Wettability by Ionic Liquids

Liu, Hongliang; Jiang, Lei

doi:10.1002/smll.201501526

Cited by 32 publications

(21 citation statements)

References 42 publications

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“…In the case of confinement of ILs nanoparticles in 1D nanochannels, researchers have made some attempts. Room‐temperature ILs have been greatly developed in recent years in a wide range of applications, whereas little is investigated about the wettability and phase transition of ILs . Many theoretical and experimental researches have been done to investigate the crystallization behavior of ILs .…”

Section: Wettability In 1d Nanochannelsmentioning

confidence: 99%

Wettability and Applications of Nanochannels

2018

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Wettability in nanochannels is of great importance for understanding many challenging problems in interface chemistry and fluid mechanics, and presents versatile applications including mass transport, catalysis, chemical reaction, nanofabrication, batteries, and separation. Recently, both molecular dynamic simulations and experimental measurements have been employed to study wettability in nanochannels. Here, wettability in three types of nanochannels comprising 1D nanochannels, 2D nanochannels, and 3D nanochannels is summarized both theoretically and experimentally. The proposed concept of “quantum‐confined superfluid” for ultrafast mass transport in nanochannels is first introduced, and the mostly studied 1D nanochannels are reviewed from molecular simulation to water wettability, followed by reversible switching of water wettability via external stimuli (temperature and voltage). Liquid transport and two confinement strategies in nanochannels of melt wetting and liquid wetting are also included. Then, molecular simulation, water wettability, liquid transport, and confinement in nanochannels are introduced for 2D nanochannels and 3D nanochannels, respectively. Based on the wettability in nanochannels, broad applications of various nanochannels are presented. Finally, the perspective for future challenges in the wettability and applications of nanochannels is discussed.

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Section: Wettability In 1d Nanochannelsmentioning

confidence: 99%

Wettability and Applications of Nanochannels

2018

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“…As shown in Figure , the WCA decreased evidently from nearly 75° for M‐0 to 57° for M‐ILHNTs‐3.0. The enhancement of membrane hydrophilicity could be explained by the migration of ILHNTs to membrane surface in phase inversion process, which would affect the separation and antifouling performance of membranes.…”

Section: Resultsmentioning

confidence: 99%

Improvement in antifouling and separation performance of PVDF hybrid membrane by incorporation of room‐temperature ionic liquids grafted halloysite nanotubes for oil–water separation

Zhang

Shu

Yang

et al. 2018

J of Applied Polymer Sci

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Novel hybrid poly(vinylidene fluoride) ultrafiltration membranes were fabricated via immersion precipitation method through the incorporation of the halloysite nanotubes functionalized with 1-methyl-3-(3-triethoxysilypropyl) imidazolium chloride. The modified halloysite nanotubes were confirmed by Fourier transform infrared spectrometer, thermogravimetric analysis, and transmission electron microscopy. The morphologies of hybrid membranes were characterized by atomic force microscopy and energy dispersive spectrometer, while the filtration and antifouling performance were investigated by means of porosity, mean pore radius, pure water permeability, rejection ratio, and flux recovery ratio. The addition of the modified halloysite nanotubes obviously improved the membrane hydrophilicity. Besides, the flux recovery ratios were as high as 96% for humic acid and 94% for bovine serum albumin after two filtration cycles. Finally, the modified membranes were used to separate diesel oil-water emulsions. The rejection ratio and flux recovery ratio were as high as 99% and 94%, respectively. The poly(vinylidene fluoride) membranes incorporated by the novel halloysite nanotubes provided a promising alternative for oil-water emulsions separation.

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“…Nevertheless, this approach remains attractive and elegant, as it could provide an easy, low-cost, and versatile process to metallize PSi. Hence, the purpose of this study is to identify a liquid medium: Capable of penetrating the diverse porous structures [ 14 ]; in which different metal precursors are soluble [ 15 , 16 ]; that does not prevent the reaction of these precursors with surface hydrides [ 17 ]; and in which additional reagents can be added to extend metal precursor decomposition [ 15 , 18 ]. …”

Section: Introductionmentioning

confidence: 99%

“…From these solutions, zero-valent metallic nanoparticles (NPs) are easily precipitated using appropriate reducing agents such as H 2 [ 19 , 20 , 21 , 22 ]. Moreover, ILs penetrate quite rapidly in porous materials [ 14 ]. Therefore, we investigate in this work the ability of imidazolium-based ILs containing organometallic (OM) precursors to metallize a variety of micro- to macro-porous silicon substrates.…”

Section: Introductionmentioning

confidence: 99%

An Efficient, Versatile, and Safe Access to Supported Metallic Nanoparticles on Porous Silicon with Ionic Liquids

Darwich

Haumesser

Santini

et al. 2016

IJMS

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The metallization of porous silicon (PSi) is generally realized through physical vapor deposition (PVD) or electrochemical processes using aqueous solutions. The former uses a strong vacuum and does not allow for a conformal deposition into the pores. In the latter, the water used as solvent causes oxidation of the silicon during the reduction of the salt precursors. Moreover, as PSi is hydrophobic, the metal penetration into the pores is restricted to the near-surface region. Using a solution of organometallic (OM) precursors in ionic liquid (IL), we have developed an easy and efficient way to fully metallize the pores throughout the several-µm-thick porous Si. This process affords supported metallic nanoparticles characterized by a narrow size distribution. This process is demonstrated for different metals (Pt, Pd, Cu, and Ru) and can probably be extended to other metals. Moreover, as no reducing agent is necessary (the decomposition in an argon atmosphere at 50 °C is fostered by surface silicon hydride groups borne by PSi), the safety and the cost of the process are improved.

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Wettability by Ionic Liquids

Cited by 32 publications

References 42 publications

Wettability and Applications of Nanochannels

Wettability and Applications of Nanochannels

Improvement in antifouling and separation performance of PVDF hybrid membrane by incorporation of room‐temperature ionic liquids grafted halloysite nanotubes for oil–water separation

An Efficient, Versatile, and Safe Access to Supported Metallic Nanoparticles on Porous Silicon with Ionic Liquids

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