Heterogeneous Fenton-like surface properties of oxygenated graphitic carbon nitride

Oliveira, Wanessa Lima de; Ferreira, Meiriele Antunes; Mourão, Henrique A.J.L.; Pires, M. J. M.; Ferreira, Vinícius Moura; Gorgulho, Honória F.; Cipriano, Daniel F.; Freitas, Jair C. C.; Mastelaro, Valmor Roberto; Nascimento, Otaciro Rangel; Ferreira, Dalva E. C.; Fioravante, Frederico Ramos; Pereira, Márcio C.; Mesquita, João Paulo de

doi:10.1016/j.jcis.2020.12.031

Cited by 23 publications

(4 citation statements)

References 56 publications

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“…It entails the production of a large number of free radicals in order to degrade contaminants. To create •OH radicals, catalysts such as Cu(+2), Fe(+2), Fe(+3), metal foam-based and organic frameworks containing two metals(e.g., Co/Fe NC, Fe-Cu/MIL-101) can be utilized instead of solely Fe(+2) 62 . H2O2 can be replaced by reagents like persulfate (PS), peroxydisulfate (PDS) or peroxymonosulfate (PMS) to prevent the storage and transport loss of H2O2 in order to produce reactive oxygen species (ROS) 63 .…”

Section: Fenton-like Oxidationmentioning

confidence: 99%

Advanced Oxidation Processes and Their Application in the Treatment of Different Types of Wastewater Samples

Panghal,

Yousuf,

Sen

2024

BIO Web Conf.

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Over the years, urbanization has caused the quality of the water to decline gradually. The production of wastewater has been steadily rising alongside the growth of numerous businesses, including medicines, textiles, processed foods, and many more. Organic molecules from a variety of sources make up the majority of contaminants in wastewater. Some of these chemical molecules are not biodegradable, and it is challenging for anaerobic bacteria to break them down entirely. Because of the molecular structure of them, they can be quite persistent. Several advanced oxidation processes (AOPs) have been studied to remediate wastewater that contains trace organic chemicals (TrOCs). These include ozonation, Fenton oxidation, catalytic wet air oxidation, and photocatalytic oxidation. AOPs have excellent efficiencies, quick oxidation rates, and no secondary pollutants. Each AOP adheres to a particular mechanism in specific circumstances. In this article, we have comprehensively reviewed the underlying mechanism, and factors affecting oxidative pollutant degradation efficiency.

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Section: Fenton-like Oxidationmentioning

confidence: 99%

Advanced Oxidation Processes and Their Application in the Treatment of Different Types of Wastewater Samples

Panghal,

Yousuf,

Sen

2024

BIO Web Conf.

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“…Advanced oxidation technology associated with the sulfate radical (SO 4 ⋅ − ) is considered an effective means of combating organic pollution and has become a current research focus [7–9] . The sulfate radical (SO 4 ⋅ − ), produced by activation of peroxymonosulfate (PMS) and persulphate (PS), not only has a higher standard reduction potential, a wider pH value range than ⋅OH, but also has a longer half‐life, increasing the duration of contact with the target contaminants and resulting in a higher degree of mineralization of organic contaminants in water [10–13] .…”

Section: Introductionmentioning

confidence: 99%

“…Advanced oxidation technology associated with the sulfate radical (SO 4 *À ) is considered an effective means of combating organic pollution and has become a current research focus. [7][8][9] The sulfate radical (SO 4 *À ), produced by activation of peroxymonosulfate (PMS) and persulphate (PS), not only has a higher standard reduction potential, a wider pH value range than * OH, but also has a longer half-life, increasing the duration of contact with the target contaminants and resulting in a higher degree of mineralization of organic contaminants in water. [10][11][12][13] At present, PMS can be activated by many ways to produce SO 4 *À , including photoactivation, thermal activation, electrical activation, alkali activation, ultrasonic activation, transition metal ion activation, carbon material activation, etc.…”

Section: Introductionmentioning

confidence: 99%

Yolk‐shell Co₃O₄@Fe₃O₄/C Nanocomposites as a Heterogeneous Fenton‐like Catalyst for Organic Dye Removal

