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

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 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.

Language: Английский

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Bioinspired, Sustainable, High‐Efficiency Solar Evaporators for Sewage Purification

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(47)

Published: Sept. 3, 2023

Abstract To alleviate the severe water crisis, an interfacial solar evaporator provides a promising method to produce freshwater. Although many superior evaporators present high evaporation rates by reducing enthalpy, adapting sustainable materials construct high‐efficiency remains challenging. Herein, inspired corncob pith's structure and functional groups, interconnected porous cellulose hydrogel is proposed crosslinking hydroxypropyl cellulose. Benefiting from abundant hydroxy group, pith/carbon nanotubes (CNTs) hydrogel/CNTs show low enthalpy of 880.5 ± 42.1 1280.7 57.8 J g −1 due reduced hydrogen bond numbers between molecules enable 3.06 2.56 kg m −2 h , respectively. Moreover, purification performance for seawater sewage, excellent anti‐biological fouling properties under light irradiation. It anticipated that bionic strategy would provide in‐depth understanding designing next‐generation in framework dual‐carbon concept.

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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A typha orientalis-inspired 3D Janus solar evaporator with controllable wettability for highly efficient and stable solar desalination

Desalination, Journal Year: 2024, Volume and Issue: unknown, P. 118318 - 118318

Published: Nov. 1, 2024

Language: Английский

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A stable and efficient hydrogel/sponge solar evaporator with splendid water supply

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: 241, P. 122332 - 122332

Published: Jan. 4, 2024

Language: Английский

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Ultra-high solar steam generation based on regulated water management strategy in 3D biomass hydrogels inspired by the “binding effect” of cell walls

Desalination, Journal Year: 2024, Volume and Issue: 587, P. 117954 - 117954

Published: July 26, 2024

Language: Английский

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Hydrogel-based 3D evaporator with cross-linked fixation by carbon dots for ultra-high and stable solar steam generation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154793 - 154793

Published: Aug. 12, 2024

Language: Английский

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Current Developments in Chitosan‐Based Hydrogels for Water and Wastewater Treatment: A Comprehensive Review

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(6)

Published: Feb. 1, 2025

Abstract The global shortage of fresh water is a critical issue, especially in regions with limited rainfall. Developing reliable and wastewater treatment technologies urgent. Among the available methods, adsorption stands out as highly effective, straightforward, cost‐efficient approach. It avoids use additional chemicals reduces risk contaminating source undesirable by‐products. Chitosan (CS)‐based hydrogels have gained attention for their excellent capacities pollutants water. These materials are also known bioavailability, biocompatibility, biodegradability, cost‐effectiveness, environmental friendliness, making them promising candidates treatment. This comprehensive review explores recent advancements CS‐based various applications, including pollutant removal, oil‐water separation, seawater desalination, atmospheric condensation. highlights benefits this material treatment, providing broader understanding potential research community. focuses on synthesis modification techniques these hydrogels, such cross‐linking, grafting, ion imprinting, which significantly enhance performance mechanical stability. Additionally, challenges faced by practical applications discussed, along solutions. paper concludes forecasting future directions field, offering valuable insights researchers. Overall, provides overview current state art into effective utilization emphasizing to address pollution challenges.

Language: Английский

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Marine‐Derived Hydrogels for Biomedical Applications

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(6)

Published: Nov. 28, 2022

Marine organisms provide novel and broad sources for the preparations applications of biomaterials. Since urgent requirement bio‐hydrogels to mimic tissue extracellular matrix (ECM), natural biomacromolecule hydrogels derived from marine have received increasing attention. Benefiting their outstanding bioactivity biocompatibility, many attempts been made reconstruct ECM components by applying marine‐derived hydrogels. Moreover, successfully applied in biomedicine means microfluidics, electrospray, bioprinting. In this review, classification characteristics are summarized. particular, role development biomaterials is also introduced. Then, recent advances bio‐fabrication strategies various hydrogel materials focused upon. Besides, influences types on functions biomedical discussed depth. Finally, critical reflections limitations future presented.

Language: Английский

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Ultra-robust, high-adhesive, self-healing, and photothermal zwitterionic hydrogels for multi-sensory applications and solar-driven evaporation

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(9), P. 3807 - 3820

Published: Jan. 1, 2023

Zwitterionic hydrogels have received considerable attention owing to their characteristic structures and integrating multifunctionality. However, the superhydrophilicity-induced poor mechanical properties severely hinder potential applications. Besides, from perspective of wide applications, zwitterionic with integrated high properties, conductivity multifunctionalities including self-adhesive, self-healing, photothermal are highly desirable yet challenging. Herein, a new class high-performance multifunctional designed based on incorporation polydopamine-coated liquid metal nanoparticles (LM@PDA). Due efficient energy dissipation endowed by isotropically extensible deformation LM@PDA multiple interactions within hydrogel matrix, resultant exhibited ultrahigh robustness tensile strength up 1.3 MPa, strain 1555% toughness 7.3 MJ m-3, superior or comparable those most hydrogels. The introduced also endows conductivity, versatile adhesion, autonomous excellent injectability, three-dimensional printability, degradability, conversion performance. These preferable enable promising as wearable sensors sensory capabilities for range values (1-500%), pressures (0.5-200 kPa) temperatures (20-80 °C) an impressive temperature coefficient resistance (up 0.15 °C-1). Moreover, these can be applied solar evaporators water evaporation rate 2.42 kg m-2 h-1) solar-thermal efficiency 90.3%) desalination wastewater purification. present work pave way future development beyond.

Language: Английский

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