Use of Quantum Dots Polymer and Its Composite for Water Purification Through Solar Desalination

Abstract

Today, humanity is facing challenges due to population growth, depletion of natural resources, and global warming. Water is one of the basic and important things among the others for the existence of life on earth. Due to population growth and drought of natural aquifers the demand for water is increasing day by day. So, human beings are searching for new techniques through which they can take out potable water from nature. Sea is the largest water reservoir on earth but due to salinity, it is not used directly as drinking water. So humans are trying to find various ways to make it potable, desalination through solar energy is an important one because it reduces our dependency on more energy-consuming traditional solar desalination methods like MSF (multi-stage flash), RO (reverse osmosis), ED (electrodialysis), MED (Multi effect desalination) and other. To solve the problem of water stress, cost-effective and environment-friendly techniques are needed for water purification and treatment. At present work, suggesting a new technique of desalination to use Quantum dots evaporator in which a q-dot-based glass matrix absorbed solar energy and increases the rate of evaporation from wastewater. Q-dot material is used with black paint coating on the basin liner, the distillate output has increased by 27% compared to traditional solar still. The Quantum dots composite and polymer are less expensive, biocompatible, and eco-friendly in nature, which we can be used for water purification and treatment in future work. © 2022 Elsevier Inc. All rights reserved.