Advances in Fenton-like water treatment technologies based on singlet oxygen
Heterogeneous Fenton-like oxidation technology is considered one of the most promising water treatment methods.However,its practical application is limited by the low utilization efficiency of oxidants and significant consumption by water matrices.Recently,Fenton-like reactions that generate singlet oxygen(1O2)as the primary reactive species have demonstrated unique advantages in selectively degrading target pollutants in complex wastewater due to its strong electrophilicity,relatively long half-life,and robust environmental resistance.This paper systematically summarizes the generation mechanisms of 1O2 in Fenton-like reactions and elucidates the key factors influencing the selective generation of 1O2.Various non-radical detection and identification methods for 1O2 are then thoroughly analyzed,highlighting their qualitative and quantitative strengths and weaknesses along with corresponding strategies.Finally,the progress in applying 1O2-dominated Fenton-like technologies in water purification is reviewed,and the challenges and future trends in this research field are discussed.
Fenton-likesinglet oxygenselectivitydetection and identificationwater treatment
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