2020
DOI: 10.1155/2020/4783612
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Synthesis of Silica-Coated Fe3O4 Nanoparticles by Microemulsion Method: Characterization and Evaluation of Antimicrobial Activity

Abstract: Magnetite and silica-coated magnetite (Fe3O4) nanoparticles (NPs) were synthesized by water-in-oil (W/O) microemulsion method from hydrated ferric nitrate, ferrous sulfate precursors and ammonia a precipitating agent with the assistance of Tween-80 and SDS surfactants. The synthesized materials were characterized by X-ray diffraction, scanning electron microscopy, thermal analyzer, and infrared spectroscopy. X-ray diffraction pattern of Fe3O4 showed that particles were phase pure with a cubic inverse spinel st… Show more

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Cited by 113 publications
(47 citation statements)
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“…2 c). The absorption band at 956 cm −1 is assigned to the asymmetric bending and stretching vibration modes of the surface silanol groups (Si-OH) [41] , [42] . The broad band from 3100 to 3600 cm −1 corresponds to the OH stretching modes of Si-OH groups and H 2 O and the weak band 1640 cm −1 is due to the OH bending vibration in water.…”
Section: Resultsmentioning
confidence: 99%
“…2 c). The absorption band at 956 cm −1 is assigned to the asymmetric bending and stretching vibration modes of the surface silanol groups (Si-OH) [41] , [42] . The broad band from 3100 to 3600 cm −1 corresponds to the OH stretching modes of Si-OH groups and H 2 O and the weak band 1640 cm −1 is due to the OH bending vibration in water.…”
Section: Resultsmentioning
confidence: 99%
“…There are several metal oxide NPs synthesized by green technology such as TiO 2 [ 16 ], Sm 2 O 3 [ 17 ], Cr 2 O 3 [ 18 ], NiO [ 19 ], CdO [ 20 ], Eu 2 O 3 [ 21 ], SnO 2 [ 22 ], CuO [ 23 ], Fe 3 O 4 [ 24 ] and ZnO [ 25 ]. Of these, zinc oxide nanoparticles (ZnO NPs) owe its unique physical and chemical properties which include adsorption of radiation, large excitation binding energy (60 meV), higher stability, wide band gap (∼3.37 eV), electrochemical coupling coefficient, n-type semiconductivity, high rate of chemical reaction in presence of catalyst, inexpensive luminescent material non-toxic etc.…”
Section: Introductionmentioning
confidence: 99%
“…Of these three methods, the chemical method is most preferred due to their easiness, less time taking and requirement of less expensive instrument. By means of chemical routes, IONPs have been successfully synthesized by co-precipitation method [19], solvothermal method [27] microemulsion method [28], sol-gel method [29], chemical vapor deposition method [30] and sonochemical method [23,31]. However, when it comes to the requirement of an amorphous nanoparticles with a better control of the morphology then sonochemical is the preferred method [32].…”
Section: Introductionmentioning
confidence: 99%