Ultradurable fluorinated V2AlC for peroxymonosulfate activation in organic pollutant degradation processes

Vanadium-based catalysts are considered the most promising materials to replace cobalt-based for activation of peroxymonosulfate (PMS) degrade organic pollutants. However, these traditional vanadium species easily leak out metal ions that can affect environment, even though is much less than cobalt. Compared other vanadium-based catalysts, e.g., V2O3, fluorinated V2AlC shows a high and constant activity reusability regarding PMS activation. Furthermore, it features extremely low ion leakage. Active oxygen scavenging electron spin resonance measurements reveal main reactive was 1O2, which induced by two-dimensional confinement effect. More importantly, real-life application tetracycline (TC) degradation, introduction fluorine changed adsorption mode TC over catalyst, thereby changing degradation path. The intermediate products were detected liquid-chromatography mass spectroscopy (LC-MS), possible path proposed. environmental impact test decomposition showed toxicity intermediates greatly reduced. Therefore, investigated ultradurable catalyst material provides basis practical advanced oxidation technology.