Efficient catalytic degradation of Congo red via activation of peroxymonosulfate with cobalt-based metal-organic framework
The construction of highly efficient and stable catalyst system for Cong red(CR)degradation is crucial on human health and environmental protection.Herein,a[Co(2,2'-bipyridine-5,5'-dicarboxylato)(H2O)]·(H2O)was developed and prepared by using CoCl2·6H2O as inorganic metal center with organic ligands 2,2'-Bipyridine-5,5'-dicarboxylic acid(BPDCH2)via a facile hydrothermal synthesis technique.An exploration of cobalt-based metal-organic framework(Co-MOF)on the catalytic degradation performance of CR via activation of peroxymonosulfate(PMS)was undertook.The Co-MOF/PMS complex demonstrated a peak efficacy of 100％in degradation under favorable experimental conditions.Notably,quenching assays coupled with liquid chromatography/quantitative time-of-flight mass spectrometry deftly elucidated the degradation intermediates and byproducts emanating from the reaction,concurrently delineating the activation cascade of PMS and the degradation pathway of CR.The research demonstrates the exceptional potential of the Co-MOF/PMS composite as an efficient catalyst for environmental purification,marking significant progress in the field of CR degradation and wastewater treatment technologies.
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