Fabrication of a super-hydrophobic nanofibrous zinc oxide film surface by electrospinning

Ding, Bin; Ogawa, Tasuku; Kim, Jin-Ho; Fujimoto, Keiichiro; Shiratori, Seimei

doi:10.1016/j.tsf.2007.04.086

Cited by 134 publications

(94 citation statements)

References 29 publications

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“…42 All of these routes allow the formation of perfluorinated fibers on one step, although any other fibers can be treated in a second step coating a finished mat. 43 Such fiber structures are then highly hydrophobic and also oleophobic [ Fig. 1(e)].…”

Section: Electrospinningmentioning

confidence: 99%

The superhydrophobicity of polymer surfaces: Recent developments

Shirtcliffe

McHale

Newton

2011

J Polym Sci B Polym Phys

168

108

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Superhydrophobicity is the extreme water repellence of highly textured surfaces. The field of superhydrophobicity research has reached a stage where huge numbers of candidate treatments have been proposed and jumps have been made in theoretically describing them. There now seems to be a move to more practical concerns and to considering the demands of individual applications instead of more general cases. With these developments, polymeric surfaces with their huge variety of properties have come to the fore and are fast becoming the material of choice for designing, developing, and producing superhydrophobic surfaces.

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Section: Electrospinningmentioning

confidence: 99%

The superhydrophobicity of polymer surfaces: Recent developments

Shirtcliffe

McHale

Newton

2011

J Polym Sci B Polym Phys

168

108

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“…[9] Once the polymeric nanofibrous surface is completely covered with metal oxide layer, various kind of surface modification reactions such as anchoring, organic ligand attachment, particle decoration may be possible via sol-gel reactions, physical and/or chemical attachment. [11][12] Nanoparticle decoration onto the electrospun nanofibers provide a vast gallery for the examples of different methods to obtain novel materials for a wide range of applications. [13][14] Combination and uniqueness of the ALD method [15][16][17] together with electrospinning provided the fabrication of remarkably crystalline and thickness controlled nanoscale metal oxide layers on electrospun polymeric nanofibers.…”

Section: Introductionmentioning

confidence: 99%

Reusable and Flexible Heterogeneous Catalyst for Reduction of TNT by Pd Nanocube Decorated ZnO Nanolayers onto Electrospun Polymeric Nanofibers

Arslan

Eren

Bıyıklı³

et al. 2017

ChemistrySelect

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An effective method for the fabrication of well designed nanocomposite for the catalytic reduction of 2,4,6-trinitrotoluene (TNT) was developed. Here, cubic palladium (Pd) nanoparticles were utilized for enhancing the interface properties, attachment quality, catalytic yield and stability after the catalysis reactions. Ligand controlled facet growth by the Branions during thermal decomposition of the palladium-precursor resulted with cubic shaped average~13 nm palladium nanocubes (Pd NC). The anisotropic Pd NC were utilized to decorate the surface of the zinc oxide (ZnO) nanolayers deposited by atomic layer deposition (ALD) technique on the electrospun polyacrylonitrile (PAN) nanofibers. Due to the polymeric nature of the electrospun PAN nanofibers, Pd NC decorated nanoweb is highly flexible and has a high surface area. For the sustainable Pd NC decoration on the ZnO surfaces coated on PAN nanofibers, anchor points were formed by the functional thiol groups which can facilitate the Pd NC attachment and stability on the ZnO surface. The -OH and alkyl thiol groups obtained via sol-gel reactions positioned on the ZnO layer providing a better interface between ZnO and Pd NC which cannot be obtained by pristine PAN nanofibers. Additionally, due to the increased surface interaction, geometrical positioning on fibers for a better intermediate complex formation and stability via soft-soft interaction, Pd NC decorated flexible polymeric electrospun nanoweb provided enhanced catalytic reduction of TNT in aqueous medium.

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“…Electrospinning has also been widely employed (e.g. [34]). In all of these cases a porous surface with re-entrant microscopic geometries is created.…”

Section: Introductionmentioning

confidence: 99%

A statistical model for the wettability of surfaces with heterogeneous pore geometries

Brockway

Taylor

2016

Mater. Res. Express

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We describe a new approach to modeling the wetting behavior of micro-and nano-textured surfaces with varying degrees of geometrical heterogeneity. Surfaces are modeled as pore arrays with a Gaussian distribution of sidewall reentrant angles and a characteristic wall roughness. Unlike conventional wettability models, our model considers the fraction of a surface's pores that are filled at any time, allowing us to capture more subtle dependences of a liquid's apparent contact angle on its surface tension. The model has four fitting parameters and is calibrated for a particular surface by measuring the apparent contact angles between the surface and at least four probe liquids. We have calibrated the model for three heterogeneous nanoporous surfaces that we have fabricated: a hydrothermally grown zinc oxide, a film of polyvinylidene fluoride (PVDF) microspheres formed by spinodal decomposition, and a polytetrafluoroethylene (PTFE) film with pores defined by sacrificial polystyrene microspheres. These three surfaces show markedly different dependences of a liquid's apparent contact angle on the liquid's surface tension, and the results can be explained by considering geometric variability. The highly variable PTFE pores yield the most gradual variation of apparent contact angle with probe liquid surface tension. The PVDF microspheres are more regular in diameter and, although connected in an irregular manner, result in a much sharper transition from non-wetting to wetting behavior as surface tension reduces. We also demonstrate, by terminating porous zinc oxide with three alternative hydrophobic molecules, that a single geometrical model can capture a structure's wetting behavior for multiple surface chemistries and liquids. Finally, we contrast our results with those from a highly regular, lithographically-produced structure which shows an extremely sharp dependence of wettability on surface tension. This new model could be valuable in designing and evaluating processes for manufacturing liquid-repellent surfaces on an industrial scale.

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Fabrication of a super-hydrophobic nanofibrous zinc oxide film surface by electrospinning

Cited by 134 publications

References 29 publications

The superhydrophobicity of polymer surfaces: Recent developments

The superhydrophobicity of polymer surfaces: Recent developments

Reusable and Flexible Heterogeneous Catalyst for Reduction of TNT by Pd Nanocube Decorated ZnO Nanolayers onto Electrospun Polymeric Nanofibers

A statistical model for the wettability of surfaces with heterogeneous pore geometries

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