Colloidal core-shell metal, metal oxide nanocrystals, and their applications

López, Ignacio F.; Garza‐Tovar, Lorena L.; Adesuji, Elijah T.; Sánchez-Domínguez, Margarita

doi:10.1016/b978-0-12-813357-6.00007-3

Cited by 6 publications

(2 citation statements)

References 251 publications

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“…Furthermore, new weak bands at 530 and 431 cm À1 are assigned to V N and V O bands. [23,31,34,35] Accordingly, CHN analysis determined the elemental composition of the assynthesized salophen, which was in fair agreement with the theoretical calculations.…”

Section: Characterization Of Salophen Ligand and Corresponding Oxovan...supporting

confidence: 78%

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe₃O₄ nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Bagherzadeh

Navi

Bayrami

et al. 2022

Applied Organom Chemis

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The current study introduces an approach toward the development of heterogeneous, magnetically recoverable oxovanadium(IV)‐salophen complex to employ in the selective oxidation of sulfides using H2O2 as oxidant. A salophen ligand containing hydroxyl functional group was synthesized, which is conducive to successful, covalent immobilization of metal complex onto the silica‐modified Fe3O4 magnetic nanoparticles (SMNPs). This type of metal anchoring is achieved through an intermolecular condensation reaction. The in‐depth investigation on the catalyst (Fe3O4@SiO2@VO(salophen)) productivity and lifetime in the oxidation of a wide range of linear and aromatic sulfides is well represented and discussed. The use of the current catalyst in the selective oxidation of prototype substrate (methyl phenyl sulfide) resulted in an appreciable increase in the selectivity toward the desired sulfoxide (92%) and conversion rate (95%) compared with similar studies, reported to this day. Analytical techniques such as field emission scanning electron micrograph (FE‐SEM), energy‐dispersive X‐ray spectroscopy (EDX), Fourier transform infrared (FT‐IR), X‐ray diffraction (XRD) analysis, and inductively coupled plasma optical emission spectrometer (ICP‐OES) provided data on structural/compositional characterization of materials in catalyst preparation steps.

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Section: Characterization Of Salophen Ligand and Corresponding Oxovan...supporting

confidence: 78%

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe₃O₄ nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Bagherzadeh

Navi

Bayrami

et al. 2022

Applied Organom Chemis

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“…30,31 In addition, nanocomposites metal oxides with core-shell structures have large specific surface areas showing enhanced photocatalytic performance. 32 The uses of nanocomposite photocatalysts in the powder form has some practical difficulties to separate and reuse the powder from the reaction solution after photolysis process because of their smaller particle size. 29 To solve these practical problems, great interest has been dedicated to the utilization of the use of photocatalysts as thin films.…”

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confidence: 99%

Engineering of NiO/ZnO Core-Shell Nanostructure via Facile Chemical Processes for Environmental Application

Gomaa¹,

Sayed²,

Boshta³

2023

ECS J. Solid State Sci. Technol.

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NiO/ZnO core-shell nanoflake structures were successfully fabricated using a unique strategy consisting of a simple chemical bath deposition route followed by a metal-organic chemical vapor deposition technique with different growth times. The X-ray diffraction results combined with Raman measurements and X-ray photoelectron spectroscopy confirmed that the surface property and photocatalytic activity of NiO/ZnO core-shell nanostructures affected by varying the growth time of ZnO on the surface of NiO nanoflakes. The scanning electron microscopy images showed that the NiO/ZnO samples have a porous core-shell architecture with high surface area and abundant open sites, resulting in enhanced photocatalytic activity. The photocatalytic activity was tested for the prepared samples by measuring the degradation of crystal violet (CV) dye under ultraviolet irradiation. NiO/ZnO core-shell nanostructures deposited at 30 min exhibits higher photodegradation efficiency toward CV dye compared to NiO/ZnO core-shell deposited at 60 min and NiO nanoflakes standing alone. The enhanced photocatalytic activity is due to the formation of p–n heterojunction between ZnO and NiO with a high specific area and more active site of core-shell nanoflakes architecture. The obtained results in this research suggest a new strategy for the fabrication of highly efficient photocatalytic activity semiconducting metal oxide with core-shell.

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Facile and clean separation of Pb(II) from soil and recycling by pH-triggered microbial technology

Chen

Huang

et al. 2021

Chemical Engineering Journal

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Colloidal core-shell metal, metal oxide nanocrystals, and their applications

Cited by 6 publications

References 251 publications

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe₃O₄ nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe₃O₄ nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Engineering of NiO/ZnO Core-Shell Nanostructure via Facile Chemical Processes for Environmental Application

Facile and clean separation of Pb(II) from soil and recycling by pH-triggered microbial technology

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Colloidal core-shell metal, metal oxide nanocrystals, and their applications

Cited by 6 publications

References 251 publications

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe3O4 nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe3O4 nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Engineering of NiO/ZnO Core-Shell Nanostructure via Facile Chemical Processes for Environmental Application

Facile and clean separation of Pb(II) from soil and recycling by pH-triggered microbial technology

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Product

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Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe₃O₄ nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides

Oxovanadium(IV)‐salophen covalently immobilized on silica‐coated Fe₃O₄ nanoparticles: A magnetically recoverable nanocatalyst for the selective oxidation of sulfides