The group of JIANG Heqing at QIBEBT designed a 3D thermal film containing artificial photothermal cones with a polypyrrole (PPy) coating via chemical vapor deposition polymerization (CVDP). Absorbance was around 99 % in the entire solar spectrum, comparable to the performances of super-black materials. In actual seawater tests in Jiaozhou Bay the 3D hollow cone thermal film showed good stability, and 3.5 times the evaporation efficiency of natural evaporation.

China Bio news release, June 14, 2018