A Moisture-Penetrating Humidity Pump Directly Powered by One-Sun Illumination

Cao, Biye; Tu, Yaodong; Wang, Ruzhu

doi:10.1016/j.isci.2019.05.013

Cited by 34 publications

(26 citation statements)

References 45 publications

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“…To further evaluate the advantages of PAN/MIL@LiCl NFM for moisture absorption, the absorption capacity was quantitatively compared with previously reported desiccant materials (Fig. 3d) 3,23,24,28,[41][42][43] . Obviously, PAN/MIL@LiCl NFM in this work exhibited superior hygroscopicity at 25°C and various humidities compared with other desiccants.…”

Section: Resultsmentioning

confidence: 99%

“…Yan et al reported that the water vapor absorption capacity of MIL-101(Cr) reached 1.22 g g −1 at 25°C and 90% RH, and its superior water vapor absorption made it a promising water vapor adsorbent 23 . Cao et al proposed a silica gel-MIL-101(Cr)-based moisturepermeable panel prepared using a partial immersion method, which could reduce the indoor RH to a medium level 24 . However, the MIL-101(Cr) particles easily agglomerated, which reduced its water vapor transmission (WVT) and dehumidification capabilities.…”

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confidence: 99%

“…d A comparative chart of the moisture absorption capacity for some reported representative desiccant materials: PVA-LiCl NFM27 , IPN gel41 , and hydrogel42 . MIL-101(Cr)24 , MIL-101(Cr)@GO23 , Y-shp-MOF-53 , and CaCl 2 @UiO-6643 . e Optical photographs revealing surface moisture absorption, water oozing, and color change of PAN/MIL@LiCl NFM at 25°C and 90% RH.…”

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confidence: 99%

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Super hygroscopic nanofibrous membrane-based moisture pump for solar-driven indoor dehumidification

et al. 2020

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Desiccants play vital roles in dehumidification and atmospheric water harvesting; however, current desiccants have mediocre hygroscopicity, limited recyclability, and high energy consumption. Herein, we report a wood-inspired moisture pump based on electrospun nanofibrous membrane for solar-driven continuous indoor dehumidification. The developed moisture pump with multilayer wood-like cellular networks and interconnected open channels is composed of a desiccant layer and a photothermal layer. The desiccant layer exhibits an unprecedented moisture absorption capacity of 3.01 g g −1 at 90% relative humidity (RH), fast moisture absorption and transport rates, enabling atmospheric water harvesting. The photothermal layer shows a high solar absorption of 93%, efficient solar thermal conversion, and good moisture permeability, thus promoting water evaporation. The moisture pump efficiently reduces the indoor relative humidity to a comfort level (40-60% RH) under onesun illumination. This work opens the way to develop new-generation, high-performance nanofibrous membrane-based desiccants for energy-efficient humidity control and atmospheric water harvesting.

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confidence: 99%

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Super hygroscopic nanofibrous membrane-based moisture pump for solar-driven indoor dehumidification

et al. 2020

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“…Wang et al. proposed a novel humidity pumping concept based on a multilayer moisture‐permeable structure, which allows moisture transport with little heat loss [80] . They designed a proof‐of‐concept microscale prototype based on a desiccant film and a photothermal coating layer, which was successfully applied as a dehumidifying indoor system without any auxiliary unit, thus consuming no electricity.…”

Section: Key Strategies For the Next Generation Of Face Mask Developmentmentioning

confidence: 99%

Personalized Reusable Face Masks with Smart Nano‐Assisted Destruction of Pathogens for COVID‐19: A Visionary Road

Sio

Ding

Focșan

et al. 2021

Chemistry A European J

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The Coronavirus disease 2019 (COVID‐19) emergency has demonstrated that the utilization of face masks plays a critical role in limiting the outbreak. Healthcare professionals utilize masks all day long without replacing them very frequently, thus representing a source of cross‐infection for patients and themselves. Nanotechnology is a powerful tool with the capability to produce nanomaterials with unique physicochemical and antipathogen properties. Here, how to realize non‐disposable and highly comfortable respirators with light‐triggered self‐disinfection ability by bridging bioactive nanofiber properties and stimuli‐responsive nanomaterials is outlined. The visionary road highlighted in this Concept is based on the possibility of developing a new generation of masks based on multifunctional membranes where the presence of nanoclusters and plasmonic nanoparticles arranged in a hierarchical structure enables the realization of a chemically driven and on‐demand antipathogen activities. Multilayer electrospun membranes have the ability to dissipate humidity present within the mask, enhancing the wearability and usability. The photothermal disinfected membrane is the core of these 3D printed and reusable masks with moisture pump capability. Personalized face masks with smart nano‐assisted destruction of pathogens will bring enormous advantages to the entire global community, especially for front‐line personnel, and will open up great opportunities for innovative medical applications.

