化学
连二亚硫酸钠
钒
降级(电信)
连二亚硫酸钠
猝灭(荧光)
环境修复
氧气
氧化还原
活性氧
激进的
光化学
无机化学
污染
有机化学
计算机科学
生物化学
量子力学
酶
生态学
物理
荧光
生物
电信
作者
Li Lai,Peng Zhou,Hongyu Zhou,Minglu Sun,Yue Yuan,Yang Liu,Gang Yao,Bo Lai
标识
DOI:10.1016/j.apcatb.2021.120470
摘要
Coupling dithionite (DNT) with FeVO4 induced PMS activation (FeVO4/PMS/DNT) effectuates fast heterogeneous Fe(III) reduction to generate multitudinous reactive oxygen species (ROS) for fast degradation of carbamazepine (2.5 mg/L, >90 % degradation efficiency within 300 s) in batch mode. The Fe(III)/Fe(II) circulation propelled by DNT and reduced V species experiences two stages. DNT induces SO2− generation, which is a highly active species with strong reducibility for Fe and V reduction. The reduced V species donate electrons to ≡Fe(III) via Fe-O-V bond rather than directly react with PMS, implying introducing polyvalent V to modulate Fe-based materials intensifies DNT utilization and alleviates ROS quenching effects. Moreover, FeVO4 crystalline form regains after reaction, and FeVO4/PMS/DNT system has an excellent reutilization and strong resistance to natural waters. Our discovery sheds new light on acceleration of heterogenous Fe(III)/Fe(II) circulation to promote Fenton-like oxidation, it may be a long-lasting strategy for water remediation.
科研通智能强力驱动
Strongly Powered by AbleSci AI