Single-phase γ-Fe2O3 nanoparticles synthesized by green ionothermal method and their magnetic characterization

Sabbaghan, Maryam; Sofalgar, Pegah

doi:10.1016/j.ceramint.2016.07.172

Cited by 25 publications

(13 citation statements)

References 30 publications

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“…In addition, they can be a useful template for nanostructures synthesis . Until now, a range of products have been prepared in ILs, including preparation of inorganic substances like CuO, γ ‐Fe 2 O 3 and MgO . “Transition metal oxides nanostructures have been widely used due to their unique features such as high specific surface area, chemical stability and electrochemical activity at nanoscale with promising applications in applied science and technology” .…”

Section: Introductionmentioning

confidence: 99%

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Ezzatzadeh

Hossaini

2020

Applied Organom Chemis

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In this research a novel and efficient procedure for the preparation of phosphonate derivatives using the reaction of 2,4‐dihydroxyacetophenone, isopropenylacetylene, 2‐amino‐N‐alkyl benzamide, dialkyl acetylenedicarboxylates and trimethyl phosphite or triphenyl phosphite in the presence of reusable 2D ZnO/Fe3O4 nanocomposites in water at room temperature was investigated. The 2D ZnO/Fe3O4 nanocomposites were synthesized using ionic liquid [OMIM]Br as a stabilizer and soft template. In addition, the power of antioxidant for some prepared compounds was studied using trapping of radicals by DPPH and a ferric reduction activity potential experiment. As a result, compound 6f displayed a noteworthy power for trapping of free radicals and 6b exhibited excellent reducing power compared with standards (BHT and TBHQ). Moreover, the antimicrobial power of some prepared quinazolinone phosphonates was proved by employing the disk diffusion experiment on two kinds of bacteria, Gram‐positive and ‐negative bacteria. The obtained outcomes of disk diffusion test showed that these compounds prevented bacterial growth. Some advantages of this procedure are: short time of reaction, high yields of product and easy separation of catalyst and products.

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Section: Introductionmentioning

confidence: 99%

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Ezzatzadeh

Hossaini

2020

Applied Organom Chemis

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“…The IL used in this study was synthesized according to the procedure reported in the literature. [ 28 ] For measuring infrared spectroscopy and melting point, a Shimadzu IR‐460 spectrometer and Electrothermal 9100 apparatus are utilized respectively. BRUKER DRX‐400 AVANCE spectrometer is used for giving the 1 H, and 13 C‐NMR spectra at 400.1 and 100 MHz, respectively.…”

Section: Methodsmentioning

confidence: 99%

Ionic liquid promoted green synthesis of new pyridazino benzazepine derivatives: Evaluation of antioxidant activity

Dehbandi

Hossaini

Mirjafari

et al. 2020

Journal of Heterocyclic Chem

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In this research, we investigated preparation of pyridazino benzazepine derivatives in high yields via the domino and one-pot reaction of isatoic anhydride, N-methylimidazole, alkyl bromides, activated acetylenic compounds, and hydrazine in ionic liquid as green media at 80 C. Also, antioxidation property of some prepared pyridazino benzazepines due to having pyridazin and benzazepine core is investigated by employing of trapping diphenyl-picrylhydrazine radical and ability of ferric reduction experiment. Our procedure has a few benefits relative to reported method such as good rate of reaction, product with high efficiency, and simple separation of product from mixture of reaction.

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“…This indicates that OH ⋅ does not play an appreciable role in the photodecomposition process, and the main species responsible for the decomposition of MB are h + and O ⋅− 2 . So the mechanism of MB decomposition can be suggested as below [29,54,55]:…”

Section: Photocatalytic Decomposition Of Mbmentioning

confidence: 99%

“…Metal oxides such as Fe 2 O 3 can electronically modify the photocatalysts and have a dramatic effect on the reactivity of the system. The electron-hole separation and the electron transfer at the interface can be significantly affected by metal oxide modification [29,30]. The application of super-paramagnetic Fe 2 O 3 nanoparticles as photocatalysts for organic dye decomposition in wastewater looks very encouraging, due to their large surface area leading to large loading capacity, significant stability, cost-effective provision, and ecofriendly properties [31].…”

Section: Introductionmentioning

confidence: 99%

One-pot hydrothermal synthesis and characterization of magnetic nanocomposite of titania-deposited copper ferrite/ferrite oxide for photocatalytic decomposition of methylene blue dye

et al. 2019

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The pure titania (TiO 2) and the heterogeneous ternary magnetic nanocomposite of copper ferrite/ferrite oxide (CuFe 2 O 4 / Fe 2 O 3) deposited by titanium dioxide (TiO 2) were fabricated using a facile one-pot hydrothermal synthesis for the photocatalytic decomposition of methylene blue (MB) dye, under visible light. The nanocomposite was encoded as TCF in this work, where T stands for TiO 2 , C for CuFe 2 O 4 and F for Fe 2 O 3. Various techniques such as powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy, diffuse reflectance spectroscopy, nitrogen physisorption, and vibrational sample magnetometry (VSM) were used to characterize the prepared samples. The PXRD data showed that the samples had pure anatase structure and the average crystal size of anatase TiO 2 in the pure titania and ternary nanocomposite were calculated 147 Å and 135 Å, respectively. The nitrogen physisorption analysis data showed that the pore diameter was increased from 10.6 nm in pure titania to 16.0 nm in TCF. The pore volume was also increased from 0.316 in titania to 0.383 cm 3 /g in TCF sample. It also increased the typical magnitude of the mesopores' diameter and volume per weight but it reduced the specific surface area of the samples. The VSM analysis of the ternary nanocomposite showed a considerable magnetic property of the sample (1.99 emu/g), qualifying it as a paramagnetic material. The photocatalytic decomposition efficiency of MB reached 77% and 68% in the presence of pure titania and TCF ternary nanocomposite, after 240-min exposure by the visible light. Active species trapping experiments showed that the major active species responsible for the photodecomposition of MB in the presence of TCF are O ⋅− 2 radicals and holes (h +).

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Single-phase γ-Fe2O3 nanoparticles synthesized by green ionothermal method and their magnetic characterization

Cited by 25 publications

References 30 publications

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Ionic liquid promoted green synthesis of new pyridazino benzazepine derivatives: Evaluation of antioxidant activity

One-pot hydrothermal synthesis and characterization of magnetic nanocomposite of titania-deposited copper ferrite/ferrite oxide for photocatalytic decomposition of methylene blue dye

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Single-phase γ-Fe2O3 nanoparticles synthesized by green ionothermal method and their magnetic characterization

Cited by 25 publications

References 30 publications

2D ZnO/Fe3O4 nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

2D ZnO/Fe3O4 nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

Ionic liquid promoted green synthesis of new pyridazino benzazepine derivatives: Evaluation of antioxidant activity

One-pot hydrothermal synthesis and characterization of magnetic nanocomposite of titania-deposited copper ferrite/ferrite oxide for photocatalytic decomposition of methylene blue dye

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2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

2D ZnO/Fe₃O₄ nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives