Metal-organic frameworks with peroxidase-like activity for efficient removal of aflatoxin B1

Aflatoxin B-1 (AFB(1)), a naturally produced toxin existing in major food crops, is highly toxic and carcinogenic to human and animals. In this study, a reusable material, Pd@PCN-222 with great adsorption performance and peroxidase-like activity was synthesized for the removal of AFB(1). Pd@PCN-222 exhibited great adsorption performance owing to hierarchical porous structure. Pd@PCN-222 also could catalyze the AFB(1) in the presence of H2O2 due to the Fe-tetrakis (4-carboxyphenyl) porphyrin and Pd as effective peroxidase active site, which improved the removal efficiency of AFB(1). Pd@PCN-222 was applied for the removal of AFB(1) with a removal rate of 96.52% in 2 h. Owing to the advantages of high removal efficiency and reusability, Pd@PCN-222 had great application potential in AFB(1) removal.

Automated summary

A reusable material, Pd@PCN-222, with great adsorption performance and peroxidase-like activity, was synthesized for the efficient removal of Aflatoxin B-1 (AFB(1)). Pd@PCN-222 exhibited excellent adsorption performance and catalytic activity, leading to a removal rate of 96.52% for AFB(1).