“…Sulfur dioxide (SO 2 ), another greenhouse gas, is one of the main constituents responsible for acid deposition, which has adverse effects on materials, natural resources, and human health . In the past, in order to mitigate the emission of CO 2 and SO 2 gases, researchers have put forth enormous effort for the development of various technologies to capture them. − The most efficient and commonly used industrial technique to capture CO 2 is amine-based postcombustion CO 2 capture. , However, this technique has several drawbacks like amine degradation, equipment corrosion, and environmental issues. − Similarly, to mitigate SO 2 emission, most industrial processes use the wet limestone flue gas desulfurization technique. , However, this method is irreversible and leads to unwanted byproducts. , Therefore, the search for a superior method to overcome the drawbacks of conventional methods − led the researchers toward the use of novel materials such ionic liquids (ILs). − Owing to their unique properties, − ILs exhibited significant gas separation propensity. , Although gas absorption by ILs is a reversible process , with no side products, ILs are barely used in industries for gas capturing on a large scale because of their high production cost and low absorption capacity. , Recently, deep eutectic solvents (DESs) have emerged as alternative media for capturing gases − because of their biodegradable nature, ease of preparation, and lower cost of the starting materials. − DESs are commonly referred to as IL analogs because they share similar properties such as tunable character, high thermal stability, and low vapor pressure along with some new improved properties like biodegradability and low toxicity. − ...…”