Anisotropic MXene/Poly(vinyl alcohol) Composite Hydrogels with Vertically Oriented Channels and Modulated Surface Topography for Efficient Solar-Driven Water Evaporation and Purification DOI

Chen Hu,

Ji Liu, Changjun Li

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(10), С. 13060 - 13070

Опубликована: Март 4, 2024

Hierarchical structure and surface topography play pivotal roles in developing high-performance solar-driven evaporators for clean water production; however, there exists a notable gap research addressing simultaneous modulation of internal microstructure hydrogels to enhance both solar steam generation performance desalination efficiency. Herein, anisotropic poly(vinyl alcohol)/MXene composite efficient evaporation wastewater purification are fabricated using template-assisted directional freezing approach followed by precise wettability modulation. The resultant exhibit vertically oriented channels that ensure fast supply during evaporation, their alcohol) skeletons can reduce the vaporization enthalpy hydrogels. incorporation MXene sheets enables light absorption solar-thermal conversion while providing structural reinforcement More importantly, as-created undulating surface, featuring modulated hydrophilic troughs hydrophobic crests, significantly enhances solar–thermal efficiency, thereby boosting performances. As result, hydrogel-based evaporator exhibits an impressive rate 2.55 kg m–2 h–1 under 1 sun irradiation, coupled with long-term durability stability. Notably, outstanding mechanical robustness hydrogel further high portability through readily achievable process reversible dehydration/hydration.

Язык: Английский

Bioinspired Self‐Standing, Self‐Floating 3D Solar Evaporators Breaking the Trade‐Off between Salt Cycle and Heat Localization for Continuous Seawater Desalination DOI
Huawen Liu,

Bichi Chen,

Yilin Chen

и другие.

Advanced Materials, Год журнала: 2023, Номер 35(24)

Опубликована: Апрель 10, 2023

Facing the global water shortage challenge, solar-driven desalination is considered a sustainable technology to obtain freshwater from seawater. However, trade-off between salt cycle and heat localization of existing solar evaporators (SE) hinders its further practical applications. Here, inspired by hyacinth, self-standing self-floating 3D SE with adiabatic foam particles aligned channels built through continuous directional freeze-casting technique. With help insulation effect efficient transport channels, this new can cut off transfer top photothermal area bulk without affecting supply, breaking long-standing traditional SEs. Additionally, features reduce human maintenance. Its large exposure height increase evaporation collect environmental energy, limitation solar-to-vapor efficiency conventional novel structure employed, an flux 2.25 kg m-2 h-1 , apparent 136.7% are achieved under 1 sun illumination. This work demonstrates evaporator structure, also provides key insight into structural design next-generation salt-tolerant high-efficiency

Язык: Английский

Процитировано

123
Designing high-efficiency light-to-thermal conversion materials for solar desalination and photothermal catalysis DOI

Hanjin Jiang,

Xinghang Liu,

Dewen Wang

и другие.

Journal of Energy Chemistry, Год журнала: 2023, Номер 79, С. 581 - 600

Опубликована: Янв. 23, 2023

Язык: Английский

Процитировано

105
Solar-driven interfacial evaporation: Design and application progress of structural evaporators and functional distillers DOI
Jiulong Wang, Yan Kong, Zhe Liu

и другие.

Nano Energy, Год журнала: 2022, Номер 108, С. 108115 - 108115

Опубликована: Дек. 21, 2022

Язык: Английский

Процитировано

103
A Molecularly Engineered Zwitterionic Hydrogel with Strengthened Anti‐Polyelectrolyte Effect: from High‐Rate Solar Desalination to Efficient Electricity Generation DOI
Si Yu Zheng, Jiahui Zhou, Mengjie Si

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(43)

Опубликована: Июнь 21, 2023

Abstract Polyzwitterionic hydrogel is an emerging material for solar‐driven water evaporation in saline environment due to its special anti‐polyelectrolyte effect, which a promising approach co‐generation of freshwater and electricity. However, the molecular impact on effect remains unclear, let alone optimize zwitterionic structure promote efficiency high‐salinity brine. Herein, molecularly engineered developed incorporated phenyl‐methylene‐imidazole motif greatly enhances salt binding ability strengthens leading boosted hydration, improved tolerance, ultra‐low enthalpy (almost half traditional gel), durable anti‐microbial Besides, gradient solar‐thermal network penetrated transport channel heat confinement. The gel exhibits excellent rate 3.17 kg m −2 h −1 seawater, 1.6 times that such high could be maintained during 8 continuous desalination, demonstrating outstanding tolerance. flux ion stream can generate considerable voltage (321.3 mV) simultaneously. This work will bring new insights understanding at level materials design evaporation.

Язык: Английский

Процитировано

88
Phase‐Separated Polyzwitterionic Hydrogels with Tunable Sponge‐Like Structures for Stable Solar Steam Generation DOI

Bolun Peng,

Quanqian Lyu,

Miaomiao Li

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(18)

Опубликована: Фев. 1, 2023

Abstract Solar steam generation (SSG) through hydrogel‐based evaporators has shown great promise for freshwater production. However, developing with stable SSG performance in high‐salinity brines remains challenging. Herein, phase‐separated polyzwitterionic are presented sponge‐like structures comprising interconnected pores performance, which fabricated by photopolymerization of sulfobetaine methacrylate (SBMA) water‐dimethyl sulfoxide (DMSO) mixed solvents. It is that driven competitive adsorption, the resulting poly(sulfobetaine methacrylate) (PSBMA) hydrogels can be readily tuned volume ratio DMSO to achieve phase separation. The optimized PSBMA hydrogels, combining unique anti‐polyelectrolyte effects demonstrate a rapid water transport capability brines. After introducing photothermal polypyrrole particles on surface hydrogel evaporators, evaporation rate ≈2.024 kg m −2 h −1 and high solar‐to‐vapor efficiency ≈97.5% 3.5 wt.% brine obtained under simulated solar light irradiation (1.0 kW ). Surprisingly, rates remain even high‐intensity (2.0 anticipated porous will contribute technology seawater applications.

