Sustainable solar-powered seawater desalination enabled by phosphorene-decorated watermelon-like phase-change microcapsules

Desalination, Journal Year: 2024, Volume and Issue: 594, P. 118283 - 118283

Published: Nov. 6, 2024

Language: Английский

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Preparation of Calcium Alginate-Based Hydrogels with Precisely Designed Centrosymmetric Geometries for Efficient Water Evaporation in Response to Different Solar Incidence Angles

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Hydrogels are popular materials for desalination and can significantly reduce the vaporization enthalpy of water; however, there few reports on hydrogels with a controllable multilevel structural design water evaporation. Herein, calcium alginate traditional Chinese ink-based evaporator (CIE) proposed fabricated using directed freezing technology to construct radial channels, followed by freeze-drying physical cross-linking. Because squeezing ice crystals shaping effect PDMS template, prepared exhibits sea-urchin-shaped highly geometrical centrosymmetric structure numerous pore which promotes rapid transport under different solar incidence angles as sun rotates well overcomes shrinkage hydrogel caused insufficient supply. Additionally, channels in spherical overcome limitation saltwater being continuously concentrated same area where evaporation rate is highest. As result, urchin-structured CIE 3.52 kg m–2 h–1 at 1 irradiation, 45.5% higher than that unpatterned CIE. This provides strategy fabrication an all-day hydrogel-based without irradiation.

Language: Английский

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Compressible and dehydratable all-wood hydrospongel from low-value wood for sustainable water harvesting

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162458 - 162458

Published: April 1, 2025

Language: Английский

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Tri-dimensional porous cattails carbon fiber/MoS2 composite aerogel for desalination and oil–water emulsion purification

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 133113 - 133113

Published: April 1, 2025

Language: Английский

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2D Nb₂C MXene-enhanced hierarchical hydrogel for efficient solar-driven water evaporation

RSC Advances, Journal Year: 2025, Volume and Issue: 15(21), P. 16257 - 16265

Published: Jan. 1, 2025

Solar-driven interfacial evaporation has emerged as a sustainable solution to address global freshwater scarcity by converting solar energy into thermal for efficient water purification. To achieve rapid and energy-efficient steam generation, the development of advanced photothermal materials with optimized light absorption activation remains critical. Here, we present three-dimensional polyvinyl alcohol/chitosan/Nb2C MXene (PCN) hydrogel engineered high-performance evaporation. The composite integrates Nb2C nanosheets hydrophilic polymer matrix through hydrogen bonding electrostatic interactions, forming interconnected microchannels that enable broadband (93% across 300-2500 nm) via MXene's plasmonic effects light-trapping architecture. synergistic combination transport weakened within hydrated network significantly reduces enthalpy 1426 J g-1. This design achieves an exceptional rate 2.72 kg m-2 h-1 solar-to-vapor conversion efficiency 93.2% under 1 sun irradiation, surpassing conventional polymer-based systems. hydrogel's hierarchical porous structure facilitates effective localization sustains stable varying intensities (1-5 sun), demonstrating adaptability scalable applications. work provides rational strategy MXene-enhanced hydrogels practical desalination wastewater purification technologies.

Language: Английский

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Solar-driven hydrogel-based interfacial evaporators: From principles to material manipulations

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 124639 - 124639

Published: Oct. 1, 2024

Language: Английский

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