Facile preparation of loess-coated membranes for multifunctional surfactant-stabilized oil-in-water emulsion separation Electronic supplementary information (ESI) available: Additional figures and movies. See DOI: 10.1039/c9gc00747d

doi:10.1039/c9gc00747d

	Facile preparation of loess-coated membranes for multifunctional surfactant-stabilized oil-in-water emulsion separation Electronic supplementary information (ESI) available: Additional figures and movies. See DOI: 10.1039/c9gc00747d
	Wang, Xiaoyang 1; Li, Mouji 1; Shen, Yongqian 2; Yang, Yaoxia 1; Feng, Hua 1; Li, Jian 1
刊名	GREEN CHEMISTRY
	2019-06-07
卷号	21 期号:11 页码:3190-3199
ISSN号	1463-9262
DOI	10.1039/c9gc00747d
英文摘要	Frequent oil spill accidents and industrial wastewater discharge result in severe health and ecological problems to human beings. Generally, industrial wastewater contains not only various kinds of oils, but also water-soluble dyes and heavy metal ions. Elimination of these contaminants in the process of oil/ water separation is very important in industrial applications and still remains unsolved. Even though some membranes with underwater superoleophobicity have been extensively used toward oil-in-water emulsion separation, the bulk of them lack the capacity of removing the water-soluble pollutants from water during oil/ water separation. Herein, a novel loess-coated polyvinylidene fluoride ( PVDF) membrane was successfully fabricated through depositing the loess and sodium alginate suspension onto a PVDF membrane with a vacuum pump. The loess-coated PVDF membrane displayed extraordinary underwater superoleophobicity with oil contact angles larger than 150 degrees and sliding angles smaller than 10 degrees toward different oils, including crude oil with high viscosity. Besides, the loess-coated PVDF membrane can separate various oil-in-water emulsions with separation efficiencies up to 99.6% and flux as high as 910.4 L m-2 h-1 bar-1. Moreover, the coated membrane retained excellent separation performances even after 10 cycles. In addition, the coated membrane showed outstanding resistance to corrosive liquids, and could separate oil-in-water emulsions in corrosive solutions effectively. Furthermore, the as-prepared membrane displayed outstanding mechanical performance and flexibility. More importantly, the loess-coated PVDF membrane exhibited effective adsorption toward dyes and heavy metal ions. This cost-efficient, environmentally friendly and multifunctional loess-coated PVDF membrane not only allows natural loess resources to be used rationally, but also effectively solves the problems of water pollution.
资助项目	Young Teacher Research Group Foundation of Northwest Normal University[NWNU-LKQN-16-6]
WOS研究方向	Chemistry ; Science & Technology - Other Topics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000470709000031
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31809]
专题	材料科学与工程学院
通讯作者	Shen, Yongqian; Li, Jian
作者单位	1.Northwest Normal Univ, Coll Chem & Chem Engn, Res Ctr Gansu Mil & Civilian Integrat Adv Struct, Lanzhou 730070, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Key Lab Nonferrous Met Alloys & Proc,Minist Educ, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiaoyang,Li, Mouji,Shen, Yongqian,et al. Facile preparation of loess-coated membranes for multifunctional surfactant-stabilized oil-in-water emulsion separation Electronic supplementary information (ESI) available: Additional figures and movies. See DOI: 10.1039/c9gc00747d[J]. GREEN CHEMISTRY,2019,21(11):3190-3199.
APA	Wang, Xiaoyang,Li, Mouji,Shen, Yongqian,Yang, Yaoxia,Feng, Hua,&Li, Jian.(2019).Facile preparation of loess-coated membranes for multifunctional surfactant-stabilized oil-in-water emulsion separation Electronic supplementary information (ESI) available: Additional figures and movies. See DOI: 10.1039/c9gc00747d.GREEN CHEMISTRY,21(11),3190-3199.
MLA	Wang, Xiaoyang,et al."Facile preparation of loess-coated membranes for multifunctional surfactant-stabilized oil-in-water emulsion separation Electronic supplementary information (ESI) available: Additional figures and movies. See DOI: 10.1039/c9gc00747d".GREEN CHEMISTRY 21.11(2019):3190-3199.