Yang

Peng

Ahmed

et al. 2023

Chemistry A European J

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The yolk-shell Co 3 O 4 @Fe 3 O 4 /C nanocomposites with Co 3 O 4 as the core, Fe 3 O 4 /C as the shell, and a cavity structure were synthesized by the hard template method. The physical and chemical properties of the composites were characterized by SEM, TEM, XRD, TGA, XPS, BET, and VSM. The specific surface area of yolk-shell Co 3 O 4 @Fe 3 O 4 /C nanocomposites is 175.9 m 2 g À 1 , showing superparamagnetic properties. The yolk-shell Co 3 O 4 @Fe 3 O 4 /C nanocomposites were used as heterogeneous Fenton catalysts to activate peroxymonosulfate (PMS) to degrade MB, which showed high catalytic degradation performance. The degradation rate of MB reached 100 % within 30 min under the circumstances of the yolk-shell Co 3 O 4 @Fe 3 O 4 /C nanocomposites dosage of 0.1 g L À 1 , the PMS dosage of 1.0 g L À 1 , the initial MB concentration of 100 mg L À 1 , an initial pH of 5.5, and a temperature of 30 � 2 °C. The enhanced catalytic performance of the yolk-shell Co 3 O 4 @Fe 3 O 4 /C nanocomposites can be attributed to the synergistic effect of the two catalytically active materials and the middle cavity. The effects of different operating parameters and co-existing anion species on MB degradation were also investigated. Electron paramagnetic resonance (EPR) analysis and quenching experiments confirmed that the formation of SO 4 *À in the yolk-shell Co 3 O 4 @Fe 3 O 4 /C/PMS system contributes to MB degradation. In addition, yolk-shell Co 3 O 4 @Fe 3 O 4 /C nanocomposites can be easily separated from the pollutant solution under the action of an external magnetic field, and the degradation rate of MB can still reach 98 % after five cycles, indicating that it has good stability and reusability and has broad application prospects in the field of water purification.

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“…Fe/C coupled materials have been considered to be effective catalysts for the heterogeneous Fenton reaction, and the synergistic effects between Fe and carbon species on Fe species dispersion, organic matter adsorption, H 2 O 2 activation and electron transfer have been studied widely [17][18][19][20][21]. Carbon materials, such as carbon nanotubes (CNTs), graphene oxide (GO) and activated carbon (AC), have been used to immobilize iron species within the surface and pores, which exhibited a distinctive reactivity of the Fenton-like reaction.…”

Section: Introductionmentioning

confidence: 99%

Spherical ZVI/Mn-C Bimetallic Catalysts for Efficient Fenton-like Reaction under Mild Conditions

Lü

Wang

et al. 2022

Catalysts

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The heterogeneous Fenton-like reaction has been receiving increasing attention for its inexpensiveness and high efficiency in water treatment. In this study, a novel strategy was proposed for preparing spherical ZVI/Mn-C bimetallic catalysts with a high activity for a Fenton-like reaction by using the ammonium alginate assisted sol–gel method coupled with a carbothermic reduction. The results showed that the obtained ZVI/Mn-C spheres had a uniform size, smooth surface and good sphericity, and the particle size of ZVI was limited to about 30 nm by the carbon layer. Among all catalysts, the ZVI/Mn-C-31 catalyst exhibited the highest phenol degradation efficiency in the Fenton-like process, and almost 100% phenol degradation efficiency was achieved under neutral pH at room temperature within 5 min. Moreover, the ZVI/Mn-C-31/H2O2 system showed a 100% degradation efficiency for removing a wide range of aromatic pollutants, including catechol, resorcinol and o-nitrophenol. Moreover, the radicals-scavenging experiment illustrated that the ·OH played a key factor in mineralizing the organic matters, and the ·O2− generated from the MnO-H2O2 system accelerated the conversion rate of ferric iron to ferrous iron. Due to the synergistic effects between ZVI and MnO, the ZVI/Mn-C-31 catalyst performed excellently in the Fenton-like reaction at an extended pH range.

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Heterogeneous Fenton-like surface properties of oxygenated graphitic carbon nitride

Cited by 23 publications

References 56 publications

Advanced Oxidation Processes and Their Application in the Treatment of Different Types of Wastewater Samples

Advanced Oxidation Processes and Their Application in the Treatment of Different Types of Wastewater Samples

Yolk‐shell Co₃O₄@Fe₃O₄/C Nanocomposites as a Heterogeneous Fenton‐like Catalyst for Organic Dye Removal

Spherical ZVI/Mn-C Bimetallic Catalysts for Efficient Fenton-like Reaction under Mild Conditions

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Heterogeneous Fenton-like surface properties of oxygenated graphitic carbon nitride

Cited by 23 publications

References 56 publications

Advanced Oxidation Processes and Their Application in the Treatment of Different Types of Wastewater Samples

Advanced Oxidation Processes and Their Application in the Treatment of Different Types of Wastewater Samples

Yolk‐shell Co3O4@Fe3O4/C Nanocomposites as a Heterogeneous Fenton‐like Catalyst for Organic Dye Removal

Spherical ZVI/Mn-C Bimetallic Catalysts for Efficient Fenton-like Reaction under Mild Conditions

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Yolk‐shell Co₃O₄@Fe₃O₄/C Nanocomposites as a Heterogeneous Fenton‐like Catalyst for Organic Dye Removal