Heterogeneous activation of peroxymonosulfate by bimetallic MOFs for efficient degradation of phenanthrene: Synthesis, performance, kinetics, and mechanisms

Li, Huanxuan; Yao, Yuzhe; Chen, Jiale; Wang, Chunhui; Huang, Jingang; Du, Jia; Xu, Shaodan; Tang, Junhong; Zhao, Hongting; Huang, Mingzhi

doi:10.1016/j.seppur.2020.118217

Cited by 67 publications

(25 citation statements)

References 53 publications

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“…Bimetallic metal–organic frameworks (FeCu-MOFs) were synthesized through a solvothermal process referred to in our previous studies [ 27 , 28 ]. Briefly, 0.596 g (3.0 mM) of FeCl 2 ·4H 2 O, 0.725 (3.0 mM) g of Cu(NO 3 ) 2 ·3H 2 O, and 0.594 (3.0 mM) of DHTA were dissolved in the mixed solutions of N,N’-dimethylformamide (DMF, 30 mL) and ethanol (EtOH, 30 mL) by magnetic stirring.…”

Section: Methodsmentioning

confidence: 99%

“…It has been demonstrated that the introduction of another metal ion into MOFs could significantly enhance the catalytic performance [ 26 ]. Bimetallic FeCo-MOFs and CuCo-MOFs were synthesized and evaluated as catalysts of PMS for removal of organic pollutants in our previous studies [ 12 , 27 , 28 ]. It is well known that the structure, properties, and catalytic performance of MOFs are significantly influenced by different metal ions.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Bimetallic FeCu-MOF and Its Performance as Catalyst of Peroxymonosulfate for Degradation of Methylene Blue

et al. 2022

Materials

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Bimetallic MOFs have recently emerged as promising materials for wastewater treatment based on advanced oxidation processes. Herein, a new bimetallic MOF (FeCu-MOF) was fabricated by hydrothermal process. The structural, morphological, compositional and physicochemical properties of the as-synthesized bimetallic FeCu-MOF were characterized by XRD, FT-IR, SEM, TEM, BET, and XPS. TEM and XPS confirmed the homogeneous distribution of CuO2 nanoparticles in the as-synthesized materials. The result of wastewater treatment indicated that 100% of MB was removed by 6.0 mM PMS activated with 0.6 g/L of FeCu-MOF in 30 min. The high catalytic performance of FeCu-MOF was probably due to the accelerated electron and mass transfer resulting from the existence of a homogeneous distribution of unsaturated metal sites and an abundant mesoporous structure. The obtained results from the competitive quenching tests demonstrated that sulfate radicals (SO4•−) were the major species responsible for MB oxidation. In addition, hydroxyl (·OH) and singlet oxygen (1O2) also had a nonnegligible role in the MB removal. Interestingly, the addition of acetate ion (CHCOO−) promoted the removal of MB while other anions (including NO2−, H2PO4−, SO42−, HPO42−, and HCO3−) inhibited the MB removal. Furthermore, a possible mechanism based on both heterogeneous and homogeneous activation of PMS was proposed, along with the MB degradation mechanism.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Bimetallic FeCu-MOF and Its Performance as Catalyst of Peroxymonosulfate for Degradation of Methylene Blue

et al. 2022

Materials

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“…In many cases, MOF for Fenton-like processes enhanced their activity by incorporating additional active sites [127]. Accordingly, multi-metallic with high redox-active metal centers was able to activate PMS in order to achieve 100% degradation of phenanthrene (PHE) [165]. The coexistence of non-radical and radical species was due to the interaction of PMS and FeCo-MOF-74.…”

Section: Redox-active Guestsmentioning

confidence: 99%

Redox-active metal-organic frameworks for the removal of contaminants of emerging concern

