Underwater superoleophobic PVA-GO nanofibrous membranes for emulsified oily water purification

doi:10.1039/c9en00883g

IMR OpenIR

	Underwater superoleophobic PVA-GO nanofibrous membranes for emulsified oily water purification
	Ghaffar, Abdul 1,2,3; Chen, Cheng 1,2; Zhu, Xiaoying 1,2; Chen, Baoliang 1,2
通讯作者	Chen, Baoliang(blchen@zju.edu.cn)
	2019-12-01
发表期刊	ENVIRONMENTAL SCIENCE-NANO
ISSN	2051-8153
卷号	6 期号:12 页码:3723-3733
摘要	Accidental oil spills during oil exploration, production and transportation constitute a significant environmental threat, and thus remain a major challenge. Given that, common polymeric membranes often exhibit surface fouling, which limits their long term practical applications and makes it hard to recycle them with efficient flux stability and separation efficiency. Herein, we report a versatile porous structured polyvinyl alcohol (PVA) based nanofibrous membrane (NFM) with graphene oxide (GO), prepared by simple and straightforward electrospinning, to remediate oily water. The PVA-GO NFM was prepared keeping in view an effective pore geometry and selective wettability to facilitate oily water emulsion separation entirely under gravitational force, with a controlled GO ratio and compatibility to avoid aggregation, allowing easy spin ability. The morphology of the PVA NFM was completely changed in the presence of GO due to homogenous distribution with robust mechanical strength and outstanding thermal stability. As a result, the as-prepared PVA-GO NFM achieves a separation efficiency of above 99% for surfactant-free and surfactant-stabilized oily water emulsions with a water flux of approximately 45 and 30 L m(-2) h(-1), entirely under gravitational force due to the presence of GO. Furthermore, the PVA-GO NFM maintains its actual selectivity and surface wettability even after recycling, thereby allowing long term applications with almost the same separation efficiency and water flux. The present methodology for membrane fabrication is believed to be an effective energy saving filtration approach, with anti-oil property and reusability, and thus is promising for practical use in water purification and treatment processes, specifically for oily water remediation.
资助者	National Natural Science Foundation of China ; National Key Technology Research and Development Program of China ; Zhejiang University
DOI	10.1039/c9en00883g
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21621005] ; National Natural Science Foundation of China[21607124] ; National Key Technology Research and Development Program of China[2018YFC1800705] ; Zhejiang University
WOS研究方向	Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics
WOS类目	Chemistry, Multidisciplinary ; Environmental Sciences ; Nanoscience & Nanotechnology
WOS记录号	WOS:000501324000015
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/136152
专题	中国科学院金属研究所
通讯作者	Chen, Baoliang
作者单位	1.Zhejiang Univ, Dept Environm Sci, Hangzhou 310058, Zhejiang, Peoples R China 2.Zhejiang Prov Key Lab Organ Pollut Proc & Control, Hangzhou 310058, Zhejiang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Adv Carbon Div, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Ghaffar, Abdul,Chen, Cheng,Zhu, Xiaoying,et al. Underwater superoleophobic PVA-GO nanofibrous membranes for emulsified oily water purification[J]. ENVIRONMENTAL SCIENCE-NANO,2019,6(12):3723-3733.
APA	Ghaffar, Abdul,Chen, Cheng,Zhu, Xiaoying,&Chen, Baoliang.(2019).Underwater superoleophobic PVA-GO nanofibrous membranes for emulsified oily water purification.ENVIRONMENTAL SCIENCE-NANO,6(12),3723-3733.
MLA	Ghaffar, Abdul,et al."Underwater superoleophobic PVA-GO nanofibrous membranes for emulsified oily water purification".ENVIRONMENTAL SCIENCE-NANO 6.12(2019):3723-3733.