Structure Architecting for Salt‐Rejecting Solar Interfacial Desalination to Achieve High‐Performance Evaporation With In Situ Energy Generation

Advanced Science, Год журнала: 2020, Номер 7(9)

Опубликована: Март 31, 2020

The past few years have witnessed a rapid development of solar-driven interfacial evaporation, promising technology for low-cost water desalination. As today, solar-to-steam conversion efficiencies close to 100% or even beyond the limit are becoming increasingly achievable in virtue unique photothermal materials and structures. Herein, cutting-edge approaches summarized, their mechanisms structure architecting uncovered order achieve ultrahigh efficiency. Design principles enhance evaporation performance currently available salt-rejection strategies long-term desalination systematically investigated. guidelines utilize every component solar systems simultaneous situ energy generation also revealed. Finally, opportunities challenges future works this field discussed concluded.

Язык: Английский

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

Advanced Functional Materials, Год журнала: 2021, Номер 31(34)

Опубликована: Июнь 18, 2021

Abstract Interfacial solar steam generation offers a promising and cost‐effective way for saline water desalination. However, salt accumulation deposition on photothermal materials during brine evaporation is detrimental to the stability sustainability of evaporation. Although several antisalt strategies are developed, it difficult simultaneously achieve high rates ( > 2.0 kg m −2 h −1 ) energy efficiencies. In this study, self‐rotating evaporator with dual zones (i.e., high‐temperature low‐temperature zones) developed. This sensitive weight imbalance < 15 mg) thus able quickly respond by rotation refresh surface, while optimize nexus evaporation, realizing excellent salt‐resistant performance rate (2.6 ), which can significantly contribute real‐world application technology.

Язык: Английский

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Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination

Advanced Functional Materials, Год журнала: 2020, Номер 31(8)

Опубликована: Ноя. 10, 2020

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

Язык: Английский

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Carbon Materials for Solar Water Evaporation and Desalination

Small, Год журнала: 2021, Номер 17(48)

Опубликована: Июнь 6, 2021

Abstract Seawater desalination is viewed as a promising solution to world freshwater scarcity. Solar assisted proposed overcome the high energy consumption in current technologies, it uses abundant and sustainable solar only input. Interfacial vapor generation (SVG) has attracted considerable research interest due its conversion efficiency, simple implementation, cost‐effectiveness. Among all candidate materials for evaporators, carbon‐based stand out their intrinsic absorption, highly tunable structure, easy preparation, low cost, earth‐abundancy. In this review, recent progress on development of interfacial SVG summarized. First, brief introduction basic design principles system presented. Then, efforts from artificial structures bioinspired configurations, focusing structure–function relationship are highlighted. Strategies designing antisalt‐fouling systems also Last, challenges opportunities evaporation technology elaborated.

Язык: Английский

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Passive, high-efficiency thermally-localized solar desalination

Energy & Environmental Science, Год журнала: 2021, Номер 14(4), С. 1771 - 1793

Опубликована: Янв. 1, 2021

This review summarizes recent advances in passive thermally-localized solar desalination and provides a roadmap for more efficient, reliable, commercially feasible technologies.

Язык: Английский

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Highly efficient and salt rejecting solar evaporation via a wick-free confined water layer

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Фев. 14, 2022

Recent advances in thermally localized solar evaporation hold significant promise for vapor generation, seawater desalination, wastewater treatment, and medical sterilization. However, salt accumulation is one of the key bottlenecks reliable adoption. Here, we demonstrate highly efficient (>80% solar-to-vapor conversion efficiency) rejecting (20 weight % salinity) by engineering fluidic flow a wick-free confined water layer. With mechanistic modeling experimental characterization transport, show that natural convection can be triggered water. More notably, there exists regime enabling simultaneous thermal localization rejection, i.e., significantly accelerates rejection while inducing negligible additional heat loss. Furthermore, broad applicability integrating this layer with recently developed contactless evaporator report an improved efficiency. This work elucidates fundamentals transport offers low-cost strategy high-performance evaporation.

Язык: Английский

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

Nano-Micro Letters, Год журнала: 2021, Номер 14(1)

Опубликована: Дек. 4, 2021

Solar steam generation technology has emerged as a promising approach for seawater desalination, wastewater purification, etc. However, simultaneously achieving superior light absorption, thermal management, and salt harvesting in an evaporator remains challenging. Here, inspired by nature, 3D honeycomb-like fabric decorated with hydrophilic Ti3C2Tx (MXene) is innovatively designed successfully woven solar evaporator. The honeycomb structure periodically concave arrays creates the maximum level of light-trapping multiple scattering omnidirectional synergistically cooperating absorbance MXene. minimum loss available constructing localized photothermal generation, contributed thermal-insulating barrier connected 1D water path, efficiently recycling convective radiative heat loss. demonstrates high efficiency up to 93.5% evaporation rate 1.62 kg m−2 h−1 under one sun irradiation. Moreover, assisted path center, solution transporting generates radial concentration gradient from center edge so that crystallized at even 21% brine, enabling complete separation water/solute efficient harvesting. This research provides large-scale manufacturing route high-performance generator.

Язык: Английский

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3D-printed hierarchical porous cellulose/alginate/carbon black hydrogel for high-efficiency solar steam generation

Chemical Engineering Journal, Год журнала: 2021, Номер 430, С. 132765 - 132765

Опубликована: Окт. 2, 2021

Язык: Английский

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Janus-interface engineering boosting solar steam towards high-efficiency water collection

Energy & Environmental Science, Год журнала: 2021, Номер 14(10), С. 5330 - 5338

Опубликована: Янв. 1, 2021

A Janus-interface solar-steam generator is developed for high-efficiency water collection, which circumvents the strong mutual interference between incident light and escaped vapor.

Язык: Английский

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Salt-Rejecting Solar Interfacial Evaporation

Cell Reports Physical Science, Год журнала: 2021, Номер 2(1), С. 100310 - 100310

Опубликована: Янв. 1, 2021

Solar evaporation offers a promising approach to drive the distillation process, and nanotechnology may help overcome operational issues such as salt fouling. Here, we discuss opportunities presented by salt-rejecting solar enhance sustainability of desalination. Within this framework, phase diagrams crystallization physics are first revisited understand transitions water well formation growth crystals. We then examine salting-out salt-free evaporating systems toward better The techniques be covered include subsequent flushing, self-cleaning, local crystallization, gravity-assisted cleaning, anti-clogging layer, Janus membranes, concentrating diffusion, gap separation. principles these fully addressed, performance requirements elaborated together with advantages but also limitations. Finally, remaining challenges future research for further development technology highlighted.

Язык: Английский

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