Abstract
The elimination of salicylic acid (SA) pollution using low-cost adsorbents has attracted much attentions, but facing a difficulty of lower adsorption ability and rapid deactivation. From the viewpoint of reaction kinetics, the orbital interaction and charge transfer between adsorbent and reactants are strongly depended on the adsorption difference in reactive sites. Herein, we propose a coupling strategy to integrate reactant adsorption and photo-degradation together. The adsorbent can self-repair the adsorption activity through a photothermal-driven selectivity of adsorption site to accelerate SA degradation (photo-assisted desorption operation). As a result, this innovative operation exhibits excellent SA removal efficiency, repeatability and stability. Our work provides a new insight into integrating adsorption and desorption kinetics simultaneously to design new-type multifunctional materials.
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