Co/Fe co-doped porous graphite carbon derived from metal organic framework for microelectrolysis-Fenton catalytic degradation of Rhodamine B

Liu, Peng; Zhong, Dengjie; Xu, Yunlan; Zhong, Nianbing; Guang-jun, HE

doi:10.1016/j.jece.2021.105924

Cited by 20 publications

(4 citation statements)

References 63 publications

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“…Transition metal elements, due to their distinct non‐nuclear electronic structure, can be used to modify electrodes to increase electrocatalytic activity, which is extremely useful in the degradation process of organic pollutants in EF systems, as shown by the following equations: 23

{Co}^{2 +} - {normale}^{-} \to {Co}^{3 +}

{Fe}^{3 +} + {normale}^{-} \to {Fe}^{2 +}

{Fe}^{2 +} + {normalH}_{2} {normalO}_{2} \to {Fe}^{3 +} + {OH}^{-} + {}^{•}{OH}

{Co}^{2 +} + {normalH}_{2} {normalO}_{2} \to {Co}^{3 +} + {OH}^{-} + {}^{•}{OH}

…”

Section: Resultsmentioning

confidence: 99%

Levofloxacin degradation in electro‐Fenton system with Fe@Co/GF composite cathode

Jia

Zhao

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Elements of transition metals have a distinct non-nuclear electronic structure, and modifying electrodes with transition metals can increase electrocatalytic activity. Due to its low cost and high electrical conductivity, graphite felt (GF) is frequently used as the carbon base material for modified electrodes. GF was treated with KOH and subsequently loaded with the bimetal Fe and Co to create a cathode (Fe@Co/GF) with enhanced catalytic activity in this study.RESULTS: Under optimal experimental conditions (initial levofloxacin (LEV) concentration of 30 mg L −1 , electric voltage of 8 V, GF thickness of 3 mm, an aeration rate of 3 × 4.5 L min −1 , Na 2 SO 4 concentration of 0.05 mol L −1 , initial Fe 2+ concentration of 0.1 mmol L −1 , initial pH of 3, KOH activation temperature of 900 °C and Fe@Co ratio of 1:3), the LEV elimination rate was 90.38% and the mineralization rate was 88.53% within 160 min. Compared to the GF cathode, both the total LEV degradation rate and the total mineralization rate increased by approximately 20%. When Fe@Co/GF was used as the cathode in an electro-Fenton (EF) system without an applied iron source, the Fenton reaction could still occur. In addition, Fe@Co/GF also promoted the degradation of ciprofloxacin in the EF system. CONCLUSION: According to morphological and other statistical data, the modified cathode has a larger specific surface area, larger pores and a greater number of active sites. Electrochemical performance measurements indicate that the modified cathode is more responsive to current. Fe@Co/GF cathode was simple to prepare and contributed significantly to the LEV removal process when used as the cathode in an EF system, thereby decreasing the LEV degradation time.

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{Co}^{2 +} - {normale}^{-} \to {Co}^{3 +}

{Fe}^{3 +} + {normale}^{-} \to {Fe}^{2 +}

{Fe}^{2 +} + {normalH}_{2} {normalO}_{2} \to {Fe}^{3 +} + {OH}^{-} + {}^{•}{OH}

{Co}^{2 +} + {normalH}_{2} {normalO}_{2} \to {Co}^{3 +} + {OH}^{-} + {}^{•}{OH}

…”

Section: Resultsmentioning

confidence: 99%

Levofloxacin degradation in electro‐Fenton system with Fe@Co/GF composite cathode

Jia

Zhao

et al. 2023

J of Chemical Tech & Biotech

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“…At this stage, the anodes Co 0 and Fe 0 release electrons through electrochemical corrosion. 33,34 On this basis, the pores and specific surface area are increased, thus enhancing their adsorption. In addition, because of adsorption and PMS activation, the most significant degradation of TC was observed in the Co-Fe/ N@BC/PMS system (95.6%), whereas the adsorption and activation effects of BC 0 /PMS (67.1%) and Co-Fe/NC/PMS (85.9%) were significantly inferior.…”

Section: Tc Degradation By Different Systemsmentioning

confidence: 99%

More effective peroxymonosulfate activation for tetracycline removal by Co–FeN/@BC assisted by micro-electrolysis: performance and mechanism

Yu,

Li,

Guo

2024

Environ. Sci.: Water Res. Technol.

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“…Therefore, the limited pH range remains a key challenge for their practical application. It has been shown that combining Fe with other metals can broaden the pH range of catalysts during the reaction. , In a word, to make MOFs-derived metal/carbon composites better meet the needs of their practical application, a lot of improvements should be made to overcome these limitations.…”

Section: Environmental Application Of Mofs-derived Metal/carbon Compo...mentioning

confidence: 99%

Functional Metal/Carbon Composites Derived from Metal–Organic Frameworks: Insight into Structures, Properties, Performances, and Mechanisms

et al. 2023

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Metal−organic frameworks (MOFs) have extensively emerged as promising templates/precursors to prepare functional derivatives for various purposes because of their ultrahigh porosity, large specific surface area, and excellent user-configuration flexibility. Among these derivatives, MOFs-derived metal/carbon composites surmount the shortcomings of the individual components and produce synergistic effects, showing great potential in environmental remediation and energy storage and conversion. Herein, this work systematically discusses the synthetic strategies of MOFs-derived metal/carbon composites from the perspective of different MOF precursors, including pristine MOFs, heteroatom-doped MOFs, and MOFs composited with substrates. The unique advantages of MOFs-derived metal/carbon composites with exceptional stability, conductivity, and catalytic activity are then particularly summarized. On the basis of these advantages, their recent progress in the environment and energy fields is elaborated, with special emphasis on the elucidation of their mechanisms. Finally, the challenges and opportunities for future research are presented, which is expected to provide references for the design of multipurpose MOFs-derived metal/carbon composites.

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Co/Fe co-doped porous graphite carbon derived from metal organic framework for microelectrolysis-Fenton catalytic degradation of Rhodamine B

Cited by 20 publications

References 63 publications

Levofloxacin degradation in electro‐Fenton system with Fe@Co/GF composite cathode

Levofloxacin degradation in electro‐Fenton system with Fe@Co/GF composite cathode

More effective peroxymonosulfate activation for tetracycline removal by Co–FeN/@BC assisted by micro-electrolysis: performance and mechanism

Functional Metal/Carbon Composites Derived from Metal–Organic Frameworks: Insight into Structures, Properties, Performances, and Mechanisms

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