Direct thermal decomposition synthesis and characterization of hematite (α-Fe2O3) nanoparticles

Darezereshki, Esmaeel; Bakhtiari, Fereshteh; Alizadeh, Mostafa; Vakylabad, Ali Behrad; Ranjbar, Mohammad

doi:10.1016/j.mssp.2011.09.009

Cited by 82 publications

(27 citation statements)

References 23 publications

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“…This was influenced by impurities in the oven and might also be affected by ethylene glycol containing O2. Since ethylene glycol has the chemical formula C2H6O2, it can increase the oxygen [12] 020038-4 The results of the FTIR analysis showed that the iron oxide (Fe2O3) sintered for 1 hour in section 1 had the highest peak of 3365.78 with an intensity of 56.521and there was N-H group. In section II, the highest peak was 931.62 with an intensity of 45.037, and there was CH2 group.…”

Section: -3mentioning

confidence: 99%

Phase identification and morphology study of hematite (Fe2O3) with sintering time varitions

Yazirin¹,

Puspitasari²,

Sasongko³

et al. 2017

AIP Conference Proceedings

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Abstract. Iron oxide has been the interest of many studies due to its applications in various scientific and industrial fields including in environment, corrosion, soil science, and exhaust emissions. Iron oxide (Fe2O3) has potential applications in catalytic reactions in electronic devices such as semiconductors, paint formulations, and lithium rechargeable batteries. Fe2O3 can be synthesized through the process of stirring, decomposition of organic iron, sol-gel, combustion, and evaporating solvents. Most of the methods used involve several steps and take a long time. The aim of this research was to investigate the phase and morphology characterization of iron oxide (Fe2O3) powder with solvent ethylene glycol after being sintered for 1 hour, 2 hours and 3 hours. The characterization tools utilized were XRD, SEM-EDX, and FTIR. The results of XRD analysis showed that the Fe2O3 sintered for 1 hour had the smallest crystallite size with a diameter of 21.05 nm. In the XRD test, the beam of X-ray was shot directly at the grain being tested. The results of SEM analysis showed thatthe Fe2O3 sintered for 1 hour produced the best result due to its crystallite size of 12.36 nm and hada shape of homogeneous nanosphere; the duration of sintering indeed had a great influence on the grain size of iron oxide (Fe2O3). In addition, the results of the elemental composition analysis indicate that the longer the sintering process, the higher the concentration of O but the lower the Fe.

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Section: -3mentioning

confidence: 99%

Phase identification and morphology study of hematite (Fe2O3) with sintering time varitions

Yazirin¹,

Puspitasari²,

Sasongko³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

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“…The NH 3 .H 2 O solution (2 M) was dropped to this solution with vigorous stirring at room temperature for 2 h [16]. The brown precipi-tate was then collected by filtration and rinsed three times with deionized water and ethanol.…”

Section: Synthesis Of Nickel Oxide and Hematite Nanoparticlesmentioning

confidence: 99%

“…The average size of NiO and Fe 2 O 3 NPs was calculated using the Scherrer formula as described elsewhere [9,16,19]. The average size for nickel oxide and hematite nanoparticles was: 23 nm and 33 nm, respectively.…”

Section: Xrd Analysis Of Nickel Oxide and Hematite Nanoparticlesmentioning

confidence: 99%

Influence of nickel and hematite nanoparticle powder on the production of biohydrogen from complex distillery wastewater in batch fermentation

Gadhe

Sonawane

Varma

2015

International Journal of Hydrogen Energy

102

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“…It is known that the shape, size and distribution of the nanoparticles are very important variables in the study of nanotechnologies and consequently in their thermo-physical characterization (Colombo et al 2012;Darezereshki et al 2012;Wheeler et al 2012). An analysis of these variables was obtained using scanning electron microscopy (SEM).…”

Section: Characterizationmentioning

confidence: 99%

Magnetorheological behaviour of propylene glycol-based hematite nanofluids

et al. 2015

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The study of nanofluids represents an innovative research area with remarkable development. Properties of ferric magnetic nanofluids, also denoted as ferrofluids, under the influence of an external magnetic field have attracted increasing attention. A set-up for performing rheological and magnetorheological tests of propylene glycol-based hematite (α-Fe 2 0 3 ) nanofluids is presented. The nanoparticle concentration dependence of the magnetorheological properties of this nanofluid was analysed at 303.15 K, ranging from 0.2 to 6.18 vol%, while external magnetic fields up to 0.7 T were applied. The rheological and magnetorheological experiments were performed using a rotational Physica MCR 101 rheometer, (Anton Paar), which is equipped with a magnetorheological device (MRD 170/1T) to control the magnetic flux density. A detailed study about the thixotropic behaviour of the samples as well as viscosity curves of magnetization and demagnetization responses, an analysis of the fractal dimension of the aggregates and conclusions about the magnetic field effect on the size of formed aggregates as a function of concentration has been developed in this work. Rheological tests show that the nanofluid studied presents non-Newtonian shear thinning, thixotropic and viscoelastic behaviour. Finally, the magnetic saturation of the material has been studied.

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Direct thermal decomposition synthesis and characterization of hematite (α-Fe2O3) nanoparticles

Cited by 82 publications

References 23 publications

Phase identification and morphology study of hematite (Fe2O3) with sintering time varitions

Phase identification and morphology study of hematite (Fe2O3) with sintering time varitions

Influence of nickel and hematite nanoparticle powder on the production of biohydrogen from complex distillery wastewater in batch fermentation

Magnetorheological behaviour of propylene glycol-based hematite nanofluids

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