Fabrication of nickel-iron layered double hydroxides using nickel plating wastewater via electrocoagulation, and its use for efficient dye removal

Ou, Jinhua; Yan, Jiaojiao; Xu, Tao; Jiang, Zhongshan; Tan, Hong; He, Saiyu; Hu, Bonian; Yu, Gang

doi:10.1016/j.molliq.2021.116246

Cited by 17 publications

(5 citation statements)

References 65 publications

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“…The peaks at 711, 532, 284, and 400 eV ascribed to Fe2p, O1s, C1s, and N1s, respectively, confirm the composition of the catalyst. 37,[45][46][47] For Fe 3 O 4 @NC, the Fe 2p XPS peak could be deconvoluted into two broad peaks centered at 710.6 and 724.4 eV, corresponding to Fe 2p 3/2 and Fe 2p 1/2 , respectively, which is consistent with the crystal structure of Fe 3 O 4 . 22 The Fe 2p 3/2 peak of could be further resolved into two different peaks at 710.4 and 712.7 eV, which were attributed to Fe 3+ and Fe 2+ ions, respectively.…”

Section: Structure and Morphology Of Fe 3 O 4 @Ncsupporting

confidence: 68%

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Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Luo

Tan

et al. 2022

New J. Chem.

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Section: Structure and Morphology Of Fe 3 O 4 @Ncsupporting

confidence: 68%

“…In 2018, we prepared a novel Ni-Fe layered double hydroxides using flocculates via a regulated EC process. 37 The method is low-cost and eco-friendly, and it uses nickel-containing wastewater as the raw material. However, it requires the monitoring and regulation of pH throughout the process.…”

Section: Introductionmentioning

confidence: 99%

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Luo

Tan

et al. 2022

New J. Chem.

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“…In the vertical view, a layer of metal atoms is sandwiched by two layers of oxygen atoms, forming a typical “sandwich” structure. Figure 1 D shows the typical crystal structure of LDHs, with metal cations occupying the center of the octahedron and the vertices containing hydroxide shared ions to form 2D layers ( Ou et al., 2021 ). Moreover, charge-balancing anion or solvation molecules (CO 3 2− , Cl − , and SO 4 2− ) are located in the gap of the hydrated interlayer.…”

Section: Basics Of 2d Metal Oxidesmentioning

confidence: 99%

Recent advances in the fabrication of 2D metal oxides

et al. 2022

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Summary Atomically thin two-dimensional (2D) metal oxides exhibit unique optical, electrical, magnetic, and chemical properties, rendering them a bright application prospect in high-performance smart devices. Given the large variety of both layered and non-layered 2D metal oxides, the controllable synthesis is the critical prerequisite for enabling the exploration of their great potentials. In this review, recent progress in the synthesis of 2D metal oxides is summarized and categorized. Particularly, a brief overview of categories and crystal structures of 2D metal oxides is firstly introduced, followed by a critical discussion of various synthesis methods regarding the growth mechanisms, advantages, and limitations. Finally, the existing challenges are presented to provide possible future research directions regarding the synthesis of 2D metal oxides. This work can provide useful guidance on developing innovative approaches for producing both 2D layered and non-layered nanostructures and assist with the acceleration of the research of 2D metal oxides.

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“…In the recent past, various research strategies/technologies have been adopted for the remediation of industrial wastewater and dye-contaminated water bodies, including plasma-based advanced oxidation process [6], ozonation [7], membrane filtration [8], bioelectrochemical system [9], heterogeneous Fenton catalysts [10], ion exchange removal [11], adsorption, and electrocoagulation [12]. Among these, the photocatalysis process mediated by metal oxide semiconductors is an environmentally safe process that simulates the natural photosynthesis process to speed up the chemical reactions requiring light [13].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methyl Green Dye Mediated by Pure and Mn-Doped Zinc Oxide Nanoparticles under Solar Light Irradiation

Akram

Fatima

Almohaimeed

et al. 2023

Adsorption Science & Technology

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Herein this study, pure and manganese- (Mn-) doped ZnO (2 wt. %) nanoparticles have been synthesized using the chemical precipitation method and characterized for the photodegradation of methyl green (MG) pollutant dye under natural sunlight. The structural analysis via XRD patterns has revealed that both intrinsic and Mn-doped ZnO (2 wt. %) samples have hexagonal wurtzite structures with appropriate phase purity, clearly indicating the absence of any external impurity. The incorporation of Mn in the host ZnO lattice has decreased the crystallite size (21.10 → 18.76 nm), and nanoparticle-type surface features with sizes in the 50–100 nm range have been observed through FESEM-based surface morphological studies. Both aforementioned observations have merit in providing more active area and a high surface area to volume ratio for photocatalytic reaction. The investigation of photophysical properties indicates that in Mn-doped ZnO nanoparticles, the absorption peak is blue-shifted by 5 nm (365 → 360 nm), due to the widening of the bandgap. The degradation kinetics of MG dye follow the pseudo-second-order kinetics, and the degradation efficiency has been observed to be 62.78% mediated by pure ZnO and 66.44% by Mn-doped ZnO (2 wt. %) photocatalyst under 60 minutes of sunlight irradiation. Specifically, the rate of photocatalytic reaction (K) ~0.01792 min-1 and R 2 ~0.97992 has been achieved for pure ZnO, whereas slightly higher (K) ~0.02072 min-1 and R 2 ~0.97299 have been observed for Mn-doped ZnO, respectively. Conclusively, the synergistic interactions with multiple charge transfer pathways, improvement of e−/h+ pair charge separation, improved surface area, and efficient generation of hydroxyl radicals are supposed to be responsible for the highly efficient photocatalytic activity of the Mn–doped ZnO photocatalyst for MG dye.

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Fabrication of nickel-iron layered double hydroxides using nickel plating wastewater via electrocoagulation, and its use for efficient dye removal

Cited by 17 publications

References 65 publications

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Recent advances in the fabrication of 2D metal oxides

Photocatalytic Degradation of Methyl Green Dye Mediated by Pure and Mn-Doped Zinc Oxide Nanoparticles under Solar Light Irradiation

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Fabrication of nickel-iron layered double hydroxides using nickel plating wastewater via electrocoagulation, and its use for efficient dye removal

Cited by 17 publications

References 65 publications

Fe3O4@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Fe3O4@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Recent advances in the fabrication of 2D metal oxides

Photocatalytic Degradation of Methyl Green Dye Mediated by Pure and Mn-Doped Zinc Oxide Nanoparticles under Solar Light Irradiation

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Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

Fe₃O₄@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue