High-performance solar-driven interfacial evaporation through molecular design of antibacterial, biomass-derived hydrogels

Líu, Hao; Liu, Ning; Bai, Huiying; He, Peigang; Niu, Ran; Gong, Jiang

doi:10.1016/j.jcis.2021.10.035

Cited by 133 publications

(54 citation statements)

References 66 publications

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“…Above phenomenon may be attributed to the fact that PPy-SS has penetrating water transport channels and good hydrophilicity, which allows continuous supply of water to the photothermal surface, and consequently promotes to the salt dissolution into seawater through the water transport channels under the action of diffusion and convection caused by different salt concentration. [33,71] The seawater desalination performance of evaporator plays a decisive role in its practical application of evaporators. Seawater used in this work was taken from the East China Sea.…”

Section: Resultsmentioning

confidence: 99%

A Stable Bilayer Polypyrrole‐Sorghum Straw Evaporator for Efficient Solar Steam Generation and Desalination

Cai

et al. 2022

Advanced Sustainable Systems

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seawater. Therefore, desalination has been considered to be one of the most promising technologies to solve the shortage of freshwater resources. [5,6] In recent years, many seawater desalination technologies, such as thermal desalination, [4] reverse osmosis desalination, [4,7] forward osmosis desalination, [8,9] and nanofiltration [10] were developed and used to obtain freshwater. These desalination technologies, however, consume a lot of fuel or electricity and indirectly increase carbon dioxide emissions. In addition, they are costly and not suitable for large-scale use in remote or underdeveloped water-deficient areas. [5,11,12] Therefore, it is urgent to develop a fresh and low cost desalination technology that can be driven by renewable clean energy. [13] Among all the renewable energy sources, solar energy has attracted extensive attention from researchers around the world because it can be applied to various water sources, such as seawater, rivers, and sewage to produce fresh water and is regarded as a feasible alternative to traditional fossil fuels. [11,14] Combining the inexhaustible solar energy with the available large amount of seawater, using the solar seawater desalination to produce low-cost and sustainable freshwater has become one of the effective ways to solve the worldwide problem of lack of fresh water resources. [11,15] However, seawater has a remarkably weak absorption rate of sunlight, resulting in wasting the majority of the energy and a low evaporation efficiency.In recent years, researchers have developed a solar interfacial evaporator, which can effectively improve the evaporation efficiency of solar evaporators compared to the traditional technology that uses solar energy to directly heat a large amount of water. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] For example, Dong et al. [32] developed reed leaves inspired silica nanofibrous aerogel interfacial evaporator that achieves an evaporation rate of 1.25 kg m −2 h −1 under 1 Sun. You et al. [33] developed a cellulose aerogel from natural wood to act as a solar interfacial evaporator, which can achieve an evaporation rate of 1.40 kg m −2 h −1 , corresponding to an evaporation efficiency of 83.4% under 1 Sun. Liu et al. [34] developed a carbonized chitosan aerogel interfacial evaporator that achieves an evaporation rate of about 1.76 kg m −2 h −1 and an evaporation efficiency of about 91.0% under 1 Sun.Among solar interfacial evaporators, interfacial evaporators with bilayer structure are one of the typical types. There are two Solar desalination is one of the most promising technologies for alleviating the shortage of fresh water. In recent years, interfacial solar evaporators have attracted much attention due to their higher energy efficiency compared to traditional technologies that directly heat bulk water. However, its development has been hampered by the complex preparation process, high costs, and low evaporation performance. Here, a bilayer biomass solar interfacial evaporator-polypyrrole-sorghum straw (...

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Section: Resultsmentioning

confidence: 99%

A Stable Bilayer Polypyrrole‐Sorghum Straw Evaporator for Efficient Solar Steam Generation and Desalination

Cai

et al. 2022

Advanced Sustainable Systems

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“…8(a)), they fabricated photothermal hydrogel by using PVA and chitosan (CS) as the matrix (MXene derivatives as photothermal materials), the evaporation enthalpy can be tailored by the hydrophilic groups in the hydrogel matrix, and the resulted hydrogel achieved a low evaporation enthalpy of 1,175 J•g −1 and high evaporation rate of 2.73 kg•m −2 •h −1 . According to Hao et al [116] (Fig. 8(b)), they found the sulfonate and hydroxyl groups in the sodium lignosulfonate can tune the content of intermediate water in PVA hydrogel for reducing the evaporation enthalpy, the evaporation rate of resulted hydrogel reached 2.09 kg•m −2 •h −1 under 1 sun irradiation, and the hydrogel also can produce drinking water from seawater by an outdoor solar seawater desalination device (per square meter is ca.…”

Section: Reduced Evaporation Enthalpymentioning

confidence: 99%

Towards highly salt-rejecting solar interfacial evaporation: Photothermal materials selection, structural designs, and energy management

Wei

Wang

Guo

et al. 2022

Nano Research Energy

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With the development of the industry, water pollution and shortage have become serious global problems. Owing to the abundance of seawater storage on earth, efficient solar-driven evaporation is a promising approach to relieve the freshwater shortage. The solar-driven evaporation has attracted tremendous attention due to its potential application in the seawater desalination and wastewater treatment fields. Also, the solar-driven evaporation efficiency can be enhanced by designing both solar absorbers and structures. Up to now, many strategies have been explored to achieve high solar-driven evaporation efficiency, mainly including the selection of photothermal conversion materials and structure optimization. In this review, the solar absorbers, structural designs, and energy management are proposed as the keys for high performance solar-driven evaporation systems. We report four kinds of solar absorbers based on different photothermal conversion mechanisms, substrate structure designs, and energy management methods for the purpose to achieve high conversion efficiency. And we also systematically investigate the available salt-rejections strategies for seawater desalination. This review aims to summarize the current development of efficient solar-driven evaporation systems and provide insights into the photothermal conversion materials, structural designs, and energy management. Finally, we propose the perspectives of the salt-rejection technologies for seawater desalination.

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“…In recent years, many photothermal materials have been investigated as solar evaporators including carbonaceous materials, 17,18 plasmonic structures, 19 biomass-based [20][21][22] and polymeric materials. 23 Meanwhile, some multifunctionality evaporators with better solar-to-vapor conversion efficiency have been reported. 24,25 Owing to the 3D layered structure of the wood sponge, the hazardous waste adsorbent can be modified with a hydrophilic polyvinyl alcohol (PVA) layer to avoid any heavy metals leaking and improve the hydrophilicity of the photothermal materials.…”

Section: Introductionmentioning

confidence: 99%

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Shi

et al. 2022

Environ. Sci.: Nano

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High-performance solar-driven interfacial evaporation through molecular design of antibacterial, biomass-derived hydrogels

Cited by 133 publications

References 66 publications

A Stable Bilayer Polypyrrole‐Sorghum Straw Evaporator for Efficient Solar Steam Generation and Desalination

A Stable Bilayer Polypyrrole‐Sorghum Straw Evaporator for Efficient Solar Steam Generation and Desalination

Towards highly salt-rejecting solar interfacial evaporation: Photothermal materials selection, structural designs, and energy management

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

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