Porous and Salt-Tolerant Polyelectrolyte Hydrogels for Excellent Solar Evaporation

Industrial & Engineering Chemistry Research, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Hydrogels with a low evaporation enthalpy and high water-molecule activation capability are regarded as promising substrate materials for solar-driven interfacial evaporation. However, the uncontrollable porous channels cross-linking degree of traditional hydrogels limit water mass transportation, light absorption sites, salt reflux therefore result in efficiency, poor tolerance, terrible operational stability. Herein, we report poly(vinyl alcohol)/carbon nanotubes-co-poly(acrylic acid)-co-poly dimethyl diallyl ammonium chloride (PVA/CNTs-co-PAA-co-PDADMAC) (PADM) polyelectrolyte via chemical polymerizing strategy. The as-prepared possess interconnected (abundant porosity 76.24%, total pore area 0.99 m2 g–1, large average diameter 18.79 μm) controllable (good mechanical property), which can greatly promote transportation (0.395 g min–1), reflux. As result, PADM maintain rate 3.58 kg m–2 h–1, excellent tolerance (evaporation 3.18 h–1 under 20 wt % high-concentration brine), superior stability (invariable after 8 days continuous evaporation), exhibits great advantage

Язык: Английский

---

3D‐Printed Hemispherical Capillaries for Solar Water Evaporation

Solar RRL, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Solar interfacial evaporation offers a sustainable method to extract fresh water from seawater, but is often constrained by salt accumulation. A 3D‐printed hemispherical solar evaporator with integrated open capillary grooves on its surface introduced enhance transport and evaporation. This design creates vertically nonuniform liquid film, initiating Marangoni flow facilitate continuous desalination. The achieves high rates of 2.768 kg m −2 h −1 for pure 2.646 25 wt% saline upon one‐sun irradiation. performance attributed the microporous structure capillaries, which supports cluster‐based benefits lower enthalpy seawater. After 15 operation, promotes localized crystallization at low concentrations forms thin film higher concentrations, surprisingly increasing rate. Moreover, effectively removes pollutants, including heavy metals organic contaminants wastewater new could significantly impact treatment, desalination, other evaporative applications.

Язык: Английский

---

Bioinspired porous spindle-knotted sponge evaporator prepared with a chemically reactive ink coating for efficient solar desalination

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131781 - 131781

Опубликована: Янв. 1, 2025

Язык: Английский

---

Phenomenon of white superevaporation of water and its application for enhancing energy efficiency in dark/solar water purification, power generation, and generative AI

Desalination, Год журнала: 2025, Номер unknown, С. 118695 - 118695

Опубликована: Фев. 1, 2025

Язык: Английский

---

Photocuring technology strengthens thermal localization of interfacial solar-driven evaporator

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161235 - 161235

Опубликована: Март 1, 2025

Язык: Английский

---