The researchers point out that the high efficiency is achieved due to the combination of multiple properties simultaneously exhibited by this as-prepared bulk 3D crosslinked honeycomb graphene material, including its intrinsic blackbody-like high absorption, extremely low thermal loss to environment, hydrophilicity, and automatic water transportation to the absorber by capillary force through the microchannels present in the structure.
With these results, an efficient and scalable desalination (4 orders of salinity decrement) and sewage treatment device was demonstrated. A model for this converter has been used to understand the high efficiency and mechanism.
Furthermore, different from other desalination materials, this novel lightweight and elastic material is also highly portable for point of use and would be ideal for both personal and industrial application.
"This easy-to-use carbon material could provide many possibilities for high efficient solar energy harvesting," the authors conclude.