Easily scaled-up photo-thermal membrane with structure-dependent auto-cleaning feature for high-efficient solar desalination

Xu, Ying; Liu, Dongqing; Xiang, Huilin; Ren, Sheng Feng; Zhu, Zhigao; Li, Dongmei; Xü, Hongbo; Cui, Fuyi; Wang, Wei

doi:10.1016/j.memsci.2019.05.068

Cited by 94 publications

(43 citation statements)

References 42 publications

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“…30,33,35,81 It can be clearly seen that various solar steam generation devices with high solar-to-vapor conversion efficiencies have been reported (such as carbon nanotubes of approximately 86.8%, 24 Ag of approximately 83%, 38 MoS 2 of approximately 80.1%) 35 ; however, both the high price of precious metal-based materials and the complicated synthesized methods of semiconductorbased materials are greatly hampered the practical application. 40,44,45,[58][59][60]62,63 40,44,45,[58][59][60]62,63 …”

Section: Resultsmentioning

confidence: 99%

“…For comparison, in Table 1, we summarized part of the solar-to-vapor conversion efficiencies of many recent works based on different photothermal materials, for instance, plasmonic metal materials, 1,28,78 ceramic-based materials, 8,36 carbon-based materials, 3,10,24,25 polymer materials, 40,44,45,[58][59][60]62,63 and semiconductor materials. 30,33,35,81 It can be clearly seen that various solar steam generation devices with high solar-to-vapor conversion efficiencies have been reported (such as carbon nanotubes of approximately 86.8%, 24 Ag of approximately 83%, 38 MoS 2 of approximately 80.1%) 35 ; however, both the high price of precious metal-based materials and the complicated synthesized methods of semiconductorbased materials are greatly hampered the practical application.…”

Section: Resultsmentioning

confidence: 99%

“…Obviously, the PCP with low-cost and easy fabrication process is one of the top-ranking solar steam generators with a high solar-to-vapor conversion efficiency of approximately 92.2% compared with other polymer materials. 40,44,45,[58][59][60]62,63…”

Section: Resultsmentioning

confidence: 99%

“…Xu et al constructed a membrane that combined PPy shells and cellulose fiber (PCF) paper with superhydrophilicity, showing solar-to-steam conversion efficiency of 90%. 62 Wang et al developed 3D conical PPy/poly (vinylidene difluoride) (PVDF) solar evaporator by CVDP, showing solar-to-heat conversion efficiency of up to 93.8% under irradiation of 1 sun. 63 However, the corresponding PPy/PVDF plane film showed a solar conversion efficiency of only about 54.3% under 1 sun.…”

Section: Discussionmentioning

confidence: 99%

“…1 Hao's group proposed an efficient water evaporation system with PPy and polystyrene foam (the hydrophilic PPy/cotton), which achieved solar-to-vapor conversion efficiency of 82.4% under 1 sun; however, the process of the hydrophilic PPy/cotton was not easy and needed a near-zero temperature. 62 Wang et al developed 3D conical PPy/poly (vinylidene difluoride) (PVDF) solar evaporator by CVDP, showing solar-to-heat conversion efficiency of up to 93.8% under irradiation of 1 sun. 61 More satisfactory solar-to-heat conversion efficiency of PPy-based solar evaporators has been reported recently.…”

Section: Introductionmentioning

confidence: 99%

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In situ chemo‐polymerized polypyrrole‐coated filter paper for high‐efficient solar vapor generation

et al. 2019

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It is well recognized that combining nonpotable water with solar energy to desalinate water and produce water vapor is an effective route to solve the shortage of fresh water. However, the solar vapor generation suffers from either low solar energy efficiency or complex and high-cost devices. Herein, we explore a black membrane based on polypyrrole (PPy) and filter paper to enhance solar-to-vapor conversion performance, thus providing a low-cost, stable, and strong efficient solar vapor generator. This device displays high solarto-vapor conversion efficiencies of up to approximately 92.2% and 95.6% under irradiation of 1 and 4 kW m −2 , respectively. Therefore, this paper-based high solar-to-vapor conversion and scalable evaporator provides a promising solution to the problem of freshwater scarcity and nonrenewable recourses.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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In situ chemo‐polymerized polypyrrole‐coated filter paper for high‐efficient solar vapor generation

et al. 2019

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Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination

Wang

et al. 2020

Adv Funct Materials

197

102

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Solar‐driven interfacial desalination (SDID), which is based on localized heating and interfacial evaporation, provides an opportunity for developing environmentally friendly and cost‐effective seawater thermal desalination. However, localized heating and rapidly generated interfacial steam may cause salt to accumulate on the evaporator's surface and block the channel of steam evaporation. Salt accumulation inevitably reduces the light absorption and service period of the solar absorber, resulting in a significant decrease in evaporation efficiency over time. Salt accumulation makes it difficult to produce SDID devices with high energy efficiency and long‐term stability for large‐scale use in remote poverty‐stricken areas. Therefore, the exploration of novel and effective strategies for addressing salt accumulation through both material design and structural engineering has attracted more attention in recent years. This review presents an overview of the state‐of‐the‐art advancements in salt‐resistant photothermal evaporation and discusses the critical issues for achieving salt mitigation SDID, focusing on the classification of salt mitigation strategies based on photothermal evaporation configurations, the basic mechanism of salt mitigation, and the architectural design of photothermal materials. Finally, the important challenges and prospects of SDID are discussed to providing a meaningful roadmap to efficient salt mitigation SDID.

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Fully Lignocellulosic Biomass‐Based Double‐Layered Porous Hydrogel for Efficient Solar Steam Generation

Lin

Wang

Hong

et al. 2022

Adv Funct Materials

135

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Solar-driven interfacial evaporation is an important approach for solving the issue of freshwater scarcity. However, the practical application of solar steam generation is hindered by high fabrication cost and environmental concerns regarding the petroleum-based materials. Herein, lignocellulose (celluloselignin composite) hydrogel (LCG) and lignin-derived carbon (LC) are used as the substrate and photothermal material, respectively, to construct a fully lignocellulose-based double-layered hydrogel (LC@LCG) evaporator. Results indicate that LC has an ultrahigh specific surface area and full-spectrum solar absorption of 98%. The presence of lignin can improve the hydrophilicity and maintain the capillary channels of the hydrogel, which tunes water into an intermediate state and reduces the vaporization enthalpy of water. Moreover, it ensures a high water transport rate in the hydrogel. Based on these advantages, the evaporation rate and photothermal conversion efficiency of hydrogel evaporator reach 1.84 kg m −2 h −1 under one sun and 86.5%, respectively. The lignocellulosic hydrogel evaporator could remove >99.95% of primary metal ions from seawater to generate fresh water, and shows outstanding salt resistance, durability, and long-term stability for desalination. This study demonstrates an eco-friendly and economic solution for continuous freshwater production from seawater using a fully lignocellulosic biomass-based hydrogel evaporator.

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Easily scaled-up photo-thermal membrane with structure-dependent auto-cleaning feature for high-efficient solar desalination

Cited by 94 publications

References 42 publications

In situ chemo‐polymerized polypyrrole‐coated filter paper for high‐efficient solar vapor generation

In situ chemo‐polymerized polypyrrole‐coated filter paper for high‐efficient solar vapor generation

Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination

Fully Lignocellulosic Biomass‐Based Double‐Layered Porous Hydrogel for Efficient Solar Steam Generation

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