Functional polymers-assisted confined pyrolysis strategy to transform MOF into hierarchical Co/N-doped carbon for peroxymonosulfate advanced oxidation processes

Environmentally friendly MOFs derived carbon-based catalysts with reasonable porous structure and composi-tion have exhibited distinguished effect on persulfate advanced oxidation processes (AOPs). Here, functional polymers including dopamine (PDA) and phenolic resin (RF) assisted confined pyrolysis strategy was raised to prepare MOFs derived hierarchical Co/N-doped carbon. Functional polymers shell endowed catalysts with some advantages: (i) achieved confined pyrolysis function; (ii) achieved heteroatomic doping; (iii) phenolic resin protected ZIF-67 from being PDA etching. To better understand the connection between composition and structure, different polymer dosage (0.2, 0.4, and 0.6 g) and pyrolysis temperature (700-1000 degrees C) were employed. According to the findings, 0.4-PAC-8 had a higher degradation efficiency (k = 0.295 min-1) for the model contaminant tetracycline (TTCH) than the other materials with the largest specific surface area (403 m2/ g), adequate hierarchical porous structure, and ideal composition. Degradation mechanism used to be tested by way of EPR and quenching experiments, and the degradation pathways have been verified through 3D-EEM and LC-MS. Degradation products toxicity of simulation and test indicated that MOFs derived carbon-based catalysts were reliable in environmental remediation.

Automated summary

Environmentally friendly MOFs derived carbon-based catalysts were prepared using a confined pyrolysis strategy assisted by functional polymers. The catalysts exhibited high degradation efficiency for tetracycline and proved reliable in environmental remediation through various experiments.