期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 301, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2022.122039
关键词
WO3; CuFe2O4; Z-scheme system; Persulfate-assisted photocatalytic process; Quinoline degradation
资金
- National Natural Science Foundation of China [21806120]
- Shanxi Province Science Foundation for Youths [201901D211027]
- Science and Technology Innovation Projects of Higher School [201802045]
In this study, a WO3-CuFe2O4 Z-scheme system was constructed, and the photocatalytic degradation of quinoline was enhanced by adding persulfate. The results showed that the degradation efficiency of quinoline increased from 24.3% to 100% with the addition of persulfate under the appropriate conditions. The WO3-CuFe2O4 catalyst exhibited excellent reusability, and the degradation mechanism of quinoline in the WO3-CuFe2O4/VIS/PS system involved denitrification, dehydrogenation, hydroxylation, and ring breaking processes.
Quinoline is a kind of organic pollutant difficult to be biodegraded, for which the photocatalysis technology is a commonly used removal method, but the degradation performance still needs to be improved. In this work, the WO3-CuFe2O4 Z-scheme system was constructed, and the persulfate (PS)-assisted photocatalytic degradation of quinoline with WO3-CuFe2O4 by adding persulfate in the photocatalytic systems was studied. The effects of different systems and key parameters such as catalyst dosage, PS concentration and initial pH value on the degradation efficiency of quinoline were investigated. With the addition of persulfate, the degradation efficiency of quinoline increased from 24.3% to 100% in 150 min, under the condition of [PS] = 3 mmol/L, [catalyst] = 3 g/L, temperature = 25 +/- 2 degrees C, and pH = 9. And the WO3-CuFe2O4 catalyst showed excellent reusability according to the result of 5-cycle repeated experiment. The possible degradation mechanism was studied by the quenching test and the identification of intermediates and products, which indicated the degradation of quinoline in WO3-CuFe2O4/VIS/PS system was realized via denitrification, dehydrogenation, hydroxylation and ring breaking processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据