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“…近年来, 结合原位红外光谱 [30] 、水吸附状态下的单晶结构解析 [31] 、同步辐射 X 射线衍射 [32] 、魔角旋转核磁共振 [33] 等表征手段, 研究者们从宏观到微观对 MOFs 材料的水稳定性和水吸附行为及机制进行了大量研究, 并创新性地开发了吸水性 MOFs 在沙漠地区捕获空气中的水蒸气以生产饮用水 [ 3 4 -3 8 ] 、吸附式热泵和冷却器 [39][40][41] 、室内湿度调节 [31] [3,42] (图 1). MOFs 材料结合了传统无机材料和有机材料的特图 1 MOFs 材料的基本构筑单元, 蓝色正方体表示框架中的金属离子或团簇, 灰色柱子表示有机配体.…”

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Water Adsorption Properties and Applications of Stable Metal-organic Frameworks

Zhang¹,

Li²,

Xinning³

et al. 2020

Acta Chim. Sinica

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Metal-organic frameworks (MOFs), featuring the ultrahigh surface area, high porosity, tunable geometrical and chemical properties, show potential applications in gas adsorption/separation, heterogenous catalysis, etc. As the ubiquity of water vapor in the ambient environment and industrial gas streams, it is necessary to study on interaction mechanism between MOFs and water molecules and develop highly water-stable MOFs with desirable water adsorption/desorption behaviors. It not only has the scientific significance, but also great importance in promoting the practical applications of MOFs. Given the tailorable abilities of pore size, pore volume, cavity hydrophilicity and water stability, MOFs provide unprecedented advantages to explore the well-defined porous sorbents in molecular level, which facilitates the realization of reversible water vapor uptake and release at expected relative pressure and temperature together with high working capacity. For now, a wide range of hydrolytically stable MOFs including high-valence metal (e.g. Cr 3＋ , Al 3＋ , Zr 4＋ , Ti 4＋ ) based frameworks have emerged as the advanced and promising porous sorbents for energy efficient applications, by utilizing water as eco-friendly adsorbate media and renewable heat. This review focuses on the following aspects: (1) the degradation mechanism of MOFs in liquid phase of water and the design concepts of hydrolytically stable MOFs by modulating their coordination bond based on the Pearson' hard/soft acid/base principle; (2) the physical or chemical water ad/desorption properties of MOFs; (3) the classification of numerous MOFs sorbents and conventional desiccants based on their hydrophilicity, which is approximately reflected by the relative humidity (RH) value of the inflection points (the RH where the steep uptake starts) in isotherms; (4) a variety of water adsorption-based applications of MOFs such as industrial gas dehydration, drinking water harvesting in the desert area, adsorption-based heat pump and indoor humidity regulation. Finally, the research priorities and development outlook are summarized and the future challenge with respect to water adsorption-based applications for the next-generation MOFs are outlined. Keywords metal-organic frameworks; water stability; water vapor adsorption; water vapor desorption; adsorption mechanism 1 引言自 20 世纪 90 年代至今, 金属有机框架材料(metalorganic frameworks, 简称 MOFs)的快速发展和应用研究令人瞩目. 作为一种多孔结晶材料, MOFs 材料具有丰富的孔道结构、超高的比表面积(最高可达 7839 m 2 • g -1 )、低密度性(可低至 0.13 g•cm -3 )以及无机构筑单元和有机配体设计组合的多样性 [1][2][3][4] . 这些特点使得 MOFs 材料在气体吸附与分离 [5][6][7][8][9][10] 、能源气体储存与转化 [11][12][13][14] 、催化 [9,[15][16][17][18][19][20] 、环境污染物控制 [21][22][23][24][25][26][27] 、传感检测 [28] 等领域展现出潜在的应用价值. 然而在上述吸附、分离与催化

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A Moisture-Penetrating Humidity Pump Directly Powered by One-Sun Illumination

Cited by 34 publications

References 45 publications

Super hygroscopic nanofibrous membrane-based moisture pump for solar-driven indoor dehumidification

Super hygroscopic nanofibrous membrane-based moisture pump for solar-driven indoor dehumidification

Personalized Reusable Face Masks with Smart Nano‐Assisted Destruction of Pathogens for COVID‐19: A Visionary Road

Water Adsorption Properties and Applications of Stable Metal-organic Frameworks

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