A Molecularly Engineered Zwitterionic Hydrogel with Strengthened Anti‐Polyelectrolyte Effect: from High‐Rate Solar Desalination to Efficient Electricity Generation

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: June 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.

Language: Английский

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Low vaporization enthalpy hydrogels for highly efficient solar-driven interfacial evaporation

Desalination, Journal Year: 2023, Volume and Issue: 568, P. 116999 - 116999

Published: Sept. 28, 2023

Language: Английский

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Micro–Nano Water Film Enabled High-Performance Interfacial Solar Evaporation

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Sept. 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.

Language: Английский

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Tough, stretchable dual-network liquid metal-based hydrogel toward high-performance intelligent on-off electromagnetic interference shielding, human motion detection and self-powered application

Nano Energy, Journal Year: 2023, Volume and Issue: 114, P. 108678 - 108678

Published: July 8, 2023

Language: Английский

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Hydrogels as promising platforms for solar-driven water evaporators

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147519 - 147519

Published: Nov. 19, 2023

Language: Английский

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Fully Polymeric Conductive Hydrogels with Low Hysteresis and High Toughness as Multi‐Responsive and Self‐Powered Wearable Sensors

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: April 22, 2024

Abstract High mechanical strength, excellent toughness, low hysteresis, and robust resilience are of great importance for stretchable conductive hydrogels (CHs) to heighten their reliabilities self‐powered sensing applications. However, it still remains challenging simultaneously obtain the mutually exclusive performances. Herein, an intrinsically adhesive hydrogel is fabricated by one‐step radical polymerization acrylamide (AAm), three hydroxy groups together clustered‐N‐[tris(hydroxymethyl)methyl]acrylamide (THMA), cationic 1‐Butyl‐3‐Vinylimidazolium Bromide (ILs) dissolved in core‐shell structurally dispersed PEDOT:PSS (PP) solution. Owing abundant clustered hydrogen bonds, electrostatic interactions between PILs chains anionic PSS shells, polymer chain entanglements, CHs feature superior properties with a high tensile strength (0.25 MPa), fracture strain (1015%), toughness (1.22 MJ m ‐3 ), energy 36.5 kJ ‐2 extremely hysteresis (5%), display fatigue resistance. As result, indicate gauge factor up 10.46, broad range (1‐900%) pressure (0.05‐100 kPa), fast responsive rate, thus qualifying monitoring reliably accurately large tiny human movements daily life. Moreover, hydrogel‐assembled triboelectric nanogenerators (TENGs) exhibit stable electrical output performances, which greatly promising flexible wearable electronics.

Language: Английский

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Boosting the Viable Water Harvesting in Solar Vapor Generation: From Interfacial Engineering to Devices Design

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(5)

Published: Sept. 5, 2023

Abstract Continuously increasing demand for the life‐critical water resource induces severe global shortages. It is imperative to advance effective, economic, and environmentally sustainable strategies augment clean supply. The present work reviews recent reports on interfacial engineering devices design of solar vapor generation (SVG) system boosting viability drinkable harvesting. Particular emphasis placed basic principles associated with evaporators capable efficient solar‐to‐thermal conversion resulting freshwater via eliminating pollutants from quality‐impaired sources. critical configurations manufacturing fast condensation then highlighted harvest potable liquid water. Fundamental practical challenges, along prospects targeted materials architecture modifications SVG are also outlined, aiming provide future directions inspiring research efforts in this emerging exciting field.

Language: Английский

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Lignocellulose‐Mediated Functionalization of Liquid Metals toward the Frontiers of Multifunctional Materials

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 21, 2024

Lignocellulose-mediated liquid metal (LM) composites, as emerging functional materials, show tremendous potential for a variety of applications. The abundant hydroxyl, carboxyl, and other polar groups in lignocellulose facilitate the formation strong chemical bonds with LM surfaces, enhancing wettability adhesion improved interface compatibility. Beyond serving supportive matrix, can be tailored to optimize microstructure adapting them diverse This review comprehensively summarizes fundamental principles recent advancements lignocellulose-mediated highlighting advantages composite fabrication, including facile synthesis, versatile interactions, inherent functionalities. Key modulation strategies LMs innovative synthesis methods functionalized composites are discussed. Furthermore, roles structure-performance relationships these electromagnetic shielding, flexible sensors, energy storage devices systematically summarized. Finally, obstacles prospective pertaining thoroughly scrutinized deliberated upon. is expected provide basic guidance researchers boost popularity applications useful references design state-of-the-art LMs.

Language: Английский

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3D-Printed Liquid Metal-in-Hydrogel Solar Evaporator: Merging Spectrum-Manipulated Micro-Nano Architecture and Surface Engineering for Solar Desalination

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 8, 2024

Solar desalination driven by interfacial heating is considered a promising technique to alleviate the freshwater shortage crisis. However, its further extension and application are confined factors such as highlighted salt accumulation, inferior energy efficiency, poor durability. Herein, microsized eutectic gallium–indium (EGaIn) core–shell nanodroplet (denoted LMTE) with photo-cross-linking photothermal traits, stabilized allyl glycidyl ether (AGE)-grafting tannic acid (TA), explored solar absorber for broadband light absorbing localized micro-nano heat channeling. The LMTE nanodroplets formulated directly highly hydrated polymers photosensitive species successfully develop water-based ink suitable digital processing (DLP) 3D printing. As demonstration, composite hydrogel-forged milli-conical needle arrays metal-phenolic network (MPN)-engineered wettability enhancement can be printed designed rationally via bottom-up strategy. 3D-printing hydrogel evaporator composed of spectrum-tailored EGaIn efficient photon harvesting MPN-coated milli-cone water supplying channeling, which function cooperatively bestow superior solar-powered evaporation (2.96 kg m–2 h–1, 96.93% efficiency) excellent (salt cycle site-specific crystallization). Furthermore, robust steam generating/collecting system demonstrated, providing valuable guidance building water-energy-agriculture nexus.

Language: Английский

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Liquid Metal Nanoparticles Physically Hybridized with Cellulose Nanocrystals Initiate and Toughen Hydrogels with Piezoionic Properties

ACS Nano, Journal Year: 2024, Volume and Issue: 18(11), P. 8038 - 8050

Published: March 4, 2024

Liquid metal (LM) particles can serve as initiators, functional fillers, and cross-linkers for hydrogels. Herein, we show that cellulose nanocrystals (CNCs) stabilize LM in aqueous solutions, such those used to produce The CNC-coated initiate free-radical polymerization form poly(acrylic acid) (PAA) hydrogel with exceptional properties─stretchability ∼2000%, excellent toughness ∼1.8 MJ/m3, mechanical resilience, efficient self-healing─relative cross-linked PAA networks polymerized using conventional molecular initiators. FTIR spectroscopy, rheology, measurements suggest physical bonds between both Ga3+ LM-CNC contribute the properties. gels are sense a wide range of strains, associated human motion, via changes resistance through gel. sensitivity at low strains enables monitoring subtle physiological signals, pulse. Without significantly compromising toughness, soaking salt solution brings about high ionic conductivity (3.8 S/m), enabling them detect touch piezoionic principles; anions gel have higher mobility than cations, resulting significant charge separation (current ∼30 μA, ∼10 μA/cm2) response touch. These attractive properties promising wearable sensors, energy harvesters, self-powered panels.

Language: Английский

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