纳米Ag粒子均匀地分散在聚合物基体中,纳米Ag粒子的添加改善了PVDF膜的亲水性能.以腐殖酸和牛血清蛋白作为污染物的代表,考察了Ag/PVDF膜的抗有机污染性能.以大肠杆菌、耐甲氧西林金黄色葡萄球菌及活性污泥作为微生物的代表,考察了杂化膜的抗生物污染性能.结果证实了与纯PVDF膜相比,Ag/PVDF膜通量衰减较慢,可有效抑制微生物的生长,表面受活性污泥污染程度小,具有显著的抗有机污染和抗生物污染性能.
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| 关 键 词： | 纳米Ag粒子 原位杂化 PVDF膜 抗有机污染 抗生物污染 |
| 收稿时间： | 2013/6/22 0:00:00 |
| 修稿时间： | 2013/10/10 0:00:00 |
Antifouling property of hybrid PVDF ultrafiltration membrane containing in situ formed Ag nanoparticles |
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| LI Xin,FANG Xiaofeng,LI Jiansheng,SUN Xiuyun,SHEN Jinyou,HAN Weiqing and WANG Lianjun.Antifouling property of hybrid PVDF ultrafiltration membrane containing in situ formed Ag nanoparticles[J].Acta Scientiae Circumstantiae,2014,34(3):638-644. |
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| Authors: | LI Xin FANG Xiaofeng LI Jiansheng SUN Xiuyun SHEN Jinyou HAN Weiqing and WANG Lianjun |
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| Institution: | Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094;Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094;Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094;Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094;Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094;Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094;Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094 |
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| Abstract: | Hybrid poly (vinylidene fluoride) (PVDF) ultrafiltration membrane containing in situ formed Ag nanoparticles have been prepared via phase inversion method using AgNO3 as precursor, PVDF as polymeric matrix, polyvinylpyrrolidone (PVP) as dispersing agent and porogen, N,N-dimethylformamide (DMF) as reducing agent and solvent. The structure and performance of hybrid membranes were characterized by scanning electron microscope, transmission electron microscope, atomic force microscope and contact angle measuring instrument. The results indicated that the in situ formed Ag nanoparticles were well dispersed throughout the polymeric matrix. The addition of Ag nanoparticles improved the hydrophilicity of PVDF membranes. The organic antifouling property of Ag/PVDF membrane was evaluated using humic acid and bovine serum albumin (BSA) as model foulants and the antibiofouling performance of hybrid membrane was investigated using Escherichia coli (E. coli), MRSA and activated sludge as the representative of microorganism. The results showed that the flux reduction of Ag/PVDF membrane was slower than that of pure PVDF membrane. The Ag/PVDF membrane restrained the growth of microorganism and showed lighter surface contamination to activated sludge, indicating significant organic antifouling and antibiofouling performance. |
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| Keywords: | Ag nanoparticles in situ hybrid PVDF membrane organic antifouling antibiofouling |
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