Dual‐Zone Photothermal Evaporator for Antisalt Accumulation and Highly Efficient Solar Steam Generation

Wu, Xuan; Wang, Yida; Pan, Wei‐Ping; Zhao, Jingyuan; Lü, Yi; Yang, Xiaofei; Xu, Haolan

doi:10.1002/adfm.202102618

Cited by 278 publications

(161 citation statements)

References 79 publications

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“…An ideal solar steam generation system should be capable of efficient solar energy absorption and high solar-thermal conversion efficiency; it must also possess excellent thermal management performance, efficient water transfer capability, superior salt resistance, long-term stability, and scalable production [10][11][12][13][14]. Researchers have proposed the following several approaches to optimize the different functional components of solar steam generation evaporators.…”

Section: Introductionmentioning

confidence: 99%

Nature Inspired MXene-Decorated 3D Honeycomb-Fabric Architectures Toward Efficient Water Desalination and Salt Harvesting

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Section: Introductionmentioning

confidence: 99%

Nature Inspired MXene-Decorated 3D Honeycomb-Fabric Architectures Toward Efficient Water Desalination and Salt Harvesting

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“…As a result, with less heat loss, the evaporation rate of hydrophobic association hydrogel is higher than that of C-CAHs (Figure 8o). More recently, Wu et al 163 reported a multi-layer spherical evaporator composed of a PS core and multi-layer outer coatings (PS-cellulose-PDA-PPy-PDA). This design reduces its density and restricts water transport only through the outer hydrophilic layers.…”

Section: Please Do Not Adjust Marginsmentioning

confidence: 99%

“…8o). More recently, Wu et al 163 reported a multi-layer spherical evaporator composed of a PS core and multi-layer outer coatings (PS–cellulose–PDA–PPy–PDA). This design reduces its density and restricts water transport only through the outer hydrophilic layers.…”

Section: Solar–thermal Conversion Enhancementmentioning

confidence: 99%

“…43,112 Guo et al 184 recently attached catechol groups to the CTS hydrogel for hydrogen peroxide (a broad-acting antibacterial agent) generation, combining with the synergistic effect of quinone-modified AC, to enhance the anti-fouling properties and guarantee 3 months of performance maintenance. There are numerous methods to improve the anti-crystalline fouling ability, including the construction of the Janus structure 130,165 and the umbrella-shaped platform, 91 the use of ions rejection polymer, 85,152,169 the introduction of bubbles in the middle section, 140 the weight imbalance sensitive spherical platform capable of rotating and renewing the evaporation surface, 163 the millineedle array on the surface for site-specific salt crystallization without salt clogging 155 and so on. In addition, the self-floating hydrogel platform is out of the external support substrate, which is not conducive to water transport, usually by adding low-density materials ( i.e.…”

Section: Future Research Roadmapmentioning

confidence: 99%

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Recent developments of hydrogel based solar water purification technology

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“…[38,39] Meanwhile, the sidewall without light irradiation also undergoes a cold evaporation process, thus the temperature of the sidewall is lower than the ambient temperature, and energy can be collected from the environment. [40,41] The advantage of the 3D structure is that the Solar steam generation (SSG) has attracted increasing interest due to its huge potential in seawater desalination. However, SSG performance is not yet satisfactory due to limited photothermal efficiency and crude thermal management.…”

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Highly‐Efficient Solar Steam Generation with Real Time Salinity Monitoring for Seawater Desalination

Xiong

Dong

et al. 2021

Advanced Sustainable Systems

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The annual solar radiation energy is equivalent to 1000 times the energy consumed by all human beings in the same period. [5] Therefore, it is believed that using solar energy to drive water purification is an ideal solution to the increasingly serious shortage of clean water. [6,7] In particular, the latest development of interfacial solar steam generation (SSG) has revived this traditional technology. [8][9][10][11][12] The design of solar evaporator is the key to improving the interfacial SSG efficiency. [13][14][15][16][17][18][19][20] In recent years, various photothermal materials (PTMs) have been developed and used for SSG. The PTMs for SSG can be generally classified into three categories, that is, plasma metals, [9,[21][22][23][24][25] semiconductors, [26][27][28][29] and carbon-based materials, [8,[30][31][32][33][34] which have broadband light absorption covering from visible to near-infrared (IR) and significant photothermal conversion ability. In a typical SSG, photothermal membranes with flat 2D flat shapes are used, which are installed on the air-water interface for water evaporation. [8][9][10] For example, Shan et al. reported an SSG system based on porous reduced graphene oxide (rGO) membrane. The roughness of the light-absorbing surface was designed to enhance the solar light collection capabilities, so as to improve water evaporation efficiency. [10] However, the evaporation rate is only 1.33 kg m −2 h −1 . In addition to the efforts devoted to the development of PTMs with high photothermal efficiency, the thermal management of the SSG system is also very important. An additional layer with low thermal conductivity (such as polystyrene foam) was placed under the PTMs to prevent heat loss into the bulk water, so that to increase the heat used for evaporation of the interfacial water. [35,36] Although significant progress has been made in the above two aspects in recent years, the energy efficiency of the 2D structured PTMs has been pushed to the theoretical limit. [35,37] To further improve the energy efficiency, 3D photothermal structures were proposed and designed. For example, when a 3D cylinder is presented under vertical light irradiation instead of a 2D photothermal surface, the photothermal effect on the top surface drives the interfacial SSG. [38,39] Meanwhile, the sidewall without light irradiation also undergoes a cold evaporation process, thus the temperature of the sidewall is lower than the ambient temperature, and energy can be collected from the environment. [40,41] The advantage of the 3D structure is that the Solar steam generation (SSG) has attracted increasing interest due to its huge potential in seawater desalination. However, SSG performance is not yet satisfactory due to limited photothermal efficiency and crude thermal management. In addition, real-time salinity monitoring is still lacking. Herein, inspired by the transpiration of trees, an umbrella-shaped 3D structure is designed for high-performance SSG. The water evaporation rate under one sun irradiation is as high a...

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Dual‐Zone Photothermal Evaporator for Antisalt Accumulation and Highly Efficient Solar Steam Generation

Cited by 278 publications

References 79 publications

Nature Inspired MXene-Decorated 3D Honeycomb-Fabric Architectures Toward Efficient Water Desalination and Salt Harvesting

Nature Inspired MXene-Decorated 3D Honeycomb-Fabric Architectures Toward Efficient Water Desalination and Salt Harvesting

Recent developments of hydrogel based solar water purification technology

Highly‐Efficient Solar Steam Generation with Real Time Salinity Monitoring for Seawater Desalination

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