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Study on Graphene Oxide-Modified Polyacrylonitrile Hollow Fiber Membrane
Integrated Ferroelectrics ( IF 0.7 ) Pub Date : 2020-05-03 , DOI: 10.1080/10584587.2020.1728665
Shu-Jing Yang 1 , Xue-Xue Han 1 , Xin-Feng Zhang 1 , Song Wang 1 , Hai-Lin Cong 1, 2 , Xue-Jie Wang 1 , Long-Bin Li 1 , Xi-Chao Cui 1 , Hang-Qi Wang 1 , You-Qing Shen 1 , Bing Yu 1, 2
Affiliation  

Abstract In this paper, a multilayer diazo resin-graphene oxide/polyacrylonitrile composite membrane was prepared by layer-by-layer self-assembly and UV-induced modification of commercial polyacrylonitrile (PAN) hollow fiber membranes grafted with diazo resin (DR) and graphene oxide (GO). Scanning electron microscopy (SEM), infrared spectroscopy, contact angle, thermogravimetric analysis (TG), water flux and adsorption properties of heavy metals were studied. The results showed that diazo resin (DR) and graphene oxide (GO) were successfully grafted onto PAN membranes by layer-by-layer self-assembly. Carbonyl and carboxyl groups appeared on the surface of the modified PAN membranes; layer-by-layer self-assembly modification did not destroy the original morphology of PAN membranes, resulting in smaller pore size and higher surface roughness; hydrophilicity of the modified PAN-(DR-GO)3 membranes. The contact angle of pure water decreases from 87.8 degrees to 55.5 degrees, and the water flux increases from 733.30 g.m−1.h−1 to 1250.48 g.m−1.h−1. The thermo gravimetric curves of PAN films before and after modification did not change significantly, and the PAN films before and after modification had good thermal stability. The modified PAN membrane can achieve adsorption equilibrium in a relatively short time, and has good adsorption performance for heavy copper ions, with the adsorption rate as high as 92%.

中文翻译:

氧化石墨烯改性聚丙烯腈中空纤维膜的研究

摘要 本文通过对商业聚丙烯腈(PAN)中空纤维膜接枝重氮树脂(DR)和石墨烯进行逐层自组装和紫外诱导改性,制备了多层重氮树脂-氧化石墨烯/聚丙烯腈复合膜。氧化物 (GO)。研究了扫描电子显微镜(SEM)、红外光谱、接触角、热重分析(TG)、水通量和重金属吸附性能。结果表明,重氮树脂(DR)和氧化石墨烯(GO)通过逐层自组装成功接枝到PAN膜上。改性PAN膜表面出现羰基和羧基;逐层自组装改性不破坏PAN膜的原始形态,导致孔径更小,表面粗糙度更高;改性 PAN-(DR-GO)3 膜的亲水性。纯水的接触角从87.8度降低到55.5度,水通量从733.30 gm-1.h-1增加到1250.48 gm-1.h-1。改性前后PAN薄膜的热重曲线变化不大,改性前后PAN薄膜的热稳定性较好。改性PAN膜可以在较短的时间内达到吸附平衡,对重铜离子具有良好的吸附性能,吸附率高达92%。改性前后PAN薄膜的热重曲线变化不大,改性前后PAN薄膜的热稳定性较好。改性PAN膜可以在较短的时间内达到吸附平衡,对重铜离子具有良好的吸附性能,吸附率高达92%。改性前后PAN薄膜的热重曲线变化不大,改性前后PAN薄膜的热稳定性较好。改性PAN膜可以在较短的时间内达到吸附平衡,对重铜离子具有良好的吸附性能,吸附率高达92%。
更新日期:2020-05-03
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