Hybrid graphenic and iron oxide photocatalysts for the decomposition of synthetic chemicals

Abstract

Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic chemicals that resist degradation, posing a significant environmental and health risk. Current methods for removing PFAS from water are often complex and costly. Here we report a simple, cost-effective method to synthesize an iron oxide/graphenic carbon (Fe/g-C) hybrid photocatalyst for PFAS degradation. This photocatalyst efficiently degrades perfluorooctanoic acid (PFOA), a common type of PFAS, achieving over 85% removal within 3 hours under ultraviolet light. The catalyst also maintains high degradation rates over extended periods, demonstrating its stability and potential for long-term use. This innovative approach offers a promising solution for addressing PFAS contamination in water, contributing to a cleaner and healthier environment. Moreira et al. developed an iron oxide/graphenic carbon hybrid photocatalyst for the decomposition of PFAS contaminants, under UV light. Their method offers a cheap and efficient alternative that achieves > 85% efficiency for PFOA decomposition under UV light.