Dual Cross-Linking Coal Tar-Derived Phenolic Resin Porous Carbon-Based Hydrogel Solar Evaporators for Efficient Wastewater Purification
Porous carbon-based hydrogel evaporators show extensive application potential in the field of solar-driven water evaporation due to their wide availability, excellent hydrophilicity, and abundant porous structure. However, the closed pore structure of the single-molecule cross-linked hydrogel and th...
| Publié dans: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 12 vom: 01. Apr., Seite 8192-8201 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Langmuir : the ACS journal of surfaces and colloids |
| Sujets: | Journal Article |
| Résumé: | Porous carbon-based hydrogel evaporators show extensive application potential in the field of solar-driven water evaporation due to their wide availability, excellent hydrophilicity, and abundant porous structure. However, the closed pore structure of the single-molecule cross-linked hydrogel and the high production cost of the nanoporous carbon materials not only affect the salt resistance of the carbon-based hydrogel but also restrict its large-scale application. Herein, we developed a uniform porous APRC-PVA/PEG hydrogel evaporator by integrating poly(vinyl alcohol) (PVA)/polyethylene glycol (PEG) dual-network hydrogels with broadband solar-absorbing, cost-effective porous carbon nanosheets (APRC) derived from coal tar-based phenolic resin. The rich pores and three-dimensional double-network structure of the evaporator ensured excellent water transport performance and a high light absorption rate (≈98%). Meanwhile, the low thermal conductivity of the evaporator (dry: 0.09 W m-1 K-1; wet: 0.29 W m-1 K-1) reduces thermal loss to the bulk water, enabling a water evaporation rate of 1.45 kg m-2 h-1 under 1 sun irradiation and a low enthalpy of evaporation of 1614.605 J g-1. The evaporator also shows good potential in the field of brine, industrial wastewater, and organic dye wastewater |
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| Description: | Date Revised 01.04.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/acs.langmuir.4c05279 |