A highly efficient and sustainable photoabsorber in solar-driven seawater desalination and wastewater purification

Abstract

Producing freshwater from seawater and wastewater is of great importance through interfacial solar steam generation (ISSG).

A durable hydrophobic photothermal membrane based on a honeycomb structure MXene for stable and efficient solar desalination

“… 23 Chen and co-workers employed the tetrapyridylporphyrin as an interface in water evaporation with a water evaporation rate of 0.69 kg m −2 h −1 and a stable voltage up to 60 mV. 24 Furthermore, laser-treated wood and carbonized pine cone were chosen as photothermal materials due to their high conversion efficiency and evaporation flux reported by Wang et al 25 and Goharshadi et al 26 Although diverse approaches have been employed to improve the light-to-heat conversion efficiency, in practice, the overall steam production capability and water production capacity still have a lot of room for improvement. In typical solar thermal evaporation systems often have salt crystals on the surface of the photothermal film, which leads to a significant reduction in the efficiency of steam generation and the destruction of the film.…”