Three-dimensional open architecture enabling salt-rejection solar evaporators with boosted water production efficiency DOI Creative Commons
Kaijie Yang, Tingting Pan,

Saichao Dang

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Nov. 4, 2022

Abstract Direct solar desalination exhibits considerable potential for alleviating the global freshwater crisis. However, prevention of salt accumulation while maintaining high water production remains an important challenge that limits its practical applications because methods currently employed achieving rapid backflow usually result in heat loss. Herein, we fabricate a evaporator featuring vertically aligned mass transfer bridges transport and backflow. The 3D open architecture constructed using enables to efficiently utilize conductive would otherwise be lost, significantly improving evaporation efficiency without compromising on rejection. fabricated can treat with more than 10% salinity. Moreover, it continuously steadily work real environment under natural sunlight solar-to-water collection >40%. Using discharged from reverse osmosis plants sea Red Sea, demonstrates daily generation rate ~5 L/m 2 , which is sufficient satisfy individual drinking requirements. With strong rejection, energy efficiency, simple scalability, has promise supply water-stressed off-grid communities.

Language: Английский

Structure Architecting for Salt‐Rejecting Solar Interfacial Desalination to Achieve High‐Performance Evaporation With In Situ Energy Generation DOI Creative Commons
Yaoxin Zhang,

Ting Xiong,

Dilip Krishna Nandakumar

et al.

Advanced Science, Journal Year: 2020, Volume and Issue: 7(9)

Published: March 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.

Language: Английский

Citations

346
Dual‐Zone Photothermal Evaporator for Antisalt Accumulation and Highly Efficient Solar Steam Generation DOI
Xuan Wu, Yida Wang, Pan Wu

et al.

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(34)

Published: June 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.

Language: Английский

Citations

313
Salt Mitigation Strategies of Solar‐Driven Interfacial Desalination DOI

Keyuan Xu,

Chengbing Wang, Zhengtong Li

et al.

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 31(8)

Published: Nov. 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.

Language: Английский

Citations

312
Carbon Materials for Solar Water Evaporation and Desalination DOI
Weixin Guan, Youhong Guo, Guihua Yu

et al.

Small, Journal Year: 2021, Volume and Issue: 17(48)

Published: June 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.

Language: Английский

Citations

282
Passive, high-efficiency thermally-localized solar desalination DOI Creative Commons
Lenan Zhang, Zhenyuan Xu,

Lin Zhao

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1771 - 1793

Published: Jan. 1, 2021

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

Language: Английский

Citations

242
Highly efficient and salt rejecting solar evaporation via a wick-free confined water layer DOI Creative Commons
Lenan Zhang, Xiangyu Li, Yang Zhong

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Feb. 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.

Language: Английский

Citations

218
Nature Inspired MXene-Decorated 3D Honeycomb-Fabric Architectures Toward Efficient Water Desalination and Salt Harvesting DOI Creative Commons
Zhiwei Lei, Xuantong Sun, Shifeng Zhu

et al.

Nano-Micro Letters, Journal Year: 2021, Volume and Issue: 14(1)

Published: Dec. 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.

Language: Английский

Citations

214
3D-printed hierarchical porous cellulose/alginate/carbon black hydrogel for high-efficiency solar steam generation DOI
Jun Yuan, Lei Xiao, Chenqi Yi

et al.

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 430, P. 132765 - 132765

Published: Oct. 2, 2021

Language: Английский

Citations

210
Janus-interface engineering boosting solar steam towards high-efficiency water collection DOI
Houze Yao, Panpan Zhang, Ce Yang

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(10), P. 5330 - 5338

Published: Jan. 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.

Language: Английский

Citations

199
Salt-Rejecting Solar Interfacial Evaporation DOI Creative Commons
Guohua Liu, Ting Chen, Jinliang Xu

et al.

Cell Reports Physical Science, Journal Year: 2021, Volume and Issue: 2(1), P. 100310 - 100310

Published: Jan. 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.

Language: Английский

Citations

194