Hollow Fiber Membrane Decorated with Ag/MWNTs: Toward Effective Water Disinfection and Biofouling Control

被引:199
作者
Gunawan, Poernomo [1 ]
Guan, Cong [1 ]
Song, Xianghua [1 ]
Zhang, Quanyuan [1 ]
Leong, Susanna Su Jan [1 ]
Tang, Chuyang [2 ]
Chen, Yuan [1 ]
Chan-Park, Mary B. [1 ]
Chang, Matthew Wook [1 ]
Wang, Kean [1 ]
Xu, Rong [1 ]
机构
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore
[2] Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore
基金
新加坡国家研究基金会;
关键词
silver; carbon nanotubes; composites; membranes; antimicrobial; biofilm; SILVER NANOPARTICLES; CARBON NANOTUBES; ANTIBACTERIAL ACTIVITY; ESCHERICHIA-COLI; POLYACRYLONITRILE; BACTERIA; IONS; PAN;
D O I
10.1021/nn2038725
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The currently applied disinfection methods during water treatment provide effective solutions to kill pathogens, but also generate harmful byproducts, which are required to be treated with additional efforts. In this work, an alternative and safer water disinfection system consisting of silver nanoparticle/multiwalled carbon nanotubes (Ag/MWNTs) coated on a polyacrylonitrile (PAN) hollow fiber membrane, Ag/MWNTs/PAN, has been developed. Silver nanoparticles of controlled sizes were coated on polyethylene glycol-grafted MWNTs. Ag/MWNTs were then covalently coated on the external surface of a chemically modified PAN hollow fiber membrane to act as a disinfection barrier. A continuous filtration test using E. coli containing feedwater was conducted for the pristine PAN and Ag/MWNTs/PAN composite membranes. The Ag/MWNT coating significantly enhanced the antimicrobial activities and antifouling properties of the membrane against E. coli. Under the continuous filtration mode using E. coli feedwater, the relative flux drop over Ag/MWNTs/PAN was 6%, which was significantly lower than that over the pristine PAN (55%) at 20 h of filtration. The presence of the Ag/MWNT disinfection layer effectively inhibited the growth of bacteria in the filtration module and prevented the formation of biofilm on the surface of the membrane. Such distinctive antimicrobial properties of the composite membrane is attributed to the proper dispersion of silver nanoparticles on the external surface of the membrane, leading to direct contact with bacterium cells.
引用
收藏
页码:10033 / 10040
页数:8
相关论文
共 43 条
[1]   An in vitro assessment of the antibacterial properties and cytotoxicity of nanoparticulate silver bone cement [J].
Alt, V ;
Bechert, T ;
Steinrücke, P ;
Wagener, M ;
Seidel, P ;
Dingeldein, E ;
Domann, E ;
Schnettler, R .
BIOMATERIALS, 2004, 25 (18) :4383-4391
[2]   Surface Morphology and Amide Concentration Depth Profile of Aminolyzed Poly(ethylene terephthalate) Films [J].
Avadanei, Mihaela ;
Drobota, Mioara ;
Stoica, Iuliana ;
Rusu, Elena ;
Barboiu, Virgil .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2010, 48 (23) :5456-5467
[3]   Silver-filled polyethersulfone membranes for antibacterial applications - Effect of PVP and TAP addition on silver dispersion [J].
Basri, H. ;
Ismail, A. F. ;
Aziz, M. ;
Nagai, K. ;
Matsuura, T. ;
Abdullah, M. S. ;
Ng, B. C. .
DESALINATION, 2010, 261 (03) :264-271
[4]   Hydroxyl-Functionalized and N-Doped Multiwalled Carbon Nanotubes Decorated with Silver Nanoparticles Preserve Cellular Function [J].
Castle, Alicia B. ;
Gracia-Espino, Eduardo ;
Nieto-Delgado, Cesar ;
Terrones, Humberto ;
Terrones, Mauricio ;
Hussain, Saber .
ACS NANO, 2011, 5 (04) :2458-2466
[5]   The inhibitory effects of silver nanoparticles, silver ions, and silver chloride colloids on microbial growth [J].
Choi, Okkyoung ;
Deng, Kathy Kanjun ;
Kim, Nam-Jung ;
Ross, Louis, Jr. ;
Surampalli, Rao Y. ;
Hu, Zhiqiang .
WATER RESEARCH, 2008, 42 (12) :3066-3074
[6]   The preparation and characterization of silver-loading cellulose acetate hollow fiber membrane for water treatment [J].
Chou, WL ;
Yu, DG ;
Yang, MC .
POLYMERS FOR ADVANCED TECHNOLOGIES, 2005, 16 (08) :600-607
[7]   CATIONIC POLYELECTROLYTES .9. NEW ASPECTS OF POLY(N,N-DIALKYLAMINOALKYLACRYLAMIDES) SYNTHESIS VIA NITRILE GROUP REACTION OF POLYACRYLONITRILE WITH N,N-DIALKYLAMINOALKYLAMINES [J].
DRAGAN, S ;
GRIGORIU, G ;
PETRARIU, I .
POLYMER BULLETIN, 1991, 27 (01) :17-24
[8]  
Feng QL, 2000, J BIOMED MATER RES, V52, P662, DOI 10.1002/1097-4636(20001215)52:4<662::AID-JBM10>3.0.CO
[9]  
2-3
[10]   Ruthenium nanoparticles supported on multi-walled carbon nanotubes: Highly effective catalytic system for hydrogenation processes [J].
Jahjah, Mohamad ;
Kihn, Yolande ;
Teuma, Emmanuelle ;
Gomez, Montserrat .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2010, 332 (1-2) :106-112