Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 206, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2019.110347
Keywords
Solar steam generation; Polypyrrole sponge; Hydrophilic; Salt-resistant
Funding
- National Natural Science Foundation of China [21975113, 51962018, 51663012]
- Project of Collaborative Innovation Team, Gansu Province, China [052005]
- Innovation and Entrepreneurship Talent Project of Lanzhou [2017-RC -33]
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Solar steam generation is a kind of highly promising technology for harvesting solar energy and the production of fresh water. Here, we report the fabrication of a novel Ca2+ crosslinked sodium alginate modified monolithic polypyrrole 3-D conductively porous architecture (M-PPy sponge) with unique micron-sized channels as functional solar steam generator. The as-synthesized M-PPy sponge shows excellent thermal insulation (a low thermal conductivity of 0.0995 W m(-1) k(-1)), superhydrophilicity, nearly 100% light absorption and better mechanical properties. Under a solar light power of 1 kW m(-2), a higher evaporation efficiency of 84.72% was achieved, which is comparable to the best performance for polymer systems that have been reported so far. More significantly, the modified monolithic polypyrrole shows the excellent salt-resistant performance in high saline solution with the greater evaporation efficiency of 84.43% and recyclability, making it promising candidate for a variety of applications, including power generation, desalination and so on.
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