Blackbody-Inspired Array Structural Polypyrrole-Sunflower Disc with Extremely High Light Absorption for Efficient Photothermal Evaporation.The three-dimensional (3D) structural design of solar evaporators has been considered as one of the most promising approaches toward enhancing photothermal performance by improving light absorption and the available evaporation area.  Moreover, a facile pyrrole polymerization method was introduced to further improve SFD light absorption and enhance the photothermal performance of SFD.  During photothermal evaporation, the increased evaporation area of the 3D array structural SFD could effectively reduce heat loss to the environment because the inherent microporous structure of the SFD leaves and cellulose hydrophilicity provide channels for water transport.  Thus, the 3D array structural PPy-SFD is a possible candidate for high-efficiency photothermal evaporators.
THERM