Multifunctional and sustainable chitosan-based interfacial materials for effective water evaporation, desalination, and wastewater purification: A review.

Summary: We are facing big problems with a lack of clean water, not enough energy, and dirty water. Luckily, scientists are using the power of the sun to help! They are making special water filters out of chitosan, a natural material found in crab shells. These filters use solar energy to heat up and evaporate water quickly, leaving salt and dirt behind. They are amazing because they resist salt build-up, kill germs, and keep heat trapped so they work faster. Scientists are testing them as gels, sponges, and thin films to make drinking water from the ocean and to clean up dirty wastewater. The goal is to make these solar filters even better so we can use them everywhere to help the planet!