Язык: Английский

Процитировано

87
Low vaporization enthalpy hydrogels for highly efficient solar-driven interfacial evaporation DOI
Qi Zhao, Yawei Yang,

Benxin Zhu

и другие.

Desalination, Год журнала: 2023, Номер 568, С. 116999 - 116999

Опубликована: Сен. 28, 2023

Язык: Английский

Процитировано

83
Micro–Nano Water Film Enabled High-Performance Interfacial Solar Evaporation DOI Creative Commons
Zhen Yu,

Yuqing Su,

Ruonan Gu

и другие.

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Сен. 22, 2023

Interfacial solar evaporation holds great promise to address the freshwater shortage. However, most interfacial evaporators are always filled with water throughout process, thus bringing unavoidable heat loss. Herein, we propose a novel structure based on micro-nano film, which demonstrates significantly improved performance, as experimentally verified by polypyrrole- and polydopamine-coated polydimethylsiloxane sponge. The 2D evaporator as-prepared sponge realizes an enhanced rate of 2.18 kg m-2 h-1 under 1 sun fine-tuning film. Then, homemade device condensation function is engineered for outdoor clean production. Throughout continuous test 40 days, this high production (WPR) 15.9-19.4 kW-1 m-2. Based outcomes, further establish multi-objective model assess global WPR. It predicted that m2 can produce at 7.8 per day, could meet daily drinking needs 3 people. Finally, technology greatly alleviate current energy crisis through large-scale applications.

Язык: Английский

Процитировано

80
A Diode‐like Scalable Asymmetric Solar Evaporator with Ultra‐high Salt Resistance DOI
Yawei Yang,

Haixiang Feng,

Wenxiu Que

и другие.

Advanced Functional Materials, Год журнала: 2022, Номер 33(6)

Опубликована: Ноя. 29, 2022

Abstract Passive solar‐driven interfacial evaporation is an environmental‐friendly approach for seawater desalination. However, non‐volatile salts usually precipitate on the evaporator surface during evaporation, significantly reducing rate and blocking evaporator. Although several strategies have been proposed this issue, they are only effective under low salinity conditions natural solar irradiation. In study, a scalable proposed, which expediently fabricated by carbonizing commercially available coconut fiber cloth, through designing optimizing asymmetric bi‐layer structure with trapezoidal wide leg‐strengthened water supply pathway. Both experimental simulation results indicate that presents ultra‐high salt tolerance, keeps running steadily consecutive 14 days high of wt% NaCl irradiation 4 suns. This excellent resistance arises from diode‐like ion migration introduced its structure. Meanwhile, remarkable 7.28 kg m −2 h −1 also achieved harsh condition, resulting absorbance reduced enthalpy Such confirmed as simple, low‐cost, scalable, efficient, long‐term stable device producing freshwater desalination conditions.

Язык: Английский

Процитировано

79
Gradient Graphene Spiral Sponges for Efficient Solar Evaporation and Zero Liquid Discharge Desalination with Directional Salt Crystallization DOI Creative Commons
Demin Zhao, Meichun Ding,

Tianhao Lin

и другие.

Advanced Science, Год журнала: 2024, Номер 11(22)

Опубликована: Март 15, 2024

Abstract Solar desalination is a promising strategy to utilize solar energy purify saline water. However, the accumulation of salt on evaporator surface severely reduces light absorption and evaporation performance. Herein, simple eco‐friendly method fabricate 3D gradient graphene spiral sponge (GGS sponge) presented that enables high‐rate zero liquid discharge (ZLD) high‐salinity brine. The structure GGS enhances recovery, while network structures facilitate radial brine transport directional crystallization, which cooperate endow with superior (6.5 kg m −2 h −1 for 20 wt.% brine), efficient collection (1.5 ZLD desalination, long‐term durability (continuous 144 in brine). Moreover, shows an ultrahigh freshwater production rate 3.1 during outdoor tests. A continuous desalination–irrigation system based crop growth, has potential self‐sustainable agriculture remote areas demonstrated. This work introduces novel design also provides insight into structural principles designing next‐generation devices are salt‐tolerant highly efficient.

Язык: Английский

Процитировано

66
Self‐Assembled Nanofibrous Hydrogels with Tunable Porous Network for Highly Efficient Solar Desalination in Strong Brine DOI Creative Commons
Hao Li,

Weixin Zhang,

Jiawei Liu

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(47)

Опубликована: Сен. 1, 2023

Abstract Hydrogel‐based solar evaporators (HSEs) emerged as energy‐efficient designs for water purification due to the reduced vaporization enthalpy in hydrated polymeric network. However, it remains challenging HSEs achieve stable performance desalination, partly tradeoff between desired evaporation dynamics and salt tolerance. Here, composite hydrogels with tunable self‐assembled nanofiber networks are exploited engineering of both high resistance accumulation. The nanofibrous hydrogel (NHSEs) present an intrinsic open network porosity, above 90%, enabling continuous channels efficient mass transfer. Theoretical modeling captures complex nexus microstructures by coupling transfer, thermal conduction, during evaporation. mechanistic understanding tuning composites lead optimum configuration NHSEs, which demonstrate a rate 2.85 kg m −2 h −1 desalination 20% brine. outstanding NHSEs underlying design principles may facilitate further development practical systems.

Язык: Английский

Процитировано

64