Journal
ACS APPLIED ENERGY MATERIALS
Volume 1, Issue 1, Pages 56-61Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.7b00135
Keywords
solar-to-heat conversion; interfacial solar heating; porous membrane; hydrophilicity; self-floating
Funding
- National Natural Science Foundation of China [U1432132, 61605222, 51202253, 21703255]
- Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology [2014FXZY001]
- Natural Science Foundation of Anhui Province [1708085MB35]
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The current challenge in solar thermal utilization is how to effectively convert full-spectrum sunlight into directly available thermal energy for applications at high conversion efficiency. Herein, we report a novel strategy for the construction of large-area porous CuS/polyethylene (PE) hybrid membrane as a superior interfacial plasmonic photothermal material for high-efficiency solar thermal conversion to produce steam generation off seawater. The single-layer CuS/PE membrane materials have effective full-spectra sunlight absorption, excellent solar-to-heat conversion ability, low thermal conductivity, good hydrophilicity, and open micro/nanoscopic porosity for capillarity and self-floating, etc. Impressively, a single piece of porous CuS/PE membrane under one sun illumination can exhibit a superior conversion efficiency of 63.9% from sunlight to heat of seawater evaporation. Meanwhile, the plasmonic photothermal CuS/PE membrane can be recycled at least 20 times. Therefore, with the demonstrated convenient fabrication process, low cost, and high evaporation efficiency, the single-layer porous CuS/PE membrane materials offer great promise to convert sunlight into thermal energy for practical applications of steam generation.
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