DESIGNED STRUCTURE AND MAGNETIC CHARACTERISTIC STUDIES OF MAGNETIC IRON OXIDE (Fe3O4) NANOPARTICLES COATED BY POLYVINYL ALCOHOL AND POLYVINYL ALCOHOL-LINKED WITH GLUTARALDEHYDE

doi:10.7324/rjc.2017.1041906

Cited by 6 publications

(4 citation statements)

References 19 publications

(19 reference statements)

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“…The Cu ion in the Zn-ferrite crystal increases the constant rate of 0.10 mmol min -1 and the Cu-ferrite see a reaction rate of 0.18 mmol min -1 . This activity of Cu containing ferrites can be demonstrated by the redox pair Cu + /Cu 2+ at the surface [24][25][26][27][28][29] .…”

Section: Ferrites As Catalytically By Hydrogen Peroxidementioning

confidence: 98%

Preparation, Structure and Catalytic Activity of Simple Spinel as Nano-Copper-Zinc Ferrites in Industry Model

Awad¹,

El‐Maghraby²

2018

RJC

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The crystallized Cu1-xZnxFe2O4 ferrites nanocrystalline has been prepared at low-temperature combustion route to study as a novel friendly environmentally benign fuel. Five batches of spinel as Cux Zn1-xFe2O4 were synthesis by a self-combustion method using nitrates as salt. The phase composition, crystal intensity and the nanostructure characteristics were resolved by x-ray diffraction and scanning electron microscope can be observations. BET analysis to indemnification the specific surface area around 20-10 nm. The results show an announced decrease in the combustion temperature when Cu-and Zn-ferrites spinel are utilized as catalysts effect. The ferrites have tested catalytically in combustion reaction of hydrogen peroxide.

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Section: Ferrites As Catalytically By Hydrogen Peroxidementioning

confidence: 98%

Preparation, Structure and Catalytic Activity of Simple Spinel as Nano-Copper-Zinc Ferrites in Industry Model

Awad¹,

El‐Maghraby²

2018

RJC

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“…It can be seen that the crystal size of the PPS/PVA/Fe 3 O 4 nanocomposite decreased compared to that of PPS. The reason is attributed to the cross-linking of PVA and Fe 3 O 4 , which destroyed the regularity and mobility of PPS chains, resulting in smaller crystals and strongly magnetic properties [14,31].…”

Section: Structural Analysismentioning

confidence: 99%

“…PVA possesses water solubility, nontoxicity, high durability, porosity, biocompatibility, biodegradability, optical transparency, and great dielectric strength [28,29]. The solubility of PVA allows nanoparticles to be easily dispersed in an aqueous medium, preventing the aggregation of nanoparticles [27,30,31].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Application of Novel Ternary PPS/PVA/Fe3O4 Nanocomposite for Enhanced Visible Light Photocatalytic Degradation of Methylene Blue

Atashkadi,

Mohadesi,

Karimi

et al. 2023

J Clust Sci

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This study used a simple co-precipitation method to fabricate a novel polymer-based photocatalyst that displayed effective photocatalytic activity towards the degradation of methylene blue (MB) solution under visible light irradiation. Due to its excellent properties, intrinsic polarization, and asymmetric structure, polyphenylene sul de (PPS) was utilized in the magnetic ternary PPS/PVA/Fe 3 O 4 nanocomposite. The analytical techniques con rmed the desirable combination of the photo-initiated Fe 3 O 4 nanoparticles as the strong oxidizers with the high adsorption capacity of PPS and the binding and conductive effects of polyvinyl alcohol (PVA). Binary nanocomposites of PPS/Fe 3 O 4 and PVA/Fe 3 O 4 were also prepared to compare their photocatalytic activities with that of the PPS/PVA/Fe 3 O 4 sample.The optimum degradation occurred in PPS/PVA/Fe 3 O 4 , reaching 83% after 120 minutes. Its superior activity was attributed to the synergistic interactions, such as broader absorption of visible light, suppression of electron-hole pair recombination, and increment in the surface area of the mesoporous catalyst. Based on the effects of scavengers, it was concluded that hydroxyl radicals had a vital role in the photodegradation of methylene blue. Kinetically, the photocatalytic activity of PPS/PVA/Fe 3 O 4 followed the pseudo-rst-order kinetic model, which was about 3.9 and 3.1 times greater than those of PPS and PPS/Fe 3 O 4 , respectively. More speci cally, the superparamagnetic behavior of PPS/PVA/Fe 3 O 4 helped to be recovered with an external magnetic eld and showed good reusability and stability after four successive runs. The current work suggests that PPS-based photocatalysts can provide promising opportunities for the photocatalytic degradation of organic pollutants and opens up a new perspective on water treatment.

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“…Therefore, coating technology by using polymer, metal or non-metal, and the surfactant has been studied previously. 5,6 Oleic acid (OA) is a surfactant which is commonly employed to stabilize the magnetite nanoparticles. Oleic acid can form a strong chemical bond through the interaction of its carboxyl group with magnetite nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

SYNTHESIS AND CHARACTERIZATION OF MAGNETIC Fe3O4 NANOPARTICLES USING OLEIC ACID AS STABILIZING AGENT

Nalle¹,

Wahid²,

Wulandari³

et al. 2019

RJC

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Magnetic iron oxide nanoparticles (Fe3O4) provide multiple advantages for drug delivery application due to their inertness, non-toxicity, biocompatibility, and ease of detection as the diagnostic tool for contrast imaging in the human body. To protect against oxidation, preferably covalently bonded a surfactant for coating Fe3O4 is required. For this purpose, in the present study, oleic acid (OA) was applied to stabilize Fe3O4 magnetic nanoparticles via onepot-three-component reaction. Mild conditions as a well as simple reaction could be attributed to this method in producing Fe3O4-OA nanoparticles. The amount of oleic acid (OA) was studied to explore properties of the resulted nanoparticles. Infrared spectroscopy revealed that OA is chemisorbed via a carboxyl group onto the surface of the iron oxide nanoparticle and is coordinated symmetrically to the oxide atoms. Furthermore, there is a ligand exchange between -OH groups and -COO groups on the Fe3O4 nanoparticle surfaces. X-ray diffraction (XRD) spectra indicated that Fe3O4 phase was predominantly obtained beside small amount of γ-Fe2O3 phase. The average crystallite size of the synthesized Fe3O4 nanoparticles at different amount of OA was found in the range of 6.60 nm to 9.48 nm. Magnetic properties of the nanoparticles were determined by electron spin resonance (ESR). The gradient curve of ESR spectra revealed that Fe3O4 and OA-coated Fe3O4 nanoparticles possess significantly different magnetic properties.

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DESIGNED STRUCTURE AND MAGNETIC CHARACTERISTIC STUDIES OF MAGNETIC IRON OXIDE (Fe3O4) NANOPARTICLES COATED BY POLYVINYL ALCOHOL AND POLYVINYL ALCOHOL-LINKED WITH GLUTARALDEHYDE

Cited by 6 publications

References 19 publications

Preparation, Structure and Catalytic Activity of Simple Spinel as Nano-Copper-Zinc Ferrites in Industry Model

Preparation, Structure and Catalytic Activity of Simple Spinel as Nano-Copper-Zinc Ferrites in Industry Model

Preparation, Characterization, and Application of Novel Ternary PPS/PVA/Fe3O4 Nanocomposite for Enhanced Visible Light Photocatalytic Degradation of Methylene Blue

SYNTHESIS AND CHARACTERIZATION OF MAGNETIC Fe3O4 NANOPARTICLES USING OLEIC ACID AS STABILIZING AGENT

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