Facile synthesis of multifunctional acylhydrazone-based covalent organic polymer for rapid removing Hg(II) and Ibuprofen from water

作者：Zhu, Haishan; Ni, Cailing^*; Zhou, Longhua; Chen, Yanqing; Qin, Yuancheng^*

来源：Journal of Environmental Chemical Engineering, 2023, 11(1): 109228.

DOI：10.1016/j.jece.2022.109228

• Bifunctional adsorbents
• COPs
• Water pollutants
• Fast remove

Covalent organic polymers (COPs) are one of the most efficient and cost-effective adsorbents for removing heavy metals and antibiotics. Herein, three novel COPs were synthesized by a unique aldehyde and three hydrazine amines possessing varying numbers of acylhydrazone groups. And the H-COP-3 which is rich in acylhydrazone bonds gave the highest adsorption capacity (639.751 mg g-1) among the three materials on removing Hg(II) and equilibrium within 15 min, attributing to the strong affinity between acylhydrazone and Hg(II). Owing to the existence of hydrogen bonding and 7C-7C stacking in the H-COPs and ibuprofen (IBP), the adsorption capacity of IBP on both new adsorbents was more than 230 mg g-1 showing no obvious disparity. Furthermore, H-COPs exhibit high stability over a wide pH range and still possess considerable Hg(II) and IBP adsorption capacity after multiple cycles. Our results reflect the great potential of these acylhydrazone-based COPs for environmental remediation.

• 单位
  南昌航空大学