Persulfate activation by ferrocene-based metal–organic framework microspheres for efficient oxidation of orange acid 7

Lv, Xiaoyu; Leng, Yanqiu; Wang, Rongyao; Yan, Wei; Ren, Xiaohua; Guo, Weilin

doi:10.1007/s11356-022-18669-2

Cited by 8 publications

(5 citation statements)

References 31 publications

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“…The ferrocenyl (≡ Fc) in MOFs was a redox mediator with excellent performance, which accelerated the electron transfer through reversible redox reactions and led to the rapid reduction of Fe(III), Mn(III), and Mn(IV) (Eqs. 4-6) (Lv et al, 2022). The more reduced transition metal ions were produced, the more amount of SO 4…”

Section: Mechanism Of Persulfate Activationmentioning

confidence: 99%

“…Fc-based MOFs have good thermal stability and are a promising material with a large internal surface area. Lv et al fabricated three kind of Metal-Fc-MOFs (Co, Mn, Fe) using hydrothermal synthesis and found that the Co-Fc-MOFs was most effective at activating PS to degratation pollutants (Lv et al, 2022). However, cobalt was toxic and di cult to use on a large scale.…”

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confidence: 99%

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Controllable synthesis of FeMn bimetallic ferrocene-based metal–organic frameworks to boost the catalytic efficiency for removal of organic pollutants

Wang

et al. 2022

Environ Sci Pollut Res

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A series of FeMn bimetallic ferrocene-based metal-organic frameworks (FeMn-Fc-MOFs) with various molar ratios of Fe and Mn (1:9, 2:8, 4:6, 6:4) were successfully synthesized using a simple hydrothermal synthesis method and employed as an e cient activator on persulfate (PS) activation for water decontamination. Characterizations demonstrated that Fe and Mn were smoothly introduced into ferrocene-based MOFs and various molar ratios of Fe:Mn had some in uence on crystallinity and surface structure of FeMn-Fc-MOFs. Within 120 min, Fe 4 Mn 6 -Fc-MOFs demonstrated the best catalytic activity among the different molar ratios, and acid orange 7(AO7) degradation rate was up to 92.0%. In addition, electrochemical experiments revealed that Fe 4 Mn 6 -Fc-MOFs possessed superior electron transfer capability than other FeMn-Fc-MOFs, leading to better catalytic performance. Moreover, quenching tests and electron paramagnetic resonance (EPR) detection indicated that hydroxyl radicals and sulfate radicals were both responsible for AO7 decomposition. Notably, the redox cycle of Fe(II)/Fe(III) and Mn(II)/Mn(IV) was discovered in the Fe 4 Mn 6 -Fc-MOFs/PS system, which was considered as the limiting process for the cleavage of the O-O bond in PS to generate active radicals. Ultimately, the Fe 4 Mn 6 -Fc-MOFs exhibits an excellent universality and good cycling stability for 5 continuous runs. This paper broadens the application of ferrocene-based MOFs on heterogeneous PS activation in environmental catalysis. HighlightsFeMn-Fc-MOFs catalysts with various molar ratios were synthesized by hydrothermal method.The Fe 4 Mn 6 -Fc-MOFs exhibited the best catalytic performance due to it's excellent electrochemical properties. SO 4•− and • OH were the main radicals in catalytic degradation of acid orange 7.The synergistic effect of Fe and Mn accelerates the redox reaction.

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Section: Mechanism Of Persulfate Activationmentioning

confidence: 99%

mentioning

confidence: 99%

Controllable synthesis of FeMn bimetallic ferrocene-based metal–organic frameworks to boost the catalytic efficiency for removal of organic pollutants

Wang

et al. 2022

Environ Sci Pollut Res

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“…Since Oxone activation involves redox reactions between catalysts and Oxone, the electrochemical properties of catalysts may play critical roles in activating Oxone. 42,43 As H-Co@NC substantially outperformed S-Co@NC, it might be interesting to further explore their electrochemical differences. Fig.…”

Section: Degradation Of Cip By H-co@nc + Oxone Systemmentioning

confidence: 99%

Emerging investigator series: enhancing the degradation of ciprofloxacin in water using Oxone activated by urchin-like cubic and hollow-structured cobalt@N-doped carbon prepared by etching-engineering: a comparative study with mechanistic and eco-toxic assessments

Duong

Park

Wen

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…As the activation of Oxone involves electron transfer and redox reactions [28], heterogeneously catalytic Oxone activation largely relates to electrochemical properties [29]. Therefore, it would be interesting to further probe into the electrochemical behaviors of these CCMs for distinguishing their different catalytic activities of Oxone activation.…”

Section: Degradation Of Ar By Oxone Activation Using Different Catalystsmentioning

confidence: 99%

Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

et al. 2022

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As cobalt (Co) has been the most useful element for activating Oxone to generate SO4•−, this study aims to develop a hierarchical catalyst with nanoscale functionality and macroscale convenience by decorating nanoscale Co-based oxides on macroscale supports. Specifically, a facile protocol is proposed by utilizing Cu mesh itself as a Cu source for fabricating CuCo2O4 on Cu mesh. By changing the dosages of the Co precursor and carbamide, various nanostructures of CuCo2O4 grown on a Cu mesh can be afforded, including nanoscale needles, flowers, and sheets. Even though the Cu mesh itself can be also transformed to a Cu-Oxide mesh, the growth of CuCo2O4 on the Cu mesh significantly improves its physical, chemical, and electrochemical properties, making these CuCo2O4@Cu meshes much more superior catalysts for activating Oxone to degrade the Azo toxicant, Acid Red 27. More interestingly, the flower-like CuCo2O4@Cu mesh exhibits a higher specific surface area and more superior electrochemical performance, enabling the flower-like CuCo2O4@Cu mesh to show the highest catalytic activity for Oxone activation to degrade Acid Red 27. The flower-like CuCo2O4@Cu mesh also exhibits a much lower Ea of Acid Red 27 degradation than the reported catalysts. These results demonstrate that CuCo2O4@Cu meshes are advantageous heterogeneous catalysts for Oxone activation, and especially, the flower-like CuCo2O4@Cu mesh appears as the most effective CuCo2O4@Cu mesh to eliminate the toxic Acid Red 27.

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Persulfate activation by ferrocene-based metal–organic framework microspheres for efficient oxidation of orange acid 7

Cited by 8 publications

References 31 publications

Controllable synthesis of FeMn bimetallic ferrocene-based metal–organic frameworks to boost the catalytic efficiency for removal of organic pollutants

Controllable synthesis of FeMn bimetallic ferrocene-based metal–organic frameworks to boost the catalytic efficiency for removal of organic pollutants

Emerging investigator series: enhancing the degradation of ciprofloxacin in water using Oxone activated by urchin-like cubic and hollow-structured cobalt@N-doped carbon prepared by etching-engineering: a comparative study with mechanistic and eco-toxic assessments

Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

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