An Ion‐Induced Low‐Oil‐Adhesion Organic/Inorganic Hybrid Film for Stable Superoleophobicity in Seawater

Xu, Li-Ping; Zhao, Jing; Su, Bin; Liu, Xueli; Peng, Jitao; Liu, Yibiao; Liu, Hongliang; Gao, Yang; Jiang, Lei; Wen, Yongqiang; Zhang, Xueji; Wang, Shutao

doi:10.1002/adma.201203461

Cited by 126 publications

(89 citation statements)

References 45 publications

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“…Since the pioneering work of Jiang and co-workers 3 various superhydrophobic/superoleophilic materials have been developed for oil/water separation of oil-rich mixtures, including porous polymer membranes, 4 metal mesh, 3,[5][6][7] carbon nanotube network films 8 and polymer-nanoparticle composites. 9 Inspired by the oleophobicity of fish scales, several additional superhydrophilic/underwater superoleophobic materials have been proposed [10][11][12][13][14][15][16] in water-rich mixtures that allow water infiltration but prevent oil penetration when used underwater. These superhydrophilic/underwater superoleophobic materials [17][18][19] may very well solve the problems of oil blocking that occurred in the system of water/oil with lower density than water during the separating process in conventional superhydrophobic/superoleophilic oil/water-separating materials.…”

Section: Introductionmentioning

confidence: 99%

A pH-responsive smart surface for the continuous separation of oil/water/oil ternary mixtures

2014

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To handle the serious issue of increasing oil spill accidents, many strategies have been proposed to either clean spilt oil or separate water/oil mixture. Especially, superhydrophilic/underwater superoleophobic smart materials have recently shown advantages in overcoming problems of oil blocking and water barriers during conventional oil/water-separating process of oil-rich mixtures with superhydrophobic/superoleophilic materials. However, to the best of our knowledge, no prior reports have detailed smart materials with the wetting properties of superhydrophobic/superoleophilic that can be applied in continuous in situ separations of oil/water/oil ternary mixtures, which are common in practical oil spill cases. Herein, we describe the fabrication and efficacy of a pH-responsive smart device for continuous in situ separations of such oil/water/oil ternary mixtures without the need for ex situ treatments. In air, the superhydrophobic/superoleophilic surface of the device allowed dichloromethane to permeate through while preventing water from passing. The superhydrophilicity/underwater superoleophobicity of the device surface following alkaline treatments prevented the passage of hexane while allowing water to penetrate the device.

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Section: Introductionmentioning

confidence: 99%

A pH-responsive smart surface for the continuous separation of oil/water/oil ternary mixtures

2014

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“…Wang and co-workers prepared a low-oil-adhesion organicinorganic hybrid films that could be tuned by copresence of ions (Figure 24). 343 These films have stable superoleophobicity in seawater. Organicinorganic hybrid films from polyelectrolytes and citrate-capped Au nanoparticles were assembled through LbL method at high ionic strengths.…”

Section: Chemical and Biochemical Applicationsmentioning

confidence: 99%

Layer-by-layer Nanoarchitectonics: Invention, Innovation, and Evolution

et al. 2013

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Materials fabrication with nanoscale structural precision based on bottom-up-type self-assembly has become more important in various current disciplines in chemistry including materials chemistry, organic chemistry, physical chemistry, analytical chemistry, biochemistry, colloid and surface chemistry, and supramolecular chemistry. Although the design of new materials based on nanoscale self-assembly is anticipated as a key concept, preparing complete three-dimensional structures at nanoscale precision remains a difficult target using current technologies. Rather, dimension-reduced approaches such as layering of two-dimensional nanostructures into precisely controlled lamellar nanomaterials are currently achievable. In particular, layer-by-layer (LbL) assembly is known as a highly versatile method for fabrication of controlled layered structures from various kinds of component materials using very simple, inexpensive, and rapid procedures. Therefore, fabrication of multilayer films through the LbL deposition process has attracted growing interest from various research communities. The high versatility and flexibility of LbL assembly is continuously creating new concepts, new materials, new procedures, and new applications. In this highlight review, we focus on nanoarchitectonics by LbL assembly. After an initial introduction on the invention and a brief history of the LbL assembly technique, innovations and the evolution of the technique are described based mainly on recent examples, which are categorized into two sections: (i) developments in methodology (technical, material, and phenomenological aspects with expansion of concept) and (ii) progress in applications (physical, chemical/biochemical, and biomedical applications).

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“…[ 7 ] Moreover, since artifi cial hydrogels are usually built up by polymerization, monomers with diverse functional groups can be incorporated into the crosslinked network to endow hydrogels with stimuliresponsive properties. [ 8 ] Beside the LLS system, an air/water/ oil/solid (AWOS) four-phase system with special wettability and novel function has been reported recently. [ 9 ] In Gao's work, an air fi lm was trapped on solid surface underwater through re-entrant superhydrophobic structure.…”

mentioning

confidence: 99%