Tailoring the selective generation of oxidative organic radicals for toxic-by-product-free water decontamination.
Proc Natl Acad Sci U S A
; 121(23): e2403544121, 2024 Jun 04.
Article
em En
| MEDLINE
| ID: mdl-38805289
ABSTRACT
Peracetic acid (PAA) is emerging as a versatile agent for generating long-lived and selectively oxidative organic radicals (R-Oâ¢). 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 CH3C(O)O⢠radicals. The specificity of CH3C(O)O⢠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 CH3C(O)O⢠in water decontamination and pave the way for the development of eco-friendly water decontaminations based on organic peroxides.
Texto completo:
1
Bases de dados:
MEDLINE
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China