Bioinspired fabrication of asymmetric wood materials for directional liquid manipulation and transport

Luo, Yuqiong; Song, Fei; Chen, Xu; Wang, Xiuli; Wang, Yu‐Zhong

doi:10.1016/j.cej.2019.123168

Cited by 34 publications

(14 citation statements)

References 50 publications

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“…The breakthrough pressure on the coated surface was smaller than that on the uncoated surface for all the samples, resembling the function of an electronic diode . The force due to the Laplace pressure on the uncoated side ( P L2 ) was smaller than that on the coated side ( P L1 ), so the required breakthrough pressure was significantly increased . The breakthrough pressures were found to increase with increasing thickness of the coating, which could be attributed to the longer hydrophobic channels for water penetration .…”

Section: Resultsmentioning

confidence: 80%

An All-Hydrophobic Fluid Diode for Continuous and Reduced-Wastage Water Transport

Huang

Jin

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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Directional water transport that occurs in natural insects and plants is important to both organisms and advanced science and technology. Despite the many studies conducted to facilitate directional liquid transport by constructing doublelayered hydrophilic/hydrophobic materials, it remains difficult to achieve continuous water transport and reduce liquid wastage due to the hydrophilic regions. Herein, a directional water transport fabric (DWTF) was fabricated using a simple single-side coating method based on entirely hydrophobic materials. With coating thicknesses of 13−29 μm, the fabric could guide the continuous water motion from the coated to the uncoated side and can be utilized as a "liquid diode". In addition, the DWTF exhibited a water wastage reduction during the transport process, benefiting from the intrinsic hydrophobic properties of the material. Moreover, a plausible mechanism of water transport is proposed to explain the water droplet transfer in the bilayered hydrophobic materials. Consequently, the resulting DWTF exhibited an excellent accumulative one-way transport capability (AOTC) of 965.7% and a desirable overall moisture management capability (OMMC) of 0.92. This work provides an avenue for fabricating smart fluid delivery materials to various applications such as flexible microfluidics, wound dressing, oil−water separation processes, and engineered desiccant materials.

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Section: Resultsmentioning

confidence: 80%

An All-Hydrophobic Fluid Diode for Continuous and Reduced-Wastage Water Transport

Huang

Jin

Liang

et al. 2021

ACS Appl. Mater. Interfaces

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show abstract

“…Inspired by the control of water droplet transport in the prickly pear cactus, Luo et al developed wood slices with asymmetric wettability on the front and back surfaces connected by channels with a wettability gradient between the surfaces [ 226 ]. When atomized microdroplets adhered to the hydrophobic surface, the droplets moved to the hydrophilic side by capillary force, wetted and spread on the hydrophilic surface, and subsequently fell due to gravity.…”

Section: Potential Applicationsmentioning

confidence: 99%

A review on control of droplet motion based on wettability modulation: principles, design strategies, recent progress, and applications

Tenjimbayashi

Manabe

2022

Science and Technology of Advanced Materials

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The transport of liquid droplets plays an essential role in various applications. Modulating the wettability of the material surface is crucial in transporting droplets without external energy, adhesion loss, or intense controllability requirements. Although several studies have investigated droplet manipulation, its design principles have not been categorized considering the mechanical perspective. This review categorizes liquid droplet transport strategies based on wettability modulation into those involving (i) application of driving force to a droplet on non-sticking surfaces, (ii) formation of gradient surface chemistry/structure, and (iii) formation of anisotropic surface chemistry/structure. Accordingly, reported biological and artificial examples, cutting-edge applications, and future perspectives are summarized.

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“…The lipophilicity of the modified wood aerogel in conjunction with an intrinsic CNT photothermal effect provided an optimal juxtaposition of adsorption, fast volatilization, and accelerated purification characterized by continuous removal of the oil from the aerogel in a gaseous form. [59] An asymmetric wood with wettability gradient along the wood channels and directional liquid transport property was developed by Luo et al [60] Raw softwood slices (1.8 mm in thickness and 30 mm in diameter) were first carbonized at 180 °C. Then one face of carbonized wood (CW) slice was treated by spraying polydimethylsiloxane (PMDS) solution with 1% concentration for several seconds (3, 6, 9, 12 s).…”

Section: Wood-based Morph Genetic Materialsmentioning

confidence: 99%

Nanocellulose-based composite materials for wastewater treatment and waste-oil remediation

Yuan¹,

Ling²,

Murugadoss³

et al. 2020

ES Food Agrofor.

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This review highlights the latest research studies about the use of lignocellulosic nanocellulose-based composites in the applications of wastewater treatment and waste-oil remediation. Three types of composites are described, including nanocellulose-based aerogels, nanocellulose-based membranes, and new wood-based morph-genetic materials. The fabrication and modification techniques to prepare these composites are introduced. The effectiveness and efficiency of these composites in the adsorption of heavy metal ions, dyes, and micropollutants, separation of oil and water, and catalytic degradation of organic pollutants are discussed, respectively. In addition, the challenges and opportunities of nanocellulose-based composites in these areas and the future research directions of lignocellulosic nanocellulose composites for wastewater treatment and waste-oil remediation are addressed.

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Bioinspired fabrication of asymmetric wood materials for directional liquid manipulation and transport

Cited by 34 publications

References 50 publications

An All-Hydrophobic Fluid Diode for Continuous and Reduced-Wastage Water Transport

An All-Hydrophobic Fluid Diode for Continuous and Reduced-Wastage Water Transport

A review on control of droplet motion based on wettability modulation: principles, design strategies, recent progress, and applications

Nanocellulose-based composite materials for wastewater treatment and waste-oil remediation

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