Ezugwu

Sonawane

Rosal

2022

Separation and Purification Technology

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The pollution due to the presence of contaminants of emerging concern (CECs) is a major cause for concern because of the serious threat it supposes to human health and ecosystem functions. Many efforts have been geared toward their removal to guarantee safer freshwater.Metal-organic frameworks (MOFs) are crystalline hybrid materials with high surface area and flexible rational design, which allows the incorporation of different active sites into a particular framework, thereby emerging as a potentially excellent candidate for water and wastewater treatment. Benefiting from the unique redox-active properties of MOFs, this review surveys literature update on their application for the removal of CECs. The underlaying electron transfer mechanism and strategies for incorporating redox-active sites into MOFs are comprehensively discussed. Different components of MOFs that are redoxactive are further highlighted. This study elaborates the application of MOFs for Fenton-type and other advanced oxidation processes (AOPs) for removing emerging contaminants. AOPs generate highly reactive strong oxidants like hydroxyl and sulfate radicals that are efficient for degrading emerging pollutants with high mineralization rates. MOFs display semiconductor-like properties. Their photocatalytic use for the removal of dissolved emerging pollutants is detailed in the discussion. This review also provides an overview of the most promising directions for future research.

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“…The catalysis capability of ZIF-67 surpasses the conventional Co 3 O 4 nanoparticles owing to their large specific surface area and excellent porosity . Li et al synthesized a bimetallic MOF (FeCo-MOF) based on the organic linker DHTA to degrade phenanthrene, and the degradation rate is as high as 100% . Co-based MOF materials endow a vigorous reciprocity with superficial Co(II) quantity, also facilitate the circulation ability of Co(III)/Co(II), and have been commonly used in catalysis and adsorption .…”

Section: Introductionmentioning

confidence: 99%

“…16 Li et al synthesized a bimetallic MOF (FeCo-MOF) based on the organic linker DHTA to degrade phenanthrene, and the degradation rate is as high as 100%. 17 Co-based MOF materials endow a vigorous reciprocity with superficial Co(II) quantity, also facilitate the circulation ability of Co(III)/Co(II), and have been commonly used in catalysis and adsorption. 18 Thus, it is essential to design a Co-based framework with multiple active metal sites on the surface to degrade the pollutants in water environment remediation.…”

Section: ■ Introductionmentioning

confidence: 99%

Activation of Peroxymonosulfate by Co-Metal–Organic Frameworks as Catalysts for Degradation of Organic Pollutants

Mao

Wang

et al. 2021

Ind. Eng. Chem. Res.

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Two novel Co-based metal−organic frameworks, namely, [ C o 3,5biphenyltricarboxylic acid, 4,4′-tmdp = 4,4-trimethylenedipyridine, and 1,4-bimb = 1,4-bis((1H-imidazol-1-yl)methyl)benzene), were synthesized under hydrothermal conditions and characterized. In this study, by adjusting several experimental parameters including catalyst dosage, PMS volume, temperature, and the initial value of pH, PMS activation toward two cationic dyes and two anionic dye degradations was systematically examined. Radical scavenging experiments revealed that SO 4•− is considered to act as the paramount reactive oxygen species in the oxidation process. The Co(III)/Co(II) recycle of CUST-560 and CUST-561 is able to carry out an effective electronic transfer to PMS, facilitating the reaction process; thus, an eminent catalytic property has emerged. Consequently, the original material as-synthesized is thought to be a splendid activator to peroxymonosulfate activation for extermination and decolorization of dyes.

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Heterogeneous activation of peroxymonosulfate by bimetallic MOFs for efficient degradation of phenanthrene: Synthesis, performance, kinetics, and mechanisms

Cited by 67 publications

References 53 publications

Synthesis of Bimetallic FeCu-MOF and Its Performance as Catalyst of Peroxymonosulfate for Degradation of Methylene Blue

Synthesis of Bimetallic FeCu-MOF and Its Performance as Catalyst of Peroxymonosulfate for Degradation of Methylene Blue

Redox-active metal-organic frameworks for the removal of contaminants of emerging concern

Activation of Peroxymonosulfate by Co-Metal–Organic Frameworks as Catalysts for Degradation of Organic Pollutants

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