Room-temperature dissolution of PbI2 by a PEGylated deep eutectic solvent with high efficiency

Abstract

The dissolution of lead iodide (PbI₂) is very important for the purpose of avoiding environmental pollution. Here, an environmentally benign polyethylene glycol-based deep eutectic solvent (PEGylated DES) has been found to dissolve PbI₂ with a 54.35% mass fraction at room temperature (25 °C), which is 716.1 times that in water (0.0759% mass fraction) at similar conditions. Furthermore, the dissolved PbI₂ could be simply recycled by the addition of water as an antisolvent at room temperature. This work provides a green method for the recycling of toxic PbI₂ with high performance at mild conditions.