Synthesis and Characterization of PEG-Sr Hexaferrite by Sol–Gel Conversion

Baykal, A.; Durmuș, Z.; Toprak, Muhammet S.; Sözeri, H.

doi:10.1007/s10948-012-1548-7

Cited by 18 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values are 6460, 5190, and 4935 Oe with increasing MW of PEG by using high MW of PEG. The degrees of magnetism of each calcined sample were also close to results of work by Baykal et al [20].…”

Section: Tg Analysissupporting

confidence: 88%

A Comparative Study on Magnetostructural Properties of Barium Hexaferrite Powders Prepared by Polyethylene Glycol

Durmuș

2014

Journal of Nanomaterials

View full text Add to dashboard Cite

Nanocrystalline particles of barium hexaferrite were synthesized by a sol-gel combustion route using nitrate-citrate gels prepared from metal nitrates and citric acid solutions with Fe/Ba molar ratio 12. The present paper aims to study the effect of addition of polyethylene glycol (PEG) solutions with different molecular weights (MW: 400, 2000, and 10.000 g/mol) on magnetostructural properties of barium hexaferrite. The formation of the barium hexaferrite was inspected using X-ray diffraction (XRD) analysis, Fourier transform infrared (FT-IR) analysis, thermogravimetric (TGA) analysis, scanning electron microscopy (SEM) analysis and vibrating sample magnetometer (VSM) analysis for magnetic measurements.

show abstract

Section: Tg Analysissupporting

confidence: 88%

A Comparative Study on Magnetostructural Properties of Barium Hexaferrite Powders Prepared by Polyethylene Glycol

Durmuș

2014

Journal of Nanomaterials

View full text Add to dashboard Cite

show abstract

“…1. The absorption bands observed at around 420, 543, 584, and 654 cm −1 correspond to typical M-O [16][17][18][19][20] (Fig. 1a).…”

Section: Ft-ir Analysismentioning

confidence: 82%

Hydrothermal Synthesis of SrFe12O19 and Its Characterization

Baykal

Toprak

Durmuș

et al. 2012

J Supercond Nov Magn

Self Cite

View full text Add to dashboard Cite

We have synthesized strontium hexaferrite particles in an alkaline medium using a hydrothermal process at 180°C. Crystalline phase of samples were determined by XRD and spectroscopic, morphological, and magnetic investigation of the sample were FT-IR, SEM, and TG analysis, respectively. XRD analysis revealed few impurity phases in the as-made powder; upon calcinations, the material is converted to desired hexaferrite phase. As synthesized powder exhibits agglomerates with rather smooth facets, in the form of thick platelets. Upon calcination, all these structures were observed to transfer to rod-like structures. The As calcined sample has high specific saturation magnetization (M s ) values of 65 emu/g that is close to its theoretical value of 74.3 emu/g but the hydrothermally synthesized sample does not. This is in agreement with the observations from XRD analysis where few impurity phases observed in the as-made powder cause a weak magnetic response. Upon calcination, the material is converted to a desired hexaferrite phase with better magnetic properties.

show abstract

“…This NC can be synthesized with different structures by various methods such as sol-gel, polyol, solvothermal, hydrothermal, co-precipitation and ball milling [35][36][37][38]. Though advantageous, these strategies have drawbacks like energy overriding, higher temperature requirement and complicated apparatus.…”

Section: Introductionmentioning

confidence: 99%

MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism

Meena¹,

Anantharaju

Vidya³

et al. 2020

SN Appl. Sci.

View full text Add to dashboard Cite

Magnetically separable novel nano-MnFe 2 O 4 /ZrO 2 nanocomposite (NC) and MnFe 2 O 4 (MFO) samples were synthesized by an efficient solution combustion methodology. The structure, morphology and optical properties were characterized through powder X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy and UV-Vis spectroscopy. The photocatalytic activity of MnFe 2 O 4 /ZrO 2 nanocomposite was analysed for decolourization efficiency of methylene blue (MB) and textile dye wastewater under natural sunlight irradiation. The results demonstrated that the decolourization response of the MnFe 2 O 4 /ZrO 2 nanocomposite was 95% for MB and 59% for textile dye wastewater in 90 min. The photocatalytic performance of MnFe 2 O 4 /ZrO 2 was almost 1.4 times as high as pure MnFe 2 O 4 was ascribed to the synergic effect and interfacial interaction across MnFe 2 O 4 nanoparticle (NP) and ZrO 2 that leads to separation of electron-hole pairs efficiently and broadened light absorption of the composite (2.42 eV) compared to MnFe 2 O 4 (2.15 eV). The effective optimized parameters such as solution pH of 7, nanocomposite dosage of 60 mg and initial dye concentration of 20 ppm were studied on photocatalytic performance for the removal of MB dye. The magnetically separable MnFe 2 O 4 / ZrO 2 nanocomposite proved to be highly active and a stable catalyst in five successive photodecolourization cycles for an aqueous solution of MB dye under sunlight irradiation. Furthermore, the possible sunlight photocatalytic mechanism of the MnFe 2 O 4 /ZrO 2 nanocomposite was proposed. Due to its enhancement in photocatalytic activity, this NC has great potential towards the environmental remediation for practical photocatalytic application towards wastewater treatment.

show abstract

Synthesis and Characterization of PEG-Sr Hexaferrite by Sol–Gel Conversion

Cited by 18 publications

References 44 publications

A Comparative Study on Magnetostructural Properties of Barium Hexaferrite Powders Prepared by Polyethylene Glycol

A Comparative Study on Magnetostructural Properties of Barium Hexaferrite Powders Prepared by Polyethylene Glycol

Hydrothermal Synthesis of SrFe12O19 and Its Characterization

MnFe2O4/ZrO2 nanocomposite as an efficient magnetically separable photocatalyst with good response to sunlight: preparation, characterization and catalytic mechanism

Contact Info

Product

Resources

About