LAUSR

Abstract Decontamination of toxic pollutants by porous nanomaterials with high removal efficiency has aroused immense concern in recent years. Herein, the newly designed magnetic porous organic polymers with abundant carboxyl groups (CMPOPs) were prepared via a facile in-situ surface polymerization strategy and their adsorption performance towards malachite green (MG) in aquaculture wastewater was investigated. The strong interactions between CMPOPs and malachite green, especially the strong electrostatic interaction between carboxyl groups and target molecules, were favorable for adsorption, where the maximum adsorption capacity of CMPOPs was in the range of 569.4–779.1 mg g−1. Furthermore, the contaminant in aqueous solutions can be adsorbed within 2 min when the initial concentration was 100.0 mg L−1. Apart from their superior adsorption performance, the easy separation feature and excellent regeneration property of CMPOPs rendered them to become an alternative adsorbent for toxic contaminant removal from aquaculture wastewater.