Simple Amphoteric Charge Strategy to Reinforce Superhydrophilic Polyvinylidene Fluoride Membrane for Highly Efficient Separation of Various Surfactant-Stabilized Oil-in-Water Emulsions

doi:10.1021/acsami.0c13508

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	Simple Amphoteric Charge Strategy to Reinforce Superhydrophilic Polyvinylidene Fluoride Membrane for Highly Efficient Separation of Various Surfactant-Stabilized Oil-in-Water Emulsions
	Xiong, Zhu; He, Zijun; Mahmud, Sakil; Yang, Yang; Zhou, Li; Hu, Chun; Zhao, Shuaifei
刊名	ACS APPLIED MATERIALS & INTERFACES
	2020
卷号	12 期号:41 页码:47018-47028
关键词	ZERO-VALENT IRON WASTE-WATER MAGNETIC-RELAXATION CRUDE-OIL MICROFILTRATION SUPEROLEOPHOBICITY BIODEGRADATION FABRICATION TECHNOLOGY
DOI	10.1021/acsami.0c13508
英文摘要	Long-term efficient separation of highly emulsified oily wastewater is challenging. Reported herein is the preparation of a reinforced superhydrophilic, underwater superoleophobic membrane with demulsification properties using active iron nanoparticles in situ generated on a polydopamine (PDA)/polyethylenimine (PEI)-modified polyvinylidene fluoride (PVDF) membrane surface. A stable zwitterionic structure is fabricated on the membrane surface and provides it with an excellent capability of binding a hydration layer, leading to enhanced superhydrophilic/underwater superoleophobic properties. The interaction between the membrane surface and water is quantified using the relaxation time of water. After iron nanoparticles in situ anchoring, the superhydrophilic, underwater superoleophobic PDA/PEI modified PVDF membrane shows more stable flux behaviors, higher oil separation efficiency, demulsification, and excellent antioil-fouling properties for various anionic, nonionic, and cationic surfactant-stabilized oil-in-water emulsions in a crossflow filtration system. The reinforced hydration layer and the amphoteric charged demusification properties of the membrane play important roles in enhancing the membrane separation performance. The reinforced membrane also exhibits excellent cleaning and reusability performance in long-term operations. The outstanding separation performance, as well as the simple and cost-effective fabrication process of the membrane with various favorable properties, highlight its promise in practical emulsified oily water applications.
学科主题	Science & Technology - Other Topics ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20416]
专题	2020专题
作者单位	Hu, C (corresponding author), Guangzhou Univ, Inst Environm Res Greater Bay Area, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China.
推荐引用方式 GB/T 7714	Xiong, Zhu,He, Zijun,Mahmud, Sakil,et al. Simple Amphoteric Charge Strategy to Reinforce Superhydrophilic Polyvinylidene Fluoride Membrane for Highly Efficient Separation of Various Surfactant-Stabilized Oil-in-Water Emulsions[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(41):47018-47028.
APA	Xiong, Zhu.,He, Zijun.,Mahmud, Sakil.,Yang, Yang.,Zhou, Li.,...&Zhao, Shuaifei.(2020).Simple Amphoteric Charge Strategy to Reinforce Superhydrophilic Polyvinylidene Fluoride Membrane for Highly Efficient Separation of Various Surfactant-Stabilized Oil-in-Water Emulsions.ACS APPLIED MATERIALS & INTERFACES,12(41),47018-47028.
MLA	Xiong, Zhu,et al."Simple Amphoteric Charge Strategy to Reinforce Superhydrophilic Polyvinylidene Fluoride Membrane for Highly Efficient Separation of Various Surfactant-Stabilized Oil-in-Water Emulsions".ACS APPLIED MATERIALS & INTERFACES 12.41(2020):47018-47028.