One-step fabrication of all-in-one three-dimensional porous polypyrrole/polydopamine structure for efficient solar vapor generation

The proposed three-dimensional (3D) porous polypyrrole/polydopamine evaporator is all-in-one designed via a simple one-step heating-assisted rapid oxidative polymerization strategy based on Fe3+, pyrrole (PY) and dopamine (DA). The evaporator with high water evaporation rate (2.12 kg m-2h−1) displays great potential for practical water purification towards high-concentration brine, acid-base solutions, simulated seawater, oil–water emulsion, dye wastewater, heavy metal wastewater, as well as reliable pure water yields in an outdoor application.