Angewandte Chemie International Edition·· 10 小时前精选AI 评分58
TiO2 光照体系生成硝酸根自由基，9 h 降解约 90% PFOA
Photocatalytically Generated Nitrate Radicals Drive Decomposition of Perfluorooctanoic Acid
AI 导读
在酸性 pH 下辐照 TiO2 水悬浮液生成的硝酸根自由基（NO3•）可驱动全氟辛酸（PFOA）分解，9 h 内降解约 90%，氟释放约 57%。反应速率随初始硝酸根离子浓度变化，且硝酸根离子在过程中总量保持不变，表明其起催化作用；时间分辨瞬态吸收光谱首次直接证实该条件下 NO3• 的存在。
推荐理由
原文用瞬态吸收光谱直接捕捉到 NO3•，并给出 PFOA 降解路径与氟释放数据，可供评估该催化路线的可行性。
图表、补充材料与最终表述以原文为准。阅读原文
来源：Angewandte Chemie International Edition · doi.org
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