过硫酸盐
降级(电信)
光催化
机制(生物学)
化学工程
喹啉
过程(计算)
化学
材料科学
方案(数学)
环境科学
计算机科学
有机化学
催化作用
工程类
物理
数学分析
数学
量子力学
操作系统
电信
作者
Bihan Sun,Houfen Li,Wei Qian,Shuai Xue,Aijuan Zhou,Xiuping Yue
标识
DOI:10.1016/j.seppur.2022.122039
摘要
• WO 3 -CuFe 2 O 4 Z-scheme catalyst was constructed. • Quinoline removal was realized by persulfate-assisted photocatalytic process. • Photogenerated holes and · OH were the main reactive species. • Degradation mechanism and pathways of quinoline were explored. 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 WO 3 -CuFe 2 O 4 Z-scheme system was constructed, and the persulfate (PS)-assisted photocatalytic degradation of quinoline with WO 3 -CuFe 2 O 4 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 °C, and pH = 9. And the WO 3 -CuFe 2 O 4 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 WO 3 -CuFe 2 O 4 /VIS/PS system was realized via denitrification, dehydrogenation, hydroxylation and ring breaking processes.
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