Quantitative analysis the role of reactive oxygen species (ROS) in a Fe/Cu/O3 process for p-nitrophenol treatment

8th International Conference on Environment Science and Engineering

生态环境科学

Xiong, Z.K.^1 ; Lai, B.^1 ; Yang, P.^1

Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu

610065, China^1

关键词: Bimetallic catalysts;    Catalytic ability;    Catalytic ozonation;    COD removal efficiency;    Corrosion products;    Ozone decomposition;    Reactive oxygen species;    Solution treatments;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/167/1/012007/pdf
DOI  :  10.1088/1755-1315/167/1/012007

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this study, a highly efficient catalytic ozonation with Fe/Cu bimetallic catalyst was developed for p-nitrophenol (PNP) aqueous solution treatment. The result shows that the high COD removal (94.1%) was obtained by the Fe/Cu/O3 process, owing to the strong synergetic effect between Fe/Cu and ozone. In addition, the COD removal (94.1%) obtained by the Fe/Cu/O3 process after 30 min treatment is twice more than the sum (45.2%) of COD removal efficiencies obtained by sole ozone and sole Fe/Cu. These results confirm that the synergetic effect between Fe/Cu and ozone played a vital role in the degradation of PNP in aqueous solution. Additionally, the formed corrosion products in exhibited high catalytic ability for ozone decomposition, which could generate more •OH to degrade PNP in aqueous solution. Finally, the role of various reactive oxygen species (ROS) was quantitative analyzed by a series of trapping experiments.