Synergism of adsorption and ROS-dominated catalytic oxidation in activating peroxymonosulfate by magnetic hybrid MOFs for selective removal of organophosphorus pesticides

Zheng, Weisheng; Sun, Yue; Gu, Yingpeng

doi:10.1016/j.cej.2023.141668

Cited by 14 publications

(5 citation statements)

References 66 publications

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“…However, the PMS-mediated PPOA degradation rate was affected a lot in the alkali condition. 36 Under pH 8.5, the surface charge of MZU was negative, so HSO 5…”

Section: •−mentioning

confidence: 99%

Section: Aop Mechanism Of Mofs and Mof-based Compositesmentioning

confidence: 99%

“…As reported by Zheng et al, different pH (3, 5, and 8) did not affect the adsorption rate of PPOA by MZU because the P–O–Zr bond was the dominant role. However, the PMS-mediated PPOA degradation rate was affected a lot in the alkali condition . Under pH 8.5, the surface charge of MZU was negative, so HSO 5 – could not contact the catalyst well, leading to the inhibition of PPOA degradation.…”

Section: Aop Mechanism Of Mofs and Mof-based Compositesmentioning

confidence: 99%

“…Even in the presence of PMS, this bond exists and can assist the AOP. Zirconium (Zr) in UiO-66 are the typical absorption sites for phosphorus (P) or arsenic (As) through forming P–O–Zr or As–O–Zr bonds. , Thus, the surface of Fe 3 O 4 @ZIF-67/UiO-66 could enrich organophosphorus pesticide phenylphosphonic acid (PPOA), which favored PPOA degradation by PMS, and Co(II) sites in ZIF-67 and Fe(II) sites in Fe 3 O 4 were the active sites for PMS activation. In Zr-ferrocene (ZrFc) MOFs, besides the As–O–Zr bond, Fe sites of the Fc ligand also adsorbed As(V) by Fe–O–As coordination .…”

Section: Aop Mechanism Of Mofs and Mof-based Compositesmentioning

confidence: 99%

“…All of these contributed to the efficient LEV degradation with 47% mineralization. Zheng et al combined ZIF-67, UiO-66, and Fe 3 O 4 to endow the composite (named MZU) with the abilities of PMS activation, adsorption, and magnetic separation, to efficiently remove organophosphorus pesticides . The Co(II) sites in ZIF-67 and Fe(II) sites in Fe 3 O 4 activated PMS to degrade PPOA (Figure a).…”

Section: Aop Mechanism Of Mofs and Mof-based Compositesmentioning

confidence: 99%

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Role of Interface of Metal–Organic Frameworks and Their Composites in Persulfate-Based Advanced Oxidation Process for Water Purification

Tan,

Zhang,

et al. 2023

Langmuir

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The persulfate activation-based advanced oxidation process (PS-AOP) is an important technology in wastewater purification. Using metal–organic frameworks (MOFs) as heterogeneous catalysts in the PS-AOP showed good application potential. Considering the intrinsic advantages and disadvantages of MOF materials, combining MOFs with other functional materials has also shown excellent PS activation performance and even achieves certain functional expansion. This Review introduces the classification of MOFs and MOF-based composites and the latest progress of their application in PS-AOP systems. The relevant activation/degradation mechanisms are summarized and discussed. Moreover, the importance of catalyst-related interfacial interaction for developing and optimizing advanced oxidation systems is emphasized. Then, the interference behavior of environmental parameters on the interfacial reaction is analyzed. Specifically, the initial solution pH and coexisting inorganic anions may hinder the interfacial reaction process via the consumption of reactive oxygen species, affecting the activation/degradation process. This Review aims to explore and summarize the interfacial mechanism of MOF-based catalysts in the activation of PS. Hopefully, it will inspire researchers to develop new AOP strategies with more application prospects.

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“…However, the PMS-mediated PPOA degradation rate was affected a lot in the alkali condition. 36 Under pH 8.5, the surface charge of MZU was negative, so HSO 5…”

Section: •−mentioning

confidence: 99%

Section: Aop Mechanism Of Mofs and Mof-based Compositesmentioning

confidence: 99%

Section: Aop Mechanism Of Mofs and Mof-based Compositesmentioning

confidence: 99%