Deep eutectic solvent-imprinted polymer based on magnetic UiO-66-NH2 for fast and selective removal of benzydamine hydrochloride in environmental samples

Benzydamine hydrochloride (BDH) is a kind of nonsteroidal anti-inflammatory drugs for the treatment of inflammation. However, research on removing BDH from the environment has not attracted attention. Herein, a green deep eutectic solvent (DES) as functional monomer and magnetic metal organic frame-works (MUiO-66-NH2) as supporter help to form more effective recognition sites and easy separation properties in polymerization procedure of the surface imprinted polymer (DES-MMIP). The performance of novel DES-MMIP for the selective removal of the template (BDH) in water was characterized and eval-uated. The equilibrium experiment results showed that the maximum adsorption capacity of BDH can reach 41.18 mg g(-1), and fast adsorption equilibrium was obtained within 30 min. Due to the participation of magnetic MUiO-66-NH2 and DES, the prepared DES-MMIP had excellent separability, and the adsorp-tion capacity towards template (BDH) was 1.4-2.6 times that of other commercial adsorbents (PS-DVB, HLB, silica and zeolite). The DES-MMIP combined with UV-via was successfully applied to remove BDH from eight environmental samples. Additionally, the DES-MMIP adsorbent can be reused 5 times and still maintain excellent recovery. This work provides a promising method for preparing an efficient adsorbent for the fast separation and selective removal of BDH in the environmental field.(c) 2023 Elsevier B.V. All rights reserved.