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Photocatalysts for chemical-free PFOA degradation – What we know and where we go from here?
Citation:
Arana Juve, J., J. Donoso Reece, M. Wong, Z. Wei, AND Mohamed Ateia Ibrahim. Photocatalysts for chemical-free PFOA degradation – What we know and where we go from here? JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, 462:132651, (2024). https://doi.org/10.1016/j.jhazmat.2023.132651
Impact/Purpose:
To the best of our knowledge, this is the first review aiming to group photocatalysts describing their developments in the PFOA degradation performance, and to compare the catalyst efficiency from an economical and practical approach.
Description:
Perfluorooctanoic acid (PFOA) is a toxic and recalcitrant perfluoroalkyl substance commonly detected in the environment. Its low concentration challenges the development of effective degradation techniques, which demands intensive chemical and energy consumption. The recent stringent health advisories and the upgrowth and advances in photocatalytic technologies claim the need to evaluate and compare the state-of-the-art. Among these systems, chemical-free photocatalysis emerges as a cost-effective and sustainable solution for PFOA degradation and potentially other perfluorinated carboxylic acids. This review (I) classifies the state-of-the-art of chemical-free photocatalysts for PFOA degradation in families of materials (Ti, Fe, In, Ga, Bi, Si, and BN), (II) describes the evolution of catalysts, identifies and discusses the strategies to enhance their performance, (III) proposes a simplified cost evaluation tool for simple techno-economical analysis of the materials; (IV) compares the features of the catalysts expanding the classic degradation focus to other essential parameters, and (V) identifies current research gaps and future research opportunities to enhance the photocatalyst performance. We aim that this critical review will assist researchers and practitioners to develop rational photocatalyst designs and identify research gaps for green and effective PFAS degradation.
URLs/Downloads:
DOI: Photocatalysts for chemical-free PFOA degradation – What we know and where we go from here?