A Review of Emerging Photo-Induced Degradation Methods for Per- and Polyfluoroalkyl Substances (PFAS) in Water

07 July 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


The remediation of per- and polyfluoroalkyl substances (PFAS) in water continues to garner significant attention due to their environmental persistence and adverse health effects. Among the various PFAS remediation methods, photo-induced approaches have recently emerged as promising techniques for the degradation of these persistent contaminants. However, many questions remain unanswered regarding the detailed mechanisms in these photo-induced methods as well as the best ways to leverage these approaches for PFAS degradation. In this review, we provide an update on recent experimental and theoretical developments in photo-induced PFAS degradation techniques over the past 2 - 5 years. We conclude with a perspective of promising research directions in this vibrant area and give recommendations on future experimental and computational approaches needed to further advance these photo-induced remediation capabilities.


perfluoroalkyl substances
PFAS removal technologies
environmental chemistry
water treatment
defluorination reactions
time-dependent density functional theory
per- and polyfluoroalkyl substances


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