| Fabrication and characterizations of a novel kind of nanofiltration membranes with antibacterial characteristic |
| Authors: WANG Xi, JIANG Zhibin, HONG XinJun, HE YuanTao, CHEN Shunquan, MIAO Jing |
| Units: 1. Guangdong Key Laboratory of Membrane Materials and Membrane Separation, Guangzhou Institute of Advanced Technology, Chinese Academy of Sciences, Guangzhou 511458, China; 2. Sinochem Ningbo River Membrane Technology Co. Ltd., Ningbo 315700, China; 3.School of Chemistry, South China Normal University, Guangzhou 510006, China |
| KeyWords: carboxymethyl chitosan, graphene oxide, polyamides, Staphylococcus aureus, antimicrobial |
| ClassificationCode:TQ028.8 |
| year,volume(issue):pagination: 2021, 41(1):64-72 |
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Abstract: |
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The polyamide composite nanofiltration membranes were developed using N, O-carboxymethyl chitosan (NOCC) and trimethyl chloride (TMC) as the materials of the oil phase and aqueous phase, respectively. The resultant NF membranes showed relatively low permeate fluxes, and it was easy for the bacteria to be attached to the membrane surface. In this work, a negatively charged polyamide-graphene oxide (GO) composite NF membranes were fabricated through the addition of GO into the NOCC aqueous solution, i.e. the aqueous phase. The resultant GO-PA/PSF hybrid composite NF membranes showed higher rejections, better antimicrobial and antifouling capabilities. The morphologies, physical and chemical characteristics of the resultant composite NF membranes were characterized with scanning electronic microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR), atomic force microscopy (AFM), contact angle, and Zeta potential. The rejection performances and the antimicrobial and antifouling capabilities to Staphylococcus aureus were investigated symmetrically. It suggested that the addition of a certain amount of GO in the aqueous phase could effectively improve the rejection performances, antimicrobial and antifouling capabilities. |
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Funds: |
| 广东省产学研合作项目(2016B090918048)、质量评价导向的特种膜中药绿色制造技术及其专属装备集成研究(2019YFC1711300),中国科学院科技服务网络计划(STS计划)区域重点项目(KFJ-STS-QYZX-043) |
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AuthorIntro: |
| 王希(1987.7-),女,黑龙江哈尔滨,工程师,硕士研究生,研究方向:膜材料改性,E-mail:xi.wang@giat.ac.cn;江志彬(1992.7-),男,广东梅州,博士研究生,研究方向:纳滤膜分离材料、锂电池隔膜材料,E-mail:2018010147@m.scnu.edu.cn; |
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Reference: |
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[1] Liu T Y, Bian L X, Yuan H G, et al. Fabrication of a high-flux thin film composite hollow fiber nanofiltration membrane for wastewater treatment[J]. J Membrane Sci, 2015, 478:25-36. |
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