| Abstrakt: |
Interfacial solar steam generators based on carbonized biomasses have attracted immense interest due to their promising applications in seawater desalination. However, to promote large-scale applications, the water evaporation rate needs to be further improved meanwhile cheaper biomass should be explored. In this work, Enteromorpha, a marine pollutant, is carbonized to prepare carbon materials following the concept of turning waste into treasure, which is then coated on the wood strips to fabricate solar water evaporators. After optimizing the carbonization temperature, the surface temperature of carbonized Enteromorpha (CE) reaches ca. 78 °C under one sun irradiation. Benefiting from the strong light absorption, high photothermal conversion efficiency, and the interfacial thermal management, the CE-coated wood strip shows a high-water evaporation rate of 2.56 kgm−2 h−1 with a solar to steam efficiency of 92.6%. For seawater desalination, the evaporation rate under one sun irradiation keeps about 2.3 kgm−2 h−1 during long-term cycling test. Therefore, this work not only prepares an excellent and stable photothermal material but also develops a highly efficient solar-driven interfacial steam generation device for seawater desalination. [ABSTRACT FROM AUTHOR] |
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