A Lotus‐Leaf‐Like Superhydrophobic Surface Prepared by Solvent‐Induced Crystallization

Zhao, Ning; Weng, Lei; Zhang, Xiaoyan; Xie, Qiang; Zhang, Xiaoli

doi:10.1002/cphc.200500698

Cited by 105 publications

(79 citation statements)

References 50 publications

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“…It has been reported that the hydrophobicity of an already hydrophobic material can be increased by structuring its surface at the nanometre scale 23 . Therefore, the hydrophobicity of porous BN nanosheets originates primarily from adsorption of organics from ambient atmosphere, which is then exacerbated into superhydrophobicity by the surface nanostructuring, the so-called 'Lotus effect' 24,25 . Superhydrophobicity allows the porous BN nanosheets to float on the water surface and are therefore easy to be collected.…”

Section: Synthesismentioning

confidence: 99%

Porous boron nitride nanosheets for effective water cleaning

et al. 2013

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Effective removal of oils, organic solvents and dyes from water is of significant, global importance for environmental and water source protection. Advanced sorbent materials with excellent sorption capacity need to be developed. Here we report porous boron nitride nanosheets with very high specific surface area that exhibit excellent sorption performances for a wide range of oils, solvents and dyes. The nanostructured material absorbs up to 33 times its own weight in oils and organic solvents while repelling water. The saturated boron nitride nanosheets can be readily cleaned for reuse by burning or heating in air because of their strong resistance to oxidation. This easy recyclability further demonstrates the potential of porous boron nitride nanosheets for water purification and treatment.

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Section: Synthesismentioning

confidence: 99%

Porous boron nitride nanosheets for effective water cleaning

et al. 2013

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“…2B) coating with rutile TiO2. The coated surface showed 1-µm rutile microspheres decorated with 20-nm to 100-nm nanospheres that are similar to the water repellent protrusions on the surface of a lotus leaf (Patankar 2004;Zhao et al 2006) …”

Section: Fig 1 Rates Of Weight Loss Of Uncoated (Bw) Hdtmos/mtmos-mentioning

confidence: 97%

Weathering Performance of Wood Coated with a Combination of Alkoxysilanes and Rutile TiO2 Heirarchical Nanostructures

Zheng¹,

Tshabalala²,

Li³

et al. 2015

BioResources

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The weathering performance of wood coated with a combination of rutile TiO2 hierarchical nanostructures and a sol-gel deposit of alkoxysilanes was determined by exposing three sets of specimens to UV light and water spray. The first set consisted of specimens coated with a mixture of methyltrimethoxysilane (MTMOS) and hexadecyltrimethoxysilane (HDTMOS). The second set consisted of specimens coated with nanostructural TiO2 followed by a mixture of MTMOS and HDTMOS. The third set consisted of uncoated control specimens. The wood coated with TiO2 followed by a mixture of MTDMOS and HDTMOS exhibited significantly less surface color change and weight loss as a result of UV lightinduced degradation and erosion from water spray in comparison with the other groups. However, the coated surfaces were gradually transformed from hydrophobic to hydrophilic. Despite this apparent weakness, the MTMOS/HDTMOS/TiO2 coating, with superior photostabilization properties and resistance to surface erosion, may be useful for improving the weathering performance of wood coated with semi-transparent wood stains.

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“…Our results indicate that the formation of the microsized protrusion is a consequence of the addition of coagulator and the disperse density of these protrusions depends on the amount of coagulator used. [12] A nucleation and growth mechanism was proposed to describe the formation of such a hierarchical structure. Compared with the natural lotus leaf, the artificial superhydrophobic polymer plate is robust and stable, since only the surface was changed by the solvent treatment while the matrix of the plastic plate retains its excellent mechanical properties.…”

Section: Biomimetic Superhydrophobic Surface By Solvent-induced Crystmentioning

confidence: 99%

Facile Creation of Biomimetic Systems at the Interface and in Bulk

et al. 2008

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Nature always gives us inspiration for the fabrication of functional materials by mimicking the structural design or stimuli‐responsive capability of biomaterials. However, the strict preparation conditions, multistep processes, and high cost of the methods to create biomimetic systems at the interface and in bulk limit their practical applications. Therefore, development of a simple, cheap, but effective method has become the focus of our research in this field. In this feature article, facile methods for creating lotus‐leaf‐like micro‐nano‐binary structured superhydrophobic or superamphiphobic surfaces based on different mechanisms, i.e., solvent‐induced phase separation of a polymer blend solution, self‐assembly of a copolymer micelle solution, and solvent‐induced crystallization, are summarized. Moreover, progress into the investigation on the special microstructures that induce unique wetting properties are also introduced. As an effective biomimetic bulk system, a unique swift stimuli‐responsive gel actuator has been developed under a non‐contact electronic field in air. Artificial muscles with path‐controlled or self‐governing long‐range locomotion can be realized by using these stimuli‐responsive polymer gels on the basis of the extraordinary driving mechanisms.

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A Lotus‐Leaf‐Like Superhydrophobic Surface Prepared by Solvent‐Induced Crystallization

Cited by 105 publications

References 50 publications

Porous boron nitride nanosheets for effective water cleaning

Porous boron nitride nanosheets for effective water cleaning

Weathering Performance of Wood Coated with a Combination of Alkoxysilanes and Rutile TiO2 Heirarchical Nanostructures

Facile Creation of Biomimetic Systems at the Interface and in Bulk

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