Spontaneous Perfluorooctanoic Acid Degradation at Gas–Liquid Interfaces

IF 15.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of the American Chemical Society Pub Date : 2025-09-03 DOI:10.1021/jacs.5c09722

Yunqian Chen, Zhongyu Guo, Maria Angelaki, Yoan Carreira Mendes Da Silva, Junwei Song, Wanqi Wu, Jingxin Lin, Adrien Gandolfo, Jianmin Chen* and Christian George*,

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引用次数: 0

Abstract

Perfluorooctanoic acid (PFOA), widely used in various industries and released during cooking as a PTFE precursor, poses significant environmental concerns due to its persistence and toxicity. This study investigated the degradation behavior of PFOA at the gas–liquid interface under diverse conditions. The results demonstrate that the coexistence of salts, particularly NaBr, significantly enhances PFOA degradation by promoting electron transfer reactions. Alkaline conditions (pH 9.8) and the presence of oxygen further facilitate its degradation, whereas acidic conditions hinder this process. Mechanistic analysis further confirmed that hydroxyl radicals (•OH) and hydrated electrons (e_aq^–) play critical roles in the observed degradation. This work provides new insights into the transformation of PFAS under diverse conditions and offers a basis for developing strategies to degrade PFOA into environmentally benign species.

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全氟辛酸在气液界面的自发降解。

全氟辛酸（PFOA）广泛用于各种工业，并在烹饪过程中作为聚四氟乙烯前体释放，由于其持久性和毒性而引起严重的环境问题。研究了不同条件下PFOA在气液界面的降解行为。结果表明，盐的共存，特别是NaBr的存在，通过促进电子转移反应，显著地促进了PFOA的降解。碱性条件（pH值9.8）和氧气的存在进一步促进了其降解，而酸性条件则阻碍了这一过程。机理分析进一步证实了羟基自由基（•OH）和水合电子（eaq-）在观察到的降解中起关键作用。本研究为PFOA在不同条件下的转化提供了新的见解，并为制定将PFOA降解为环境友好物种的策略提供了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the American Chemical Society 化学-化学综合

CiteScore

24.40

自引率

6.00%

发文量

2398

审稿时长

1.6 months

期刊介绍： The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.