改性氧化石墨烯接枝聚酰胺纳滤膜
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摘要
由哌嗪(PIP)和均苯三甲酰氯(TMC)界面聚合制备的聚酰胺纳滤膜的通量较低和抗污染性能较差,本文通过在聚酰胺纳滤膜表面上接枝两种氨基化改性的氧化石墨烯(GO),制备高通量、耐污染的改性聚酰胺复合纳滤膜,并通过傅里叶红外光谱(ATR-FTIR spectra)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和静态水接触角等对改性聚酰胺纳滤膜进行了表征和分析.考察了改性聚酰胺膜的通量、截留率和耐污染性能,研究结果表明,GO的加入能够有效地提高聚酰胺纳滤膜的水通量和抗污染性等性能.
The flux and fouling resistance of polyamide nanofiltration membranes prepared by PIP and TMC are poor. In this paper, polyamide nanofiltration membrane with high flux and fouling resistance were prepared by surface grafting of two kinds of amino modified graphene oxide. The modified polyamide nanofiltration membrane were characterized by Fourier infrared spectroscopy(ATR-FTIR spectra), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM), and static water contact angle. The performance of the modified membrane was investigated by measuring the water flux and recovery, and salt rejection. Results indicate that grafted graphene oxide can effectively increase the water flux and fouling resistance properties of the polyamide nanofiltration membrane.
The flux and fouling resistance of polyamide nanofiltration membranes prepared by PIP and TMC are poor. In this paper, polyamide nanofiltration membrane with high flux and fouling resistance were prepared by surface grafting of two kinds of amino modified graphene oxide. The modified polyamide nanofiltration membrane were characterized by Fourier infrared spectroscopy(ATR-FTIR spectra), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM), and static water contact angle. The performance of the modified membrane was investigated by measuring the water flux and recovery, and salt rejection. Results indicate that grafted graphene oxide can effectively increase the water flux and fouling resistance properties of the polyamide nanofiltration membrane.
引文
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[20] 张祥波. 新型纳滤膜的制备及其在水处理中的应用[D].济南:济南大学, 2014.
[21] 刘小莉. 聚(N - 乙烯基吡咯烷酮)接枝改性表面及其蛋白质吸附研究[D]. 武汉:武汉理工大学, 2012.
[2] 邱实, 吴礼光, 张林,等. 纳滤分离机理[J]. 水处理技术, 2009, 35(1):15-19.
[3] 王晓琳, 张澄洪, 赵杰. 纳滤膜的分离机理及其在食品和医药行业中的应用[J]. 膜科学与技术, 2000, 20(1):29-36.
[4] 李彤彤,李英军,徐剑锋,等.多级A/O工艺强化城市生活污水再生过程的污染物去除效果研究[J].环境工程技术学报,2018,8(4):420-428.
[5] 樊晋琼. 二氧化钛/聚酰胺反渗透复合膜的制备及表征[D]. 青岛:中国海洋大学,2012.
[6] 魏秀珍, 洪家亮, 鲍晓燕,等. 氧化石墨烯 - 聚酰胺(GO - PA)复合纳滤膜的制备及应用[J]. 浙江工业大学学报, 2017,45(6):660-665.
[7] Hu Y H, Wang H, Hu B. Thinnest two-dimensional nanomaterial-graphene for solar energy[J]. Chemsuschem, 2010, 3(7):782-796.
[8] Geim A K. Graphene: status and prospects[J]. Science, 2009, 324(5934):1530-1534.
[9] 余宗学, 马瑜, 何毅,等. TiO2 - GO的制备及TiO2 - GO/环氧树脂涂层的抗腐蚀性能[J]. 复合材料学报, 2015, 32(4):1017-1024.
[10] 黄钰凯. KH550 - GO复合栅介质低压氧化物薄膜晶体管研究[D].镇江:江苏大学,2016.
[11] 毛云孝. 氧化石墨烯表面接枝聚合物及其性能研究[D]. 合肥:合肥工业大学, 2013.
[12] 杨梅, 赵长伟, 杨彬,等. 氧化石墨烯改性PMIA膜的制备及性能研究[J]. 水处理技术, 2017(7):119-123.
[13] 胡学兵, 于云, 汪永清,等. 氧化石墨烯改性对不同孔径Al2O3微滤膜纯水渗透通量的作用[J]. 膜科学与技术, 2016, 36(6):32-35.
[14] Yu Y, Zhao C, Yu L, et al. Removal of perfluorooctane sulfonates from water by a hybrid coagulation-nanofiltration process[J]. Chem Eng J, 2016, 289(2):7-16.
[15] Bano S, Mahmood A, Kim S J, et al. Graphene oxide modified polyamide nanofiltration membrane with improved flux and antifouling properties[J]. J Mater Chem A, 2015, 3(5):2065-2071.
[16] 李青青, 朱振亚, 王磊,等. 氧化石墨烯改性PVDF/PET复合膜的制备及其抗污染性能[J]. 环境工程学报,2018, 12(1):25-33.
[17] Li H B, Shi W Y, Du Q Y, et al. Improved separation and antifouling properties of thin-film composite nanofiltration membrane by the incorporation of cGO[J]. Appl Surf Sci, 2017, 407:260-275.
[18] 王茜, 郭晓燕, 邵怀启,等. 石墨烯及氧化石墨烯对分离膜改性的方法、效能和作用机理[J]. 化学进展, 2015, 27(10):1470-1480.
[19] Terpi?owski K. Influence of the ambient temperature on water and diiodomethane contact angle with quartz surface[J]. Annales UMCS Chem, 2015, 70(1):125-136.
[20] 张祥波. 新型纳滤膜的制备及其在水处理中的应用[D].济南:济南大学, 2014.
[21] 刘小莉. 聚(N - 乙烯基吡咯烷酮)接枝改性表面及其蛋白质吸附研究[D]. 武汉:武汉理工大学, 2012.