In situ etched graphite felt modified with CuFe2O4/Cu2O/Cu catalyst derived from CuFe PBA for the efficient removal of sulfamethoxazole through a heterogeneous electro-Fenton process

Qi, Haiqiang; Shi, Xuelin; Liu, Zhibin; Yan, Zihao; Sun, Zhirong

doi:10.1016/j.apcatb.2023.122722

Cited by 44 publications

(6 citation statements)

References 57 publications

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“…The C 1s core level spectrum (Figure S8d) indicates three species at 383.4 (C–C), 284.4 (C–N), and 285.4 eV (C–O). Figure S8e shows that O 1s peaks observed at 531.0 and 533.1 eV are assigned to hydroxyl oxygen and adsorbed water molecules, respectively. , Notably, the mixed valence states of Cu and Fe elements in CuFe-PBA improve the reaction kinetics. The SCs performance of the CuFe-PBA was measured in 1 M Na 2 SO 4 electrolyte.…”

mentioning

confidence: 97%

Ultrastable 1T-2H WS₂ Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

Shinde,

Chodankar,

Kim

et al. 2023

ACS Energy Lett.

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Tungsten disulfide (WS2) has recently emerged as a nontrivial material for electrochemical applications; however, boundaries associated with its 1T and 2H phases limit its performance. Here, this issue is addressed by evolving a dual-phase 1T-2H WS2 heterostructure that combines two different phases directly on the current collector. The resulting material demonstrated a 2D transformable phase structure, large interlayer distance, and highly exposed edge-active sites. Theoretical calculations confirmed that the 1T WS2 formed after phosphorus doping exhibits a semimetallic feature, elucidating a high electronic conductivity. The edge-enriched metallic phase and interlayer engineering of the 1T-2H WS2 heterostructure validate exceptional Na+ ion intercalation. The hybrid supercapacitor cell assembled with the 1T-2H WS2 anode and Prussian blue analogue (PBA) cathode shows a specific energy of 65.5 Wh kg–1 at 784 W kg–1, and 95.7% cycling stability. This work paves a technique for phase transition and sheds light on the expansion of efficient energy storage devices.

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mentioning

confidence: 97%

Ultrastable 1T-2H WS₂ Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

Shinde,

Chodankar,

Kim

et al. 2023

ACS Energy Lett.

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“…Regions with higher positive values are more likely to be the active sites for species’ attack. Analyzing the electron density isosurface plots for f – , f + , and f 0 on SMX’s surface, it is evident that the benzene amine group in SMX was more reactive than the thiazole ring and sulfonamide group . Moreover, the pronounced blue region adjacent to the C–S bond suggests its heightened susceptibility to electrophilic, nucleophilic, and radical reactions.…”

Section: Resultsmentioning

confidence: 99%

“…Analyzing the electron density isosurface plots for f − , f + , and f 0 on SMX's surface, it is evident that the benzene amine group in SMX was more reactive than the thiazole ring and sulfonamide group. 50 Moreover, the pronounced blue region adjacent to the C−S bond suggests its heightened susceptibility to electrophilic, nucleophilic, and radical reactions. While the isosurface mapping of electron density offered a visual understanding, it did not facilitate a detailed quantitative analysis of the Fukui function values.…”

Section: Species and Contribution Of Active Species In The Fe(vi)−h 2...mentioning

confidence: 99%

pH-Driven Efficacy of the Ferrate(VI)–Peracetic Acid System in Swift Sulfonamide Antibiotic Degradation: A Deep Dive into Active Species Evolution and Mechanistic Insights

Chen,

Bai,

Sun

et al. 2023

Environ. Sci. Technol.

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In the realm of wastewater treatment, the power of ferrate (Fe(VI)) and peracetic acid (PAA) as oxidants stands out. But their combined might is where the enhancement truly lies. Their collaborative effect intensifies, but the underlying mechanics, especially across varying pH levels and pollutant types, still lurks in obscurity.Our study delved into the sophisticated oxidation interplay among Fe(VI)−PAA, Fe(VI)−H 2 O 2 , and standalone Fe(VI) systems. Notably, at a pH of 9.0, boasting a kinetic constant of ∼0.127 M −1 • s −1 , the Fe(VI)−PAA system annihilated the pollutant sulfamethoxazole, outpacing its counterparts by a staggering 48.73-fold when compared to the Fe(VI)−H 2 O 2 system and 105.58-fold when using Fe(VI) individually. The behavior of active species�such as the dynamic •OH radicals and high-valent iron species (Fe(IV)/ Fe(V))�shifted with pH variations, leading to distinct degradation pathways. Our detailed exploration pinpoints the behaviors of certain species across pH levels from 3.0 to 9.0. In more acidic environments, the •OH species proved indispensable for the system's reactivity. Conversely, as the pH inclined, degradation was increasingly steered by high-valent iron species. This intensive probe demystifies Fe(VI) interactions, deepening our understanding of the capabilities of the Fe(VI)-centered system and guiding us toward cleaner water solutions. Importantly, pH value, often underappreciated, holds the reins in organic wastewater decontamination. Embracing this key player is vital as we strategize for more expansive systems in upcoming ventures.

