Preparation and catalytic performance of CuFe2O4 nanoparticles supported on reduced graphene oxide (CuFe2O4/rGO) for phenol degradation

Othman, Israa; Haija, Mohammad Abu; Ismail, Issam; Zain, Jerina Hisham; Banat, Fawzi

doi:10.1016/j.matchemphys.2019.121931

Cited by 69 publications

(36 citation statements)

References 47 publications

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“…The schematic illustration of humidity sensing setup is shown in Figure 2. matched with spinel cubic structure of JCPDS card number 74-2400 and the CuO impurity peaks observed at 38.87°and 48.96°(JCPDS 80-1268) [7,8]. The lattice parameter is found to increase with increase in Eu 3+ concentration due to difference in ionic radius.…”

Section: Characterizationssupporting

confidence: 63%

Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Sathisha¹,

Manjunatha²,

Angadi³

et al. 2020

Mineralogy - Significance and Applications [Working Title]

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The CuFe (2Àx) Eu x O 4 (where x = 0.00, 0.01, 0.02, 0.03) nanoparticles are synthesized by solution combustion method. The influence of Eu 3+ on the structural, morphological, dielectrical, and humidity sensing study is recorded. The XRD pattern peaks of the as-prepared CuFe (2Àx) Eu x O 4 (where x = 0.00, 0.01, 0.02, 0.03) nanoparticle confirm the polycrystalline spinel cubic structure with a small amount of CuO impurity phase at 38.87°and 48.96°. Surface morphology of the samples was studied by scanning electron microscope (SEM) images of the nanoparticles, and their respective average grain size was estimated using Image software. Chemical composition of all prepared samples was analyzed by EDS spectra. The dielectric parameters of AC conductivity, electric modulus, and impedance of the samples were measured over a range of frequencies from 0.1 KHz to 1 MHz at room temperature. Europium-doped copper ferrite samples showed good humidity sensing response, response and recover times, and stability over a %RH range of 11-91%. These types of samples are very useful for sensor application, battery applications, electronic applications, and automotive applications.

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Section: Characterizationssupporting

confidence: 63%

Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Sathisha¹,

Manjunatha²,

Angadi³

et al. 2020

Mineralogy - Significance and Applications [Working Title]

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“…Consequently, these leached metal ions behave as homogeneous catalysts and directly degrade parabens in bulk solution through nonradical mechanisms. 122 Also, hydronium ion (H 3 O + ) is the dominant reactive species in the acidic condition, which is known to develop hydrogen linkages with residual −OH and −COOH groups present at the edges of rGO. 122 These two supportive interactions of CuFe 2 O 4 /rGO are responsible for producing a negligible impact of pH variation (Figure 5d).…”

Section: Catalysts For Persulfate Activationmentioning

confidence: 99%

Overview of Catalytic Removal of Parabens from Water and Wastewater

et al. 2022

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The increased consumption of parabens and associated health hazards has necessitated the development of water treatment technologies capable of removing parabens to desired levels. Among the various available treatment options, catalytic degradation has the advantages of faster reaction kinetics, increased reactive species formation, and no sludge disposal problem. Accordingly, an overview of recent advances in catalytic systems briefing removal, mineralization, and performance comparison between catalysts is essential to scale up and transfer lab-scale results to real-scale applications. The current review highlights the superiority of photocatalysis, Fenton’s, persulfate, and ozonation/catalytic ozonation systems to eliminate parabens. The performance evaluation and economic feasibility of catalytic treatment systems were identified using mathematical models. Additionally, density functional theory calculations were carried out to assess the fundamental mechanism associated with paraben degradation by TiO2 and to develop a molecular-level understanding of synthesizing catalysts that can effectively degrade parabens. In a nutshell, this review acts as a roadmap to show the feasibility of catalytic treatment technologies to eliminate parabens from the water environment.

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“…POMs can be used in both homogeneous and heterogeneous reactions, and even as phasetransfer catalysts [15]. Owing to the solubility of POMs in aqueous solution, the exploration of solid POM nanomaterials has been a great challenge [16].…”

Section: Introductionmentioning

confidence: 99%

Fast degradation of phenol over porphyrin-polyoxometalate composite photocatalysts under visible light

Xia¹,

Wang²,

Zhang³

et al. 2022

Polyoxometalates

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Both polyoxometalates (POMs) and metalloporphyrins exhibit high Arial. 9 efficiency. In this work, we designed two new composite catalysts with [5,10,15,20-tetra-(4carboxylphenyl)-porphyrinato]-ferric chloride (FeTCPP) and H 3 PW 12 O 40 (PW 12 )/H 3 PMo 12 O 40 (PMo 12 ), forming FeTCPP-PW 12 and FeTCPP-PMo 12 composite catalysts. The diameter of the catalyst particles was controlled by varying the dosage of the two reactants. The synthesis method of the catalysts is simple to operate and it can be obtained by ordinary precipitation after dissolution. Furthermore, the catalysts exhibited satisfactory activity and stability under the condition of repetitive tests. Our findings showed that phenol was almost completely degraded in 10 min under photocatalytic conditions catalyzed by the FeTCPP-PMo 12 photocatalyst. This work provides new concepts for developing new types of materials for environmental applications.

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Preparation and catalytic performance of CuFe2O4 nanoparticles supported on reduced graphene oxide (CuFe2O4/rGO) for phenol degradation

Cited by 69 publications

References 47 publications

Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Overview of Catalytic Removal of Parabens from Water and Wastewater

Fast degradation of phenol over porphyrin-polyoxometalate composite photocatalysts under visible light

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Preparation and catalytic performance of CuFe2O4 nanoparticles supported on reduced graphene oxide (CuFe2O4/rGO) for phenol degradation

Cited by 69 publications

References 47 publications

Enhanced Humidity Sensing Response in Eu3+-Doped Iron-Rich CuFe2O4: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Enhanced Humidity Sensing Response in Eu3+-Doped Iron-Rich CuFe2O4: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Overview of Catalytic Removal of Parabens from Water and Wastewater

Fast degradation of phenol over porphyrin-polyoxometalate composite photocatalysts under visible light

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Product

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Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties