Enhanced Interfacial Solar Evaporation through Formation of Micro‐Meniscuses and Microdroplets to Reduce Evaporation Enthalpy

Abstract Interfacial solar water evaporation, a promising way to address water shortages and water pollution, has attracted increasing attention. However, low evaporation rates limit its practical applications. Reducing evaporation enthalpy is one of the most efficient ways to improve the evaporation rate. In this study, micro‐meniscuses and microdroplets (MMDs) are found and observed on the surface of the polypyrrole nanoarrays on hydrophilic carbon cloth. The MMDs can reduce the evaporation enthalpy of the system, thus resulting in a high evaporation rate of 2.16 kg m −2 h −1 in pure water under 1 sun. Dynamic calculations imply that the evaporation rate of MMDs is approximately at least 1.7 times and 1.8…

• NN
  National Natural Science Foundation of China

  Awards: 52070162, 51778562
• NK
  National Key Research and Development Program of China

  Award: 2018YFA0901300