Hierarchical structures hydrogel evaporator and superhydrophilic water collect device for efficient solar steam evaporation

Lei, Wenwei; Khan, Sovann; Chen, Lie; Suzuki, Norihiro; Terashima, Chiaki; Liu, Kesong; Fujishima, Akira; Liu, Mingjie

doi:10.1007/s12274-020-3162-5

Cited by 79 publications

(43 citation statements)

References 45 publications

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“…33 It is noted that a solar water purification system containing reduced graphene oxide (rGO) generally exhibits a relatively high evaporation rate (2.33 -2.72 kg m -2 h -1 ) and higher energy conversion efficiency ( > 90%) compared to the systems based on graphene and graphene oxide (GO). 59,63,74,77,[102][103][104][105][106][107][108][109][110][111][112][113][114][115][116][117][118][119] This result may be attributed to the residual As the youngest carbon nanomaterials, carbon dots (CDs) [132][133][134] have attracted attention due to their broad light absorption spectrum (200-800 nm) and high photothermal conversion efficiency (> 90%), so that CDs can meet the requirements of solar absorbers. 135 To further improve the performance of CDs for solar water purification, future development directions include structure adjustment and surface group modification without lowering crystallinity or wetting properties.…”

Section: Carbon-based Materialsmentioning

confidence: 99%

Recent developments of hydrogel based solar water purification technology

et al. 2022

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Section: Carbon-based Materialsmentioning

confidence: 99%

Recent developments of hydrogel based solar water purification technology

et al. 2022

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“…The hydrogels are important functional materials and have wide applications such as tissue engineering, soft devices, and sensors [1][2][3]. One key feature of hydrogels is the water-rich environment that can serve as the container for substance storage, transportation, and chemical reactions, but it is usually accompanied by poor mechanical properties [4].…”

Section: Introductionmentioning

confidence: 99%

Bioinspired flexible, high-strength, and versatile hydrogel with the fiberboard-and-mortar hierarchically ordered structure

Zhu

2021

Nano Res.

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The synthetic hydrogels with high water contents are promising for various applications, however, they usually exhibit low mechanical properties. In this work, inspired by the natural biological soft tissues, whose hierarchically ordered fibrous structures result in high strength and good flexibility, a flexible, high-strength, and versatile hydrogel with the fiberboard-and-mortar hierarchically ordered structure (HFMOS) is developed based on ultralong hydroxyapatite (HAP) nanowires and polyacrylic acid (PAA). The as-prepared HFMOS hydrogel has a high water content (~ 70 wt.%), dense structure, and excellent mechanical properties, and these properties are similar to those of the human cartilage and are superior to many hydrogels reported in the literature. The excellent mechanical properties of the HFMOS hydrogel originate from the combination of the fiberboard-and-mortar hierarchically ordered structure, reinforcement of ultralong HAP nanowires, strong interfacial strength, and multiple energy dissipation pathways. Moreover, thanks to the controllable components and injection procedure, the HFMOS hydrogel with a Janus structure is prepared for particular applications. The HFMOS hydrogel possesses abundant ordered water channels, and can be used for loading, release, and directed delivery of various functional substances. Thus, the as-prepared flexible, high-strength, and versatile HFMOS hydrogel possesses a great potential for various applications such as water purification, pollution treatment, biomedicine, nanofluidic devices, and high-performance structural materials.

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“…[ 4 ] The high‐efficiency solar steam evaporation by heat localization requires efficient broadband absorbing materials with efficient light‐to‐heat conversion, and advanced architecture with appropriate thermal management and excellent water pathway. [ 5 ] Various advanced materials including nanometallic materials, semiconductors, and carbon‐based materials have been used for photothermal water vaporization. [ 6 ] Especially, due to the merits of cheap, abundant, and excellent light absorption with high photothermal conversion efficiency, carbon‐based materials such as carbon nanotubes (CNTs), graphene, carbonized wood and their composites have been demonstrated to realize the high efficiency of photothermal conversion.…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole‐Reinforced N,S‐Doping Graphene Foam for Efficient Solar Purification of Wastewater

Ning

et al. 2021

Solar RRL

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Solar vapor generation is a sustainable and cost‐effective approach to addressing the issue of water shortage. However, the challenges of solar steam generation still exist for achieving a high evaporation efficiency combined with long‐term stability in the wastewater containing heavy metal ions and wide degrees of acidity and alkalinity (pH = 1–14). Herein, polypyrrole (PPy) loading on the N,S‐doped graphene oxide (N,S‐GO) foam is used for high‐efficiency solar evaporation of treating wastewater. With the advantages of excellent broadband solar absorption ( >97%), extremely low emissivity (0.70), and outstanding hydrophilicity, the N,S‐GO/PPy foam achieves a high evaporation efficiency of 90.5% under 1 sun illumination. More notably, the N,S‐GO/PPy foam has strong adsorption of heavy metal ions (Fe3+, Cu2+, and Cr6+) for treating wastewater synchronously evaporates at higher efficiencies of 94.7–98.4%. Interestingly, the high‐toxicity Cr6+ can be reduced to low‐toxicity Cr3+ effectively by the synergistic effect of N,S‐GO and PPy. In addition, the N,S‐GO foam shows a better long‐term resistance of acidity and alkalinity for 45 days. A new insight is offered into high‐efficiency solar evaporation for treating wastewater and water purification.

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Hierarchical structures hydrogel evaporator and superhydrophilic water collect device for efficient solar steam evaporation

Cited by 79 publications

References 45 publications

Recent developments of hydrogel based solar water purification technology

Recent developments of hydrogel based solar water purification technology

Bioinspired flexible, high-strength, and versatile hydrogel with the fiberboard-and-mortar hierarchically ordered structure

Polypyrrole‐Reinforced N,S‐Doping Graphene Foam for Efficient Solar Purification of Wastewater

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