Ultra-robust carbon fibers for multi-media purification <i>via</i> solar-evaporation

Li, Tiantian; Fang, Qile; Xi, Xianfeng; Chen, Yousi; Liu, Fu

doi:10.1039/c8ta08829b

Cited by 147 publications

(62 citation statements)

References 37 publications

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“…To further eliminate the heat conduction losses, 2D cylindric steam generators have been developed by using a polymeric foam or wood with a low heat conductivity as a thermal barrier and self‐floating body (Figure b) . With this scheme, photothermal conversion efficiencies of 2D cylindric steam generators have reached up to 80–95% under one sun …”

Section: Introductionsupporting

confidence: 75%

A 3D Hemispheric Steam Generator Based on An Organic–Inorganic Composite Light Absorber for Efficient Solar Evaporation and Desalination

Chen

Zhang

et al. 2019

Adv Materials Inter

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Solar‐driven interfacial steam generation is emerging as a sustainable and environmental‐friendly technology for potential applications in sterilization, desalination, and wastewater treatment. Despite the impressive progress achieved at labs, only few designs specialize in ambient and outdoor applications. Herein, a 3D hemispheric steam generator composed of nanocarbon (CB):poly(methyl methacrylate) (PMMA) composite materials as a light‐absorber, which boosts the light absorption in a wide range of incident angles, is reported. Gratifyingly, the 3D hemispheric steam generator afford efficient water evaporation and high photothermal conversion efficiencies of ≈87% when employing moderate sunlight (0.75 sun) with varied incident angles (90°, 80°, and 65°) in a set of indoor measurements. The more hydrophobic surface of the light‐absorber enabled by PMMA leads to better durability and avoids significant salt accumulation for solar desalination. This work highlights the intriguing prospect of this novel 3D hemispheric design and elegant organic–inorganic composite concept to realize efficient clean water production for potential real‐world applications.

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Section: Introductionsupporting

confidence: 75%

A 3D Hemispheric Steam Generator Based on An Organic–Inorganic Composite Light Absorber for Efficient Solar Evaporation and Desalination

Chen

Zhang

et al. 2019

Adv Materials Inter

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“…At the same time, the high light absorption can be obtained, thereby ensuring that salt ions can flow back through the pores to the bulk water at night. [ 75,76 ] In addition to the size of the channels, the richness of the channels is also an essential actor. In thermodynamics, the migration of salt crystals to a large amount of seawater is caused by the potential chemical difference of salt concentrations.…”

Section: Salt Mitigation Strategiesmentioning

confidence: 99%

Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination

Wang

et al. 2020

Adv Funct Materials

208

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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“…(2019) documented the manufacturing of polystyrene‐based reformed carbon fibers, which showed thermal conversion efficiency of 92.5% (1 kW m −2 ) with very minute heat conduction loss of 3%. [ 164 ] The 1D water channel influenced by transpiration may cause a reduction in heat conduction loss and improvise the water channel matrix also. In 2017, Zhu et al.…”

Section: Efficient Heat‐to‐steam Conversion and Vapor Condensationmentioning

confidence: 99%

Nanoenabled Photothermal Materials for Clean Water Production

2020

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Solar‐powered water evaporation is a primitive technology but interest has revived in the last five years due to the use of nanoenabled photothermal absorbers. The cutting‐edge nanoenabled photothermal materials can exploit a full spectrum of solar radiation with exceptionally high photothermal conversion efficiency. Additionally, photothermal design through heat management and the hierarchy of smooth water‐flow channels have evolved in parallel. Indeed, the integration of all desirable functions into one photothermal layer remains an essential challenge for an effective yield of clean water in remote‐sensing areas. Some nanoenabled photothermal prototypes equipped with unprecedented water evaporation rates have been reported recently for clean water production. Many barriers and difficulties remain, despite the latest scientific and practical implementation developments. This Review seeks to inspire nanoenvironmental research communities to drive onward toward real‐time solar‐driven clean water production.

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Ultra-robust carbon fibers for multi-media purification via solar-evaporation

Abstract: Ultra-robust carbon fibers are fabricated for purification of multi-media, including oil-in-water emulsion, dyed organic solvent and seawater via solar-thermal evaporation.

Cited by 147 publications

References 37 publications

A 3D Hemispheric Steam Generator Based on An Organic–Inorganic Composite Light Absorber for Efficient Solar Evaporation and Desalination

A 3D Hemispheric Steam Generator Based on An Organic–Inorganic Composite Light Absorber for Efficient Solar Evaporation and Desalination

Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination

Nanoenabled Photothermal Materials for Clean Water Production

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