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Liu, Z. L.; Liu, Y. J.; Yao, K.L.; Ding, Zhi; Tao, Juan; Wang, X.

doi:10.1023/a:1021231527095

Cited by 127 publications

(34 citation statements)

References 6 publications

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“…This result revealed that there is no iterance of metal ions (Mn or Fe) in ZnO structure. In addition, the obtained lattice parameters for ZnO particles are in good accordance with literature [28][29][30]. Figure 3a-c illustrates the FESEM micrographs of the samples.…”

Section: Resultssupporting

confidence: 86%

Effect of ZnO on Structural and Magnetic Properties of MnFe2O4/ZnO Nanocomposite

Aslibeiki

Kameli

2015

J Supercond Nov Magn

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In this paper, we reported a comparative study of structural and magnetic properties of MnFe 2 O 4 /ZnO nanocomposite and MnFe 2 O 4 nanoparticles. The samples were prepared with a simple thermal decomposition method and then were characterized through thermogravimetry (TG) and differential thermal analysis (DTA), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) images, and vibrating sample magnetometry (VSM) at different temperatures. TG curves showed that pure samples can be obtained at 400 • C. XRD pattern of composite sample confirmed coexistence of crystalline cubic spinel Mn-ferrite and hexagonal zinc oxide phases. The estimated lattice parameter of MnFe 2 O 4 nanoparticles, a = 8.39Å, was smaller than bulk value (a = 8.51Å) due to finite size effects. The magnetization of both samples followed the Bloch law with almost the same Bloch constant of β ∼ 5 × 10 −5 (K −3/2 ) showing similar spin wave excitation mechanisms in the samples. However, the VSM measurements indicated that increase of coercivity (H c ) of composite sample with decreasing the temperature is faster when compared with pure ferrite.

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Section: Resultssupporting

confidence: 86%

Effect of ZnO on Structural and Magnetic Properties of MnFe2O4/ZnO Nanocomposite

Aslibeiki

Kameli

2015

J Supercond Nov Magn

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“…Then 20 mL of NH 4 OH 25% was slowly injected into the mixture of FeCl 3 and FeCl 2 under vigorous stirring at temperature 60-70 0 C. Before the reaction, N 2 gas was injected through the reaction medium to prevent possible oxidation. After precipitation, the Fe 3 O 4 particles were repeatedly washed and filtered before drying at room temperature [4]. (1)…”

Section: Preparation Of Magnetite Using a Homogenous Methodsmentioning

confidence: 99%

Deposition of Magnetite Nanoparticles in Activated Carbons and Preparation of Magnetic Activated Carbons

Kahani¹,

Hamadanian²,

Vandadi³

2007

AIP Conference Proceedings

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Abstract. Magnetic activated carbons (MACs) for gold recovery from alkaline cyanide solutions have been developed by mixing a magnetic precursor with a carbon source, and treating the mixture under controlled conditions. As would be expected, these activated carbons have high specific surface areas due to their microporous structure. In addition, the small particle size of the MACs produced allows rapid adsorption of gold in solution, and the magnetic character of these MACs enables recovery from suspension by magnetic separation.

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“…Magnetic Fe 3 O 4 nanoparticles were prepared by chemical co-precipitation method [26]. First, FeCl 3 (3.30 g) was dissolved in deionized water (80mL) followed by addition of polyethylene glycol (40mL, 10%, w/w) and of (NH 4 ) 2 Fe (SO 4 ) 2 (4.23 g) added in water solution under stirring.…”

Section: Preparation Of Fe 3 O 4 @Sio 2 Magnetic Nanoparticlesmentioning

confidence: 99%

Separation/Analysis of Congo Red by Using Poly (Ionic Liquid) Immobilized Magnetic Nanoparticles Magnetic Solid Phase Extraction Coupled with Fluorescence Spectrophotometry

Bakheet¹

2017

SJAC

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Magnetic solid phase extraction (MSPE) accompanied with fluorescence spectrophotometry using Poly (ionic liquid) immobilized magnetic nanoparticles (PIL-MNPs) as sorbent was introduced for Congo red analysis in food. Poly (1-vinyl-3-butylimidazolium) bromide immobilized (MNPs) were prepared through co-polymerization of 1-vinyl-3-hexylimidazolium-based ionic liquid and vinyl-modified magnetic particles. Some of different types of parameters, such as pH value, adsorption temperature and time, sample volume, eluent type, were studied. Under the optimum conditions, the preconcentration factor for AR was 27. The linear range, detection limit (DL), correlation coefficient (R) and relative standard deviation (RSD) were found to be 0.10-9.00µg/mL, 5.2µg/L, 0.9987 and 3.10% (n=3, c=4.00µg/mL). This method had been successfully applied to the separation / analysis of Congo red in real samples.

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Untitled

Cited by 127 publications

References 6 publications

Effect of ZnO on Structural and Magnetic Properties of MnFe2O4/ZnO Nanocomposite

Effect of ZnO on Structural and Magnetic Properties of MnFe2O4/ZnO Nanocomposite

Deposition of Magnetite Nanoparticles in Activated Carbons and Preparation of Magnetic Activated Carbons

Separation/Analysis of Congo Red by Using Poly (Ionic Liquid) Immobilized Magnetic Nanoparticles Magnetic Solid Phase Extraction Coupled with Fluorescence Spectrophotometry

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