Article Dans Une Revue Desalination Année : 2023

3D aerogel membrane-based evaporator with sandwich structure for superior solar-driven evaporation

Yundi Lv
  • Fonction : Auteur
Beibei Wang
Jinbo Bai

Résumé

Seawater desalination with solar-driven interfacial evaporators has emerged as a promising solution to alleviate global water scarcity. However, conventional twodimensional (2D) planar evaporators have high reflectivity, which poses a challenge in achieving efficient light absorption. Herein, a sandwich-structured solar-driven interfacial evaporator (SSIE) assembled with three-dimensional (3D) cellulose aerogel membranes (modified with TiN nanoparticles) and an air-laid paper was proposed, which is significantly different from the previously reported 2D membrane-based evaporators. Cellulose aerogel membranes have excellent integrated properties, including extremely high flexibility, allowing for multiple folds, and a 3D porous structure that enables multiple light absorptions. Benefiting from special structural design, SSIE achieves an outstanding evaporation rate of 2.20 kg m -2 h -1 and an energy efficiency of 83.30%. Moreover, SSIE maintains a stable evaporation rate throughout a 10 h saltwater evaporation process. It also demonstrates excellent performance in seawater and simulated wastewater purification. Furthermore, SSIE exhibits a significant purification effect for dye wastewater, such as Rhodamine B (RhB). This study provides valuable insights into rational structural design for solar evaporators, as well as holding tremendous potential for carrying out seawater desalination in limited spaces.

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Dates et versions

hal-05351331 , version 1 (06-11-2025)

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Xi Hu, Yutong Song, Yundi Lv, Beibei Wang, Jinbo Bai, et al.. 3D aerogel membrane-based evaporator with sandwich structure for superior solar-driven evaporation. Desalination, 2023, 573, pp.117141. ⟨10.1016/j.desal.2023.117141⟩. ⟨hal-05351331⟩
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