Tailoring the selective generation of oxidative organic radicals for toxic-- free water decontamination

• 成果类型: Article
• 署名作者: Wu, Jing-Hang; Yang, Tian-Hao; Sun, Yi-Jiao; Min, Yuan; Hu, Yi; Chen, Fei; Chen, Jie-Jie; Yu, Han-Qing
• 署名单位: Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chongqing University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-13945
• DOI: 10.1073/pnas.2403544121
• 发表日期: 2024-06-04
• 关键词: peracetic-acid; uv/peracetic acid; degradation; peroxymonosulfate; activation; PRODUCTS; uv/h2o2

摘要

Peracetic acid (PAA) is emerging as a versatile agent for generating long - lived and selectively oxidative organic radicals (R-O center dot ). Currently, the conventional transition metal- based activation strategies still suffer from metal ion leaching, undesirable by - products formation, and uncontrolled reactive species production. To address these challenges, we present a method employing BiOI with a unique electron structure as a PAA activator, thereby predominantly generating CH 3 C(O)O center dot radicals. The specificity of CH 3 C(O) O center dot generation ensured the superior performance of the BiOI/PAA system across a wide pH range (2.0 to 11.0), even in the presence of complex interfering substances such as humic acids, chloride ions, bicarbonate ions, and real - world water matrices. Unlike conventional catalytic oxidative methods, the BiOI/PAA system degrades sulfonamides without producing any toxic by - products. Our findings demonstrate the advantages of CH 3 C(O)O center dot in water decontamination and pave the way for the development of eco - friendly water decontaminations based on organic peroxides.