Novel sulfonated graphene oxide incorporated polysulfone nanocomposite membranes for enhanced-performance in ultrafiltration process 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Chemosphere: Environmental toxicology and risk assessment
年/卷/期
2018 / 207 / Sep.
页码
581-589
ISSN号
0045-6535
作者单位
GIST, Sch Earth Sci & Environm Engn, GDRC, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea;GIST, Sch Earth Sci & Environm Engn, GDRC, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea;GIST, Sch Mat Sci & Engn, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea;GIST, Sch Mat Sci & Engn, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea;GIST, Sch Earth Sci & Environm Engn, GDRC, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea;
作者
Kang, Yesol;Obaid, M.;Jang, Jaewon;Ham, Moon-Ho;Kim, In S.;
摘要
A novel polysulfone (PSf) nanocomposite ultrafiltration (UF) membrane using sulfonated graphene oxide (SGO) as additives was fabricated and investigated. SGO nanoparticles were chemically synthesized from graphene oxide (GO) by using sulfuric acid (H2SO4) and were confirmed by Raman and Fourier transform infrared (FTIR) spectroscopy. The morphology of prepared membranes was characterized by scanning electron microscopy (SEM), energy dispersive x-ray (EDX) and atomic force microscopy (AFM). Results showed that adding small amount (less than 0.3 wt%) of SGO improved wettability, porosity and mean pore size of PSf/SGO membranes compared to the pristine PSf membrane and significantly enhanced the water flux of SGO incorporated PSf membranes. In UF performance, the nanocomposite membrane prepared by adding 1.5 w/w% SGO of PSf (designated as M1.5) showed the highest water flux result, which was 125% higher than the control PSf membrane (no SGO addition). Interestingly, there was no trade-off between water flux and bovine serum albumin (BSA) rejection, i.e more than 98% BSA rejection. The addition of SGO hydrophilic additives also showed better results in long-term BSA separation performance. The enhancement of hybrid membrane's properties was attributed to the hydrophilicity of sulfonic acid group (-SO3H) on the surface of SGO additive. This study suggested that the SGO nanoparticle is a promising candidate to modify the PSf UF membranes. (C) 2018 Elsevier Ltd. All rights reserved.
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关键词/主题词
Ultrafiltration membranes;Mixed matrix membranes;Sulfonated graphene oxide (SGO);Polysulfone;Hydrophilicity;
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