Enhancement of Adsorption Capabilities by Surface Functionalization

Abstract

Adsorption is a surface treatment that results in the transfer of gases or solutes to the surface of the adsorbent. Adsorption affinities depend on selective adsorption and are inevitably different for each type of adsorbate. The choice of different surface functionalities can enhance or inhibit specific adsorption interactions. The effect of functional groups on the adsorption properties of various porous materials is a topic that has been extensively studied, but recent studies continue to provide unexpected results. The effect of each functional group strongly depends on the porous material and the adsorption mechanism. Therefore functionalization methods to increase the density of the potential energy well in the adsorption regime and porous materials with different pore sizes and shapes are being developed, which are directly related to their ability to maximize overlapping potentials. In this chapter, surface functionalization and the impact of this change on the adsorption capacity are discussed. © 2023 Elsevier Inc. All rights reserved.