Photothermal-Photocatalytic CSGZFG Evaporator for Synergistic Salt Rejection and VOC Removal during Solar-Driven Water Distillation

Sunlight-driven interfacial photothermal evaporation has been considered as a promising strategy for addressing global water crisis. Herein, we fabricated a self-floating porous triple-layer (CSGZFG) evaporator using porous fibrous carbon derived from Saccharum spontaneum (CS) as a photothermal mate...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1999. - 39(2023), 13 vom: 04. Apr., Seite 4651-4661
1. Verfasser: Chaw Pattnayak, Bibek (VerfasserIn)
Weitere Verfasser: Mohapatra, Sasmita
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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245 1 0 |a Photothermal-Photocatalytic CSGZFG Evaporator for Synergistic Salt Rejection and VOC Removal during Solar-Driven Water Distillation 
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520 |a Sunlight-driven interfacial photothermal evaporation has been considered as a promising strategy for addressing global water crisis. Herein, we fabricated a self-floating porous triple-layer (CSGZFG) evaporator using porous fibrous carbon derived from Saccharum spontaneum (CS) as a photothermal material. The middle layer of the evaporator is composed of hydrophilic sodium alginate crosslinked by carboxymethyl cellulose and zinc ferrite (ZFG), whereas the top hydrophobic layer consists of fibrous (CS) integrated benzaldehyde-modified chitosan gel (CSG). Water is transported to the middle layer through the bottom elastic polyethylene foam using natural jute fiber. Such a strategically designed three-layered evaporator exhibits a broad-band light absorbance (96%), excellent hydrophobicity (120.5°), a high evaporation rate of 1.56 kg m-2 h-1, an energy efficiency of 86%, and outstanding salt mitigation ability under the simulated sunlight of intensity 1 sun. Adding ZnFe2O4 nanoparticle as a photocatalyst has been proved to be capable of restricting the evaporation of volatile organic contaminants (VOCs) like phenol, 4-nitrophenol, and nitrobenzene to ensure the purity of evaporated water. Such an innovatively designed evaporator offers a promising approach for the production of drinking water from wastewater and seawater 
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