Sandwich structure stabilized atomic Fe catalyst for highly efficient Fenton-like reaction at all pH values

Zuo, Sijin; Jin, Xuming; Wang, Xinwei; Lu, Yunhao; Zhu, Qi; Wang, Jiangwei; Liu, Weiping; Du, Yonghua; Wang, Juan

doi:10.1016/j.apcatb.2020.119551

Cited by 120 publications

(33 citation statements)

References 46 publications

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“…To determine the main reactive species for TC degradation, quenching experiments and ESR tests were carried out. TBA, MeOH, BQ, NaN 3 , AO, and Mn(OAc) 2 were selected as the quenchers for ˙OH, SO 4 ˙ − /˙OH, O 2 ˙ – , 1 O 2 , h + , and e − , respectively 10,15,44,45 . As displayed in Figure 6A, the addition of NaN 3 , BQ, TBA, MeOH, or AO inhibited the TC degradation, showing degradation rates of 88.1%, 86.4%, 79.7%, 66.1%, or 47.4%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Filter‐membrane treatment of continuous‐flow tetracycline through photocatalysis‐assisted peroxydisulfate oxidation

Zhu

Tang

et al. 2022

AIChE Journal

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Herein, we craft a high‐performance advanced oxidation process (AOP) of photocatalysis‐coupled peroxydisulfate (PDS) system toward practical applications in organic wastewater treatment. CoFe2O4 nanoparticles well grow onto TiO2 nanotube arrays (TNAs) mesh (CoFe2O4/TNAs). The artful CoFe2O4/TNAs composite plays a bifunctional role in the proposed AOP. On one hand, CoFe2O4/TNAs itself is a visible‐light‐response photocatalyst. On the other hand, the Co(II) or Fe(II) in CoFe2O4 can heterogeneously activate PDS to generate energetic active species (•OH, SO4˙–, O2˙–, and 1O2). Meanwhile, the photo‐induced electrons can be also captured by electron traps Co(III) (or Fe(III)) which are further reduced to Co(II) (or Fe(II)) for continuous activation of PDS. As a result, the robust AOP of photocatalysis‐coupled PDS can almost completely degrade 10 mg/L refractory tetracycline within 40 min. Moreover, the proposed process shows a stable continuous‐flow treatment performance. This work provides basic understanding and support for continuous‐flow treatment of organic wastewater by photocatalysis‐coupled PDS system.

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Section: Resultsmentioning

confidence: 99%

Filter‐membrane treatment of continuous‐flow tetracycline through photocatalysis‐assisted peroxydisulfate oxidation

Zhu

Tang

et al. 2022

AIChE Journal

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“…In addition, the activity and stability of the catalyst decreases due to the inevitable metal leaching and agglomeration of nanoparticles [ 26 ]. In addition to doping non-metallic elements [ 27 , 28 ], fixing the MOFs in the core–shell [ 29 , 30 ] or loading it on the macromolecular carrier [ 16 , 31 ] can also reduce the leaching of metal ions and make the metal ions disperse and not agglomerate easily. Diatomite (DE) is a naturally-occurring porous mineral with a complex three-dimensional (3D) structure [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Degradation of Tetracycline Hydrochloride by Cu-Doped MIL-101(Fe) Loaded Diatomite Heterogeneous Fenton Catalyst

Cui

Kong

et al. 2022

Nanomaterials

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In this work, the combination of high surface area diatomite with Fe and Cu bimetallic MOF material catalysts (Fe0.25Cu0.75(BDC)@DE) were synthesized by traditional solvothermal method, and exhibited efficient degradation performance to tetracycline hydrochloride (TC). The degradation results showed: Within 120 min, about 93% of TC was degraded under the optimal conditions. From the physical–chemical characterization, it can be seen that Fe and Cu play crucial roles in the reduction of Fe3+ because of their synergistic effect. The synergistic effect can not only increase the generation of hydroxyl radicals (•OH), but also improve the degradation efficiency of TC. The Lewis acid property of Cu achieved the pH range of reaction system has been expanded, and it made the material degrade well under both neutral and acidic conditions. Loading into diatomite can reduce agglomeration and metal ion leaching, thus the novel catalysts exhibited low metal ion leaching. This catalyst has good structural stability, and less loss of performance after five reaction cycles, and the degradation efficiency of the material still reached 81.8%. High performance liquid chromatography–mass spectrometry was used to analyze the degradation intermediates of TC, it provided a deep insight of the mechanism and degradation pathway of TC by bimetallic MOFs. This allows us to gain a deeper understanding of the catalytic mechanism and degradation pathway of TC degradation by bimetallic MOFS catalysts. This work has not only achieved important progress in developing high-performance catalysts for TC degradation, but has also provided useful information for the development of MOF-based catalysts for rapid environmental remediation.

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“…Moreover, because of the poor pH stability of MOF, the adaptability of these catalysts under extreme conditions remains an obstacle, which hinders their application in complex real water systems. 26 Therefore, it is still challenging to fully take advantage of the MOF nanoparticles as a photo Fenton-like catalyst, and this prompts us to have a rational design of MOF-based Fentonlike catalysts with an ideal structure.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies show that sole Fe elements in the heterogeneous Fenton-like catalysts do play an important role. 5,6,20,26 While the redox potential of Fe 2+ /Fe 3+ (0.77 V) pair is lower than that of HSO 5 − /SO 5 ˙− (2.5-3.1 V), which makes it thermodynamically unfavorable to realize the redox cycle. 52,53 Also, Zhao et al 21 recently reported that Fe in Co-Fe PBA does not contribute to the PMS activation.…”

mentioning

confidence: 99%

Confined ultrasmall MOF nanoparticles anchored on a 3D-graphene network as efficient and broad pH-adaptive photo Fenton-like catalysts

Shi

et al. 2022

Environ. Sci.: Nano

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Sandwich structure stabilized atomic Fe catalyst for highly efficient Fenton-like reaction at all pH values

Cited by 120 publications

References 46 publications

Filter‐membrane treatment of continuous‐flow tetracycline through photocatalysis‐assisted peroxydisulfate oxidation

Filter‐membrane treatment of continuous‐flow tetracycline through photocatalysis‐assisted peroxydisulfate oxidation

Degradation of Tetracycline Hydrochloride by Cu-Doped MIL-101(Fe) Loaded Diatomite Heterogeneous Fenton Catalyst

Confined ultrasmall MOF nanoparticles anchored on a 3D-graphene network as efficient and broad pH-adaptive photo Fenton-like catalysts

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