气候变化领域集成服务门户(CCPortal): Energetically efficient electrochemically tunable affinity separation using multicomponent polymeric nanostructures for water treatment

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DOI	10.1039/c8ee02000k
	Energetically efficient electrochemically tunable affinity separation using multicomponent polymeric nanostructures for water treatment
	Mao X.; Tian W.; Ren Y.; Chen D.; Curtis S.E.; Buss M.T.; Rutledge G.C.; Hatton T.A.
发表日期	2018
ISSN	17545692
起始页码	2954
结束页码	2963
卷号	11 期号:10
英文摘要	We describe a water treatment strategy, electrochemically tunable affinity separation (ETAS), which, unlike other previously developed electrochemical processes, targets uncharged organic pollutants in water. Key to achieving ETAS resides in the development of multicomponent polymeric nanostructures that simultaneously exhibit the following characteristics: an oxidation-state dependent affinity towards neutral organics, high porosity for sufficient adsorption capacity, and high conductivity to permit electrical manipulation. A prototype ETAS adsorbent composed of nanostructured binary polymeric surfaces that can undergo an electrically-induced hydrophilic-hydrophobic transition can provide programmable control of capture and release of neutral organics in a cyclic fashion. A quantitative energetic analysis of ETAS offers insights into the tradeoff between energy cost and separation extent through manipulation of electrical swing conditions. We also introduce a generalizable materials design approach to improve the separation degree and energetic efficiency simultaneously, and identify the critical factors responsible for such enhancement via redox electrode simulations and theoretical calculations of electron transfer kinetics. The effect of operation mode and multistage configuration on ETAS performance is examined, highlighting the practicality of ETAS and providing useful guidelines for its operation at large scale. The ETAS approach is energetically efficient, environmentally friendly, broadly applicable to a wide range of organic contaminants of various molecular structures, hydrophobicity and functionality, and opens up new avenues for addressing the urgent, global challenge of water purification and wastewater management. © 2018 The Royal Society of Chemistry.
英文关键词	Hydrophobicity; Nanostructures; Organic pollutants; Polymers; Separation; Water pollution; Electrical manipulation; Electrochemical process; Electron transfer kinetics; Hydrophobic transition; Multistage configuration; Programmable controls; Theoretical calculations; Wastewater management; Water treatment; adsorption; design; electrochemical method; electrode; hydrophobicity; organic pollutant; porosity; purification; reaction kinetics; theoretical study; water treatment
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190108
作者单位	Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Mao X.,Tian W.,Ren Y.,et al. Energetically efficient electrochemically tunable affinity separation using multicomponent polymeric nanostructures for water treatment[J],2018,11(10).
APA	Mao X..,Tian W..,Ren Y..,Chen D..,Curtis S.E..,...&Hatton T.A..(2018).Energetically efficient electrochemically tunable affinity separation using multicomponent polymeric nanostructures for water treatment.Energy & Environmental Science,11(10).
MLA	Mao X.,et al."Energetically efficient electrochemically tunable affinity separation using multicomponent polymeric nanostructures for water treatment".Energy & Environmental Science 11.10(2018).