Deep eutectic solvents-based adsorbents in environmental analysis

Deep eutectic solvents (DESs), a new class of environmentally friendly solvents, are gaining more attention from researchers for extracting and separating targeted analytes from different complex samples. DESs are liquid at room temperature and contain a hydrogen bond donor and a hydrogen bond acceptor. DESs are non-volatile solvents, have excellent thermal and electrical stability, and can easily dissolve a number of organic and inorganic substances. DESs have attracted a lot of attention as new green solvents are expected to take the place of traditional organic solvents. DESs are sustainable sol-vents that concern significant interest from researchers and various industries. They are non-flammable, chemically stable, biocompatible, biodegradable, and have low volatile content. DESs have tunable physicochemical properties that can be tailored to meet the needs of a definite task. This review sum-marizes the DESs-based adsorbent materials and its preparation characterizations and application by highlighting the unique properties such as extraction and separation applications. To summarize the DESs-based applications, this review reported up-to-date data related to this field. and also provide an easy and single path to cover the DESs-based materials and its adsorption applications. This review exploits new DESs and DESs-based materials that are diversifing into extraction and separation due to the development of DESs. (c) 2022 Elsevier B.V. All rights reserved