Novel method for synthesis of Fe 3 O 4 @TiO 2 core/shell nanoparticles

Khashan, Saud; Dagher, Sawsan; Tit, Nacir; Alazzam, Anas; Kim, Hee-Je

doi:10.1016/j.surfcoat.2017.05.045

Cited by 110 publications

(46 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The capability of SiO 2 to prevent the Fe 3 O 4 aggregation could also explain the reduction in Fe 3 O 4 magnetic features . A further decrease in magnetic properties for Fe 3 O 4 ‐SiO 2 ‐Cu‐PST was significantly expected as the presence of organic coating (Cu‐PST) on the Fe 3 O 4 ‐SiO 2 as a non‐magnetic layer could reduce dramatically the magnetization behavior compared with that behavior for Fe 3 O 4 or Fe 3 O 4 ‐SiO 2 …”

Section: Resultsmentioning

confidence: 99%

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Al-Hussein

Adam

2020

Applied Organom Chemis

View full text Add to dashboard Cite

N‐Salicylidene amino acid Schiff base sodium sulfonate salt, as a tridentate dibasic chelating ligand, was obtained from the common condensation of salicylaldehyde‐5‐sodium sulfonate with tyrosine (HPST). The internal formed ligand coordinated to Cu2+ ion in an aqueous media affording new Cu (II)‐complex (Cu‐PST), which characterized by various physico‐chemicals spectral tools. The mononuclear complex was evaluated as a homogeneous and heterogeneous catalyst in the (ep)oxidation protocols of 1,2‐cyclooctene and benzyl alcohol. Heterogeneously, Cu‐PST was immobilized on Fe3O4‐SiO2, as nanoparticles. The heterogeneous catalyst was characterized by infrared, X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, energy‐dispersive spectroscopy, Brunauer−Emmett−Teller and magnetism. Homogeneously, the temperature, solvent and oxidant influences were examined in the catalytic reactions to realize the best reaction conditions. Cu‐catalyst exhibited better catalytic performance in the (ep)oxidation processes homogeneously than that in the heterogeneous phase at 80°C for 2 hr in acetonitrile. Reusability of the homogeneous catalyst was for a maximum of three times in the (ep)oxidation reaction, whereas the heterogeneous catalyst was active for six times. A mechanistic pathway was proposed for both catalysts, comparatively.

show abstract

Section: Resultsmentioning

confidence: 99%

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Al-Hussein

Adam

2020

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…2B, the peak at 1364 cm À1 is attributed to the stretching vibration of Ti-O, while the broad band in the range 500-700 cm À1 resulted from the overlapping of Ti-O and Fe-O peaks. 39 For Fe 3 O 4 @-TiO 2 /PPY nanocomposite (Fig. 2C), the peak at 3429 cm À1 is due to the vibration of N-H, and the peaks at 1349 and 1614 cm À1 are induced by C-N and C]C on the pyrrole ring, respectively.…”

Section: Resultsmentioning

confidence: 96%

Rational design of a polypyrrole-based competent bifunctional magnetic nanocatalyst

2019

View full text Add to dashboard Cite

show abstract

“…Compared with the diffuse structure and the shell-core structure, the environmental stability and thermal stability of the core-shell structure magnetic complex were improved. At the same time, this structure can prevent Nano-Fe 3 O 4 from contacting with air and other substances, which can avoid its core being oxidized and corroded [102]. Compared with the sandwich structure, the core-shell structure magnetic complex was easier to prepare and the surface modification of Nano-Fe 3 O 4 can be completed by a one-step method [103], which produced a superparamagnetic product and easier to be separated.…”

Section: Structure Of Nano-fe3o4 Composite Materialsmentioning

confidence: 99%

Preparation and Potential Applications of Super Paramagnetic Nano-Fe3O4

et al. 2018

View full text Add to dashboard Cite

Ferroferric oxide nanoparticle (denoted as Nano-Fe 3 O 4 ) has low toxicity and is biocompatible, with a small particle size and a relatively high surface area. It has a wide range of applications in many fields such as biology, chemistry, environmental science and medicine. Because of its superparamagnetic properties, easy modification and function, it has become an important material for addressing a number of specific tasks. For example, it includes targeted drug delivery nuclear magnetic resonance (NMR) imaging in biomedical applications and in environmental remediation of pollutants. Few articles describe the preparation and modification of Nano-Fe 3 O 4 in detail. We present an evaluation of preparation methodologies, as the quality of material produced plays an important role in its successful application. For example, with modification of Nano-Fe 3 O 4 , the surface activation energy is reduced and good dispersion is obtained.

show abstract

Novel method for synthesis of Fe 3 O 4 @TiO 2 core/shell nanoparticles

Cited by 110 publications

References 51 publications

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Catalytic evaluation of copper (II)N‐salicylidene‐amino acid Schiff base in the various catalytic processes

Rational design of a polypyrrole-based competent bifunctional magnetic nanocatalyst

Preparation and Potential Applications of Super Paramagnetic Nano-Fe3O4

Contact Info

Product

Resources

About