Ferric ions mediated defects narrowing of graphene oxide nanofiltration membrane for robust removal of organic micropollutants

doi:10.1016/j.cej.2021.128587

	Ferric ions mediated defects narrowing of graphene oxide nanofiltration membrane for robust removal of organic micropollutants
	Li, Sushuang; Wan, Yinhua; Guo, Shiwei; Luo, Jianquan
刊名	CHEMICAL ENGINEERING JOURNAL
	2021-05-01
卷号	411 页码:11
关键词	Graphene oxide Membrane Surface modification Micropollutant Defect narrowing Water treatment
ISSN号	1385-8947
DOI	10.1016/j.cej.2021.128587
英文摘要	Removal of organic micropollutants (OMPs) in the wastewater treatment is greatly important due to their adverse effects on human health and ecosystem. In this work, we provide a new perspective to prepare graphene oxide (GO) nanofiltration (NF) membrane with narrow pore size distribution for robust removal of OMPs. Ferric ions (Fe3+) mediated GO nanosheets are firstly used to prepare GO membrane, then the membrane surface is modified by a targeted coating layer consisting of tannic acid-aminopropyltriethoxysilane (TA-APTES) via their strong affinity to Fe3+, where the larger membrane defects with more Fe3+ would be patched by thicker TAAPTES. Such "speckled" TA-APTES coating can simultaneously enhance antifouling ability and regulate nano channels of the GO membrane. The resulted GO membrane shows high and steady rejections on various OMPs, even in the long-term operation, cross-flow filtration or under high-pressure. This work proposes an innovative idea for constructing hydrophilic surface and narrow pore size distribution of NF membrane.
资助项目	Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07402001-004] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017069]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000624501000004
资助机构	Major Science and Technology Program for Water Pollution Control and Treatment ; Youth Innovation Promotion Association of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/47919]
专题	中国科学院过程工程研究所
通讯作者	Luo, Jianquan
作者单位	Univ Chinese Acad Sci, Inst Proc Engn, Chinese Acad Sci, State Key Lab Biochem Engn,Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Sushuang,Wan, Yinhua,Guo, Shiwei,et al. Ferric ions mediated defects narrowing of graphene oxide nanofiltration membrane for robust removal of organic micropollutants[J]. CHEMICAL ENGINEERING JOURNAL,2021,411:11.
APA	Li, Sushuang,Wan, Yinhua,Guo, Shiwei,&Luo, Jianquan.(2021).Ferric ions mediated defects narrowing of graphene oxide nanofiltration membrane for robust removal of organic micropollutants.CHEMICAL ENGINEERING JOURNAL,411,11.
MLA	Li, Sushuang,et al."Ferric ions mediated defects narrowing of graphene oxide nanofiltration membrane for robust removal of organic micropollutants".CHEMICAL ENGINEERING JOURNAL 411(2021):11.