Over 10 kg m−2 h−1 Evaporation Rate Enabled by a 3D Interconnected Porous Carbon Foam

Li, Jinlei; Wang, Xueyang; Lin, Zheng‐Zhe; Xu, Ning; Li, Xiuqiang; Liang, Jie; Zhao, Wei; Lin, Renxing; Zhu, Bin; Liu, Guoliang; Lin, Zhifang; Zhu, Shining; Zhu, Jing

doi:10.1016/j.joule.2020.02.014

Cited by 275 publications

(209 citation statements)

References 41 publications

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“…[ 12–15 ] The directional freezing method, porous foams, and plant materials are used to produce or provide large channels for water and steam transport. [ 16–21 ] Special structures, including the Janus structure, [ 22,23 ] interconnected structure, [ 24–26 ] and salt collection structure, [ 6,27,28 ] are designed to prevent salt from crystallizing, thus ensuring long‐term evaporation. Multilayer and hierarchical structures are designed to enhance the thermal and light management abilities of the evaporators.…”

Section: Introductionmentioning

confidence: 99%

Artificial Trees Inspired by Monstera for Highly Efficient Solar Steam Generation in Both Normal and Weak Light Environments

Wang

Zhang

et al. 2020

Adv Funct Materials

100

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Solar steam generation has been extensively studied for its potential application in power generation and water treatment. Although some efficient evaporators have been developed, the challenge of the abrupt drop in the evaporator performance under outdoor environments remains to be overcome. The heteroblasty of Monstera and other climbers allows them to grow rapidly under the extreme shade of a tropical rainforest, inspiring the design of a high-efficiency evaporator that can function even in weak light environments. Herein, artificial trees that imitate the leaf fenestration of Monstera combined with the Chinese paper cutting technique exhibit the highest evaporation rate of 2.30 kg m −2 h −1. Moreover, under oblique incidence (from 0° to 75°) and dappled sunlight, the evaporation rates of artificial trees with leaf fenestration are 1.08-1.26 and 1.34-2.78 times those of artificial trees without leaf fenestration and a 2D evaporator, respectively. The excellent performance is attributed to high-efficiency light absorption, photothermal conversion, high evaporation area, and excellent light and thermal management abilities, which are achieved through leaf fenestration and efficient thermal recovery through multiple reflections of light and thermal radiation between the leaves. The design of the 3D hierarchical structure and leaf fenestration are also applicable for various light absorbents.

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Section: Introductionmentioning

confidence: 99%

Artificial Trees Inspired by Monstera for Highly Efficient Solar Steam Generation in Both Normal and Weak Light Environments

Wang

Zhang

et al. 2020

Adv Funct Materials

100

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“…Based on these characteristics, the sequential solar‐driven hygroscopic water harvesting technology based on the interfacial heating is expected to be used for freshwater production, particularly for areas that lack direct access to clean water. Additionally, due to the high photothermal conversion efficiency, interfacial heating is promising to be widely used in other fields, such as solar desalination, [ 101,108,124,138–144 ] wastewater treatment, [ 66,76,98,99,104,112,113,116,118,122,145–152 ] high‐salinity brine treatment, [ 153 ] power generation, [ 154–156 ] synergistic solar electricity‐water generation, [ 157 ] etc.…”

Section: Resultsmentioning

confidence: 99%

Advances in Solar‐Driven Hygroscopic Water Harvesting

Zhuang

Wang

et al. 2020

Global Challenges

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Water scarcity is one of the greatest global challenges at this time. Significant efforts have been made to harvest water from the air, due to widely available water sources present in the atmosphere. Particularly, solar‐driven hygroscopic water harvesting based on the adsorption–desorption process has gained tremendous attention because of the abundance of solar energy in combination with substantial improvements in conversion efficiency enabled by advanced sorbents, improved photothermal materials, interfacial heating system designs, and thermal management in recent years. Here, recent developments in atmospheric water harvesting are discussed, with a focus on solar‐driven hygroscopic water harvesting. The diverse structural designs and engineering strategies that are being used to improve the rate of the water production, including the design principles for sorbents with high adsorption capacity, high‐efficiency light‐to‐heat conversion, optimization of thermal management, vapor condensation, and water collection, are also explored. The current challenges and future research opportunities are also discussed, providing a roadmap for the future development of solar‐driven hygroscopic water harvesting technology.

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“…Compared with other carbonization processes, the furnace‐based process is convenient, controllable, and easy to manufacture on a large scale. [ 16 ] After calcination, the volume of compressed cylindrical CPS shrunk significantly with the increment of calcination temperatures, and simultaneously the color of samples turned from a wooden color to black ( Figure 2 a). In addition, the surfaces of CPS were apparently rough, which is attributed to the irregular shrinkage of wood chips calcined at high temperatures.…”

Section: Resultsmentioning

confidence: 99%

Turning Trash into Treasure: Pencil Waste–Derived Materials for Solar‐Powered Water Evaporation

et al. 2020

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Solar steam generation is regarded as one of the most attractive technologies to relieve the stress of freshwater storage. Low cost and scalable production of solar evaporators is a critical issue to be considered for practical applications. Herein, the recycling utilization of pencil wastes is proposed by a facile method. A self‐floating solar evaporator made of carbonized pencil wastes can achieve an evaporation rate of 1.2 kg m−2 h−1 and a light‐to‐vapor energy conversion efficiency of 82.2% under 1.0 sun. Meanwhile, the evaporator exhibits a self‐desalting property overnight due to its superior hydrophilicity. Furthermore, the evaporator manifests significantly effective solar evaporation performance in brine, organic dye solutions, as well as other harsh conditions. Considering the wide range of raw sources, low cost, scalable preparation, and effective solar evaporation performance, the all wood waste–based solar steam generator provides an inspiration for the recycling utilization of wood wastes and the promising development of environmentally friendly biomass‐based solar evaporators.

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Over 10 kg m−2 h−1 Evaporation Rate Enabled by a 3D Interconnected Porous Carbon Foam

Cited by 275 publications

References 41 publications

Artificial Trees Inspired by Monstera for Highly Efficient Solar Steam Generation in Both Normal and Weak Light Environments

Artificial Trees Inspired by Monstera for Highly Efficient Solar Steam Generation in Both Normal and Weak Light Environments

Advances in Solar‐Driven Hygroscopic Water Harvesting

Turning Trash into Treasure: Pencil Waste–Derived Materials for Solar‐Powered Water Evaporation

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