Journal
SOLAR RRL
Volume 4, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202000126
Keywords
ink-spray method; light-to-heat conversion; MoS2; LaF3; PDMS; solar absorber; solar-driven vapor generation
Funding
- National Natural Science Foundation of China [61603086]
- Jilin City Science and Technology Innovation Development Plan [201750212, 201831789]
- Heilongjiang Province Science Foundation [JJ2019YX0684]
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Due to its promising potential applications in seawater desalination and purification, solar steam conversion has attracted tremendous attention recently. The light-to-heat conversion capacity of solar absorbers directly affects the rate at which freshwater is produced by the evaporation system. Herein, an efficient double-layer evaporator is developed using MoS2/LaF3/PDMS ink as an absorber that is printed onto a commercial PTFE membrane by the controlled ink-spray method. The LaF3 nanoparticles-decorated MoS2 nanoflowers nanocomposite exhibits enhanced adsorption of sunlight due to semiconductor/solid electrolyte interface synergetic effect-induced broadband absorption ability. Combining the advantages of local heating and rapid vapor emission, the water evaporation rate of the evaporator with spray ink in sunlight is 1.76 kg m(-2) h(-1) and the corresponding high light-to-heat conversion efficiency is 91%. Also, the membrane module has good operability, certain mechanical strength, and good long-term stability. The synergistic effect of a rare-earth solid electrolyte and semiconductor provides new ideas for the design and development of materials with high light-to-heat conversion efficiency and good thermal stability.
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