Highly efficient solar steam evaporation via elastic polymer covalent organic frameworks monolith.

Nat Commun

Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, China.

Published: November 2024

AI Article Synopsis

  • Three-dimensional solar steam evaporators are gaining attention for their effective water purification capabilities.
  • Researchers developed a new type of evaporator using elastic polymer covalent organic frameworks (PP-PEG) with outstanding light absorption and heat conversion features.
  • The innovative design achieves high evaporation rates, making it a promising solution for desalination and water purification, while being easy to produce and durable.

Article Abstract

Three-dimensional solar steam evaporators with efficient water purification performance have received increasing attention recently. Herein, elastic polymer covalent organic frameworks (PP-PEG) containing PEG chains with intriguing adaptability to guests are prepared by forming porphyrin rings. PP-PEG foams demonstrate full spectrum absorbance and excellent photothermal conversion properties. Through well-designed thermal management and optimization of the hydrophilicity and PEG chain length, we obtain a highly efficient solar evaporator with an evaporation rate of 4.89 kg m h under 1 sun in self-contained mode. The optimized solar evaporation rate is increased to 18.88 kg m h under 1 sun with a facile truncated cone reflector, exceeding all known solar steam evaporators. This innovative design holds immense promise for desalination and water purification owing to its simple preparation, high efficiency and durability.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11531493PMC
http://dx.doi.org/10.1038/s41467-024-53902-1DOI Listing

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