Graphene-based biomimetic array film for simultaneous fog water harvesting and wind power generation

Huang, Tsung Han; Shih, Mu-Jie; Chen, Yi-Yun; Austria, Hannah Faye M.; Setiawan, Owen; Wu, Chunrui; Lu, Xiaolong; Zhang, Lin; Hung, Wei-Song

doi:10.1016/j.cej.2023.146519

Cited by 8 publications

(1 citation statement)

References 67 publications

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“…The hydrophilic projections facilitate droplet trapping and condensation, while the hydrophobic surface facilitates droplet transportation. 19 The spines of the cactus possess wettability differences and Laplace pressure gradients, and it is this synergistic effect that makes it a master of water collection in the desert. 20 Spider silk is unique in that the periodic structure of its spindle knot drives the directional transport of water droplets, enabling the collection of water from the air.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Fog Collector with Hybrid and Gradient Wettabilities

Tian,

Fu,

Guo

2024

ACS Appl. Mater. Interfaces

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Water scarcity is a global problem and collecting water from the air is a viable solution to this crisis. Inspired by Namib Desert beetle, leaf venation and spider silk, we designed an integrated biomimetic system with hybrid wettability and wettability gradient. The hybrid hydrophilic–hydrophobic wettability design that bionomics desert beetle’s back can construct a three-dimensional topography with a water layer on the surface, expanding the contact area with the fog flow and thus improving the droplet trapping efficiency. The venation-like structure with wettability gradient not only provides a planned path for water transportation, but also accelerates water removal under the synergistic effect of gravity and wettability driving force, thus further improving the surface regeneration rate. The collector combines droplet capture, coalescence, transportation, separation, and storage capabilities, which provides new ideas for the design of future high-efficiency fog collectors.

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Section: Introductionmentioning

confidence: 99%

Biomimetic Fog Collector with Hybrid and Gradient Wettabilities

Tian,

Fu,

Guo

2024

ACS Appl. Mater. Interfaces

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3D Bionic Water Harvesting System for Efficient Fog Capturing and Transporting

Zhang,

Chen,

Xie

et al. 2024

Adv Funct Materials

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Fog harvest has emerged as a direct and efficient water harvesting technology to relieve the intense pressure of freshwater scarcity worldwide. With the vagaries of climate and increasing amount of energy consumption, high‐efficiency fog harvest devices focus on the fast water droplet capture and transportation are highly desired. In this study, a novel harp structure is developed using cross‐twisted copper filaments arranged in a spatial triangular pattern to enhance water droplet capture and transportation. Inspired by the natural differences in Laplace pressure observed in cactus and spider silks, this design accelerates the movement of water bridges. Besides, drawing on the fruit waxes on the surface of hogweed and blueberries, a paraffin wax coating is applied on the copper sheet frame to create a solid slip frame, improving the synergy between filament capture and frame transportation. The monolithic fog collector (MFC) thus achieves a significant increase in fog harvest efficiency and demonstrates excellent durability. Integration of the MFCs into a 3D high‐efficiency fog harvest system results in a harvest rate of 0.5027 g cm−2 min−1, showing promise for practical applications due to its durability, simplicity, and environmental friendliness.

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Multifunctional Wood Composite Aerogel with Integrated Radiant Cooling and Fog–Water Harvesting for All‐Day Building Energy Conservation

Yu,

Wei,

Pang

et al. 2024

Adv Funct Materials

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Passive radiative cooling, as a cooling technique with no energy input, can continuously radiate heat into the supercooled universe. However, the continuous cooling effect tends to cause the problem of nighttime overcooling. Moreover, non‐renewable radiative cooling materials and energy‐intensive processing methods lead to increased carbon emissions and resource consumption. Therefore, there is an urgent need to develop a renewable and environmentally friendly self‐adaption radiative cooling thermal management material. In this paper, a high‐performance self‐adaption thermal management wood composite aerogel material is designed and prepared by in situ growth of multi‐scale silicon dioxide on wood. The constructed passive radiative cooling material has a sub‐ambient cooling effect of up to 13.5 °C and 20.2 °C during daytime in winter and summer, respectively. Meanwhile, it has a certain thermal insulation performance (2.0 °C above ambient) due to low thermal conductivity (0.063370 ± 0.000329 W m−1 k−1) at night in winter. In addition, the material is also suitable for fog–water harvesting (fog–water harvesting rate of 59.27 ± 0.76 mg min−1) due to its hydrophobicity. This work can significantly promote the practical application of passive radiative cooling materials.

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Graphene-based biomimetic array film for simultaneous fog water harvesting and wind power generation

Cited by 8 publications

References 67 publications

Biomimetic Fog Collector with Hybrid and Gradient Wettabilities

Biomimetic Fog Collector with Hybrid and Gradient Wettabilities

3D Bionic Water Harvesting System for Efficient Fog Capturing and Transporting

Multifunctional Wood Composite Aerogel with Integrated Radiant Cooling and Fog–Water Harvesting for All‐Day Building Energy Conservation

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