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Hydrophilic/Oleophilic Magnetic Janus Particles for the Rapid and Efficient Oil-Water Separation

机译：亲水/亲油性磁性Janus颗粒可快速有效地分离油水

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摘要

The separation of microsized oil droplets from water is strongly required by the environmental protection and petroleum industry. However, the separation of microsized oil droplets from water is often ignored. Herein, magnetic Janus particles are reported with a convex hydrophilic surface/concave oleophilic surface by emulsion interfacial polymerization and selective surface assembly, realizing the rapid and efficient separation of microscaled tiny oil droplets from water. These magnetic Janus particles exhibit significant abilities to separate microscaled oil droplets from water, which usually occurs within 120 s with a separation efficiency 99%. Theoretical and experimental results demonstrate that these magnetic Janus particles can capture tiny oil droplets to make them coalesce into larger ones during the process of separation. Further studies reveal that these Janus particles can self-assemble and closely pack onto the interface of larger oil droplets, acting as surfactants to stabilize them. Moreover, the shape effect of the Janus particle is demonstrated on the coalescence of the oil droplets.%1802493.1-1802493.8
机译：环境保护和石油工业强烈要求从水中分离微小的油滴。但是，通常忽略了将微小的油滴与水分离的方法。在本文中，据报道磁性Janus颗粒通过乳液界面聚合和选择性表面组装而具有凸出的亲水性表面/凹形亲油性表面，从而实现了从水中快速有效地分离出微小的微小油滴。这些磁性Janus颗粒具有显着的能力，可将微尺度的油滴与水分离，通常在120 s内发生，分离效率> 99％。理论和实验结果表明，这些磁性Janus颗粒可以捕获微小的油滴，使其在分离过程中聚结成较大的油滴。进一步的研究表明，这些Janus粒子可以自组装并紧密堆积在较大油滴的界面上，充当使它们稳定的表面活性剂。此外，证明了Janus颗粒的形状对油滴聚结的影响。％1802493.1-1802493.8

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  • 来源
    《Advanced Functional Materials》 |2018年第32期|1802493.1-1802493.8|共8页
  • 作者

    Song Yongyang; Zhou Jiajia; Fan Jun-Bing; Zhai Wenzhong; Meng Jingxin; Wang Shutao;

  • 作者单位

    Chinese Acad Sci, CAS Key Lab Bioinspired Mat & Interfacial Sci, CAS Ctr Excellence Nanosci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China;

    Beihang Univ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Sch Chem, Beijing 100191, Peoples R China;

    Chinese Acad Sci, CAS Key Lab Bioinspired Mat & Interfacial Sci, CAS Ctr Excellence Nanosci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, CAS Key Lab Bioinspired Mat & Interfacial Sci, CAS Ctr Excellence Nanosci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, CAS Key Lab Bioinspired Mat & Interfacial Sci, CAS Ctr Excellence Nanosci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China;

    Chinese Acad Sci, CAS Key Lab Bioinspired Mat & Interfacial Sci, CAS Ctr Excellence Nanosci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    emulsion interfacial polymerization; interfacial assembly; magnetic Janus particles; oil-water separation;

    机译：乳液界面聚合;界面组装;磁性Janus颗粒;油水分离;

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