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“…Figure 3c shows the characteristic peaks of Fe 0 , Fe3O4, FeO, Cu 0 , and CuO. The peaks at 2θ = 44.7° and 65.1° were attributed to Fe 0 [42], and those at 30.1°, 35.4°, 53.4°, and 57.0° were attributed to magnetite Fe3O4 [44]. The peaks at 43.3°, 50.4°, and 74.1° were attributed to Cu 0 , and those at 35.9° were attributed to FeO [45].…”

Section: Xrd Analysismentioning

confidence: 99%

“…When the DO concentration increased to 1.75 mg/L, the removal efficiency of HA reached its highest (98.2%), a phenomenon ascribable to the increasing contact between HA and the FeCu@BC catalyst under the aeration condition. However, the HA removal efficiency decreased slightly (95.3%) at a DO concentration of 2.01 mg/L, mainly due to the large number of bubbles from excessive aeration which increased the mass transfer resistance of the reaction solution [44]. In actual water treatment, the suitable DO concentration (around 1.75 mg/L) in the secondary effluent could not only save energy, but also facilitate the removal of HA.…”

Section: Effect Of Do Concentration On Ha Removalmentioning

confidence: 99%

Enhanced Removal of Dissolved Effluent Organic Matter in Wastewater Using Lignin-Based Biochar Supported Fe–Cu Bimetallic Oxide Catalyst

Wang,

Kong,

et al. 2024

JMSE

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The effluent discharged from wastewater treatment facilities frequently enters the ocean, posing a considerable threat to the health of marine life and humans. In this paper, an alkali lignin-based biochar-loaded modified Fe–Cu catalyst (FeCu@BC) was prepared to remove soluble microbial products (SMP) from secondary effluent as disinfection by-products precursors at ambient temperature and pressure. The humic acid (HA) was taken as the representative substance of SMP. The results showed that the maximum removal efficiency of HA reached 93.2% when the FeCu@BC dosage, pH, initial HA concentration, and dissolved oxygen concentration were 5.0 g/L, 7, 100 mg/L, and 1.75 mg/L, respectively. After three cycles, the removal efficiency of HA could be maintained at more than 70%. The quenching experiments and electron spin resonance (EPR) results showed that •OH and 1O2 were involved in the degradation of HA in the FeCu@BC catalyst reaction system, with 1O2 playing a dominant role. Theoretical calculations confirmed that •OH and 1O2 were more prone to attack the C=O bond of the side chain of HA. After processing by the FeCu@BC catalyst, the yield of chlorinated disinfection by-products from secondary effluent had decreased in an obvious manner. This study provides a new solution to efficiently solve the problem of chlorinated disinfection by-products from HA.

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In situ etched graphite felt modified with CuFe2O4/Cu2O/Cu catalyst derived from CuFe PBA for the efficient removal of sulfamethoxazole through a heterogeneous electro-Fenton process

Cited by 44 publications

References 57 publications

Ultrastable 1T-2H WS₂ Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

Ultrastable 1T-2H WS₂ Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

pH-Driven Efficacy of the Ferrate(VI)–Peracetic Acid System in Swift Sulfonamide Antibiotic Degradation: A Deep Dive into Active Species Evolution and Mechanistic Insights

Enhanced Removal of Dissolved Effluent Organic Matter in Wastewater Using Lignin-Based Biochar Supported Fe–Cu Bimetallic Oxide Catalyst

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In situ etched graphite felt modified with CuFe2O4/Cu2O/Cu catalyst derived from CuFe PBA for the efficient removal of sulfamethoxazole through a heterogeneous electro-Fenton process

Cited by 44 publications

References 57 publications

Ultrastable 1T-2H WS2 Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

Ultrastable 1T-2H WS2 Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

pH-Driven Efficacy of the Ferrate(VI)–Peracetic Acid System in Swift Sulfonamide Antibiotic Degradation: A Deep Dive into Active Species Evolution and Mechanistic Insights

Enhanced Removal of Dissolved Effluent Organic Matter in Wastewater Using Lignin-Based Biochar Supported Fe–Cu Bimetallic Oxide Catalyst

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Ultrastable 1T-2H WS₂ Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors

Ultrastable 1T-2H WS₂ Heterostructures by Nanoarchitectonics of Phosphorus-Triggered Phase Transition for Hybrid Supercapacitors