文献类型：期刊文献

英文题名：Chlorine resistant TFN nanofiltration membrane incorporated with octadecylamine-grafted GO and fluorine-containing monomer

作者：Xue, Shuang-Mei[1];Ji, Chen-Hao[1];Xu, Zhen-Liang[1];Tang, Yong-Jian[1];Li, Rui-Han[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Membrane Sci & Engn R & D Lab, Chem Engn Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：545

起止页码：185

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20174004234650);WOS:【SCI-EXPANDED(收录号:WOS:000413270200022)】；

基金：The authors are thankful for the financial support received from the National Science and Technology Support Project of China (2014BAB07B01 and 2015BAB09B01), Project of National Energy Administration of China (2011-1635 and 2013-117) and the Key Technology R & D Program of Jiangsu Committee of Science and Technology in China (BE2013031). Besides, the authors thank Prof. Tao He of Shanghai Advanced Research Institute of Chinese Academy of Sciences (SARI-CAS) for the characterization of Zeta potentials of the TFC and TFN membrane surfaces.

语种：英文

外文关键词：Nanofiltration membrane preparation; Modified graphene oxide; Interfacial polymerization; Chlorine resistant; Octadecylamine

摘要：This work describes a novel nanofiltration membrane fabrication strategy in which the octadecylamine-grafted GO with the organophilic property is incorporated in organic phase during interfacial polymerization (IP) in order to protect the polyamide backbone from the attack of free chlorine. Meanwhile, the aqueous phase containing mixed amines of piperazine (PIP) and the fluorine-containing monomer (2,2'-bis(1-hydroxyl-1-trifluoromethyl-2,2,2-triflutoethyl)-4,4'-methylenedianiline, BHTTM) enables further improvement in chlorine resistance of the thin film nanocomposite (TFN) membrane. The modified GO was systematically characterized by TEM, FT-IR, TGA and XRD. And the membrane properties were investigated by XPS, TEM, AFM and dynamic contact angle. The octadecylamine-grafted GO TFN membrane (TFNMA-GO-ODA) exhibits measurably smoother and less hydrophilic surface compared to TFC membrane with mixed amines as well as the similarly fabricated GO TFN membrane. The TFNMA-GO-ODA demonstrated a pure water flux of 49.6 L m(-2) h(-1) (0.6 MPa), which was nearly 2.5 times than that of pristine PIP TFC membrane and 1.6 times than that of mixed-amine TFC membrane, while keeping high Na2SO4 rejection of 98.4%. More importantly, the TFNMA-GO-ODA presented excellent chlorine resistance, benefiting from the existence of fluorine-containing groups in BHTTM and the protective effect of stable graphene nanosheets. The results indicate great potential of such membrane in water desalination and purification in industrial scale.