scholarly journals Synthesis of Oxide Iron Nanoparticles Using Laser Ablation for Possible Hyperthermia Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2099
Author(s):  
María J. Rivera-Chaverra ◽  
Elisabeth Restrepo-Parra ◽  
Carlos D. Acosta-Medina ◽  
Alexandre. Mello ◽  
Rogelio. Ospina
Keyword(s):  
Iron Oxide ◽  
Laser Ablation ◽  
Iron Oxide Nanoparticles ◽  
Laser Energy ◽  
Great Influence ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Heating Capacity ◽  
Nanoparticles Concentration

In this work, iron oxide nanoparticles produced using the laser ablation technique were studied in order to determine the characteristics of these nanoparticles as a function of the laser energy for the possible application in magnetic hyperthermia. Nanoparticles were obtained by varying the power of the laser considering values of 90, 173, 279 and 370 mJ. The morphology of these nanoparticles was determined using the dynamic light scattering (DLS) and scattering transmission electron microscopy (STEM) techniques, confirming that the size of the particles was in the order of nanometers. A great influence of the laser power on the particle size was also observed, caused by the competition between the energy and the temperature. The composition was determined by X-ray diffraction and Raman spectroscopy, showing the presence of magnetite, maghemite and hematite. The hyperthermia measurements showed that the temperature rise of the iron oxide nanoparticles was not greatly influenced by the energy change, the heating capacity of magnetic NPs is quantified by the specific absorption rate (SAR), that tends to decrease with increasing energy, which indicates a dependence of these values on the nanoparticles concentration.

scholarly journals Phytosynthesis of Iron Oxide Nanoparticles using Juncus inflexus Shoot Extract

2021 ◽  
Vol 12 (3) ◽  
pp. 3790-3799
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Low Cost ◽  
Blue Dye ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Tem Analysis ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Polymorphic Composition

To elude the toxic effects of chemically synthesized nanoparticles, the phytochemically synthesized nanoparticles may provide a better alternative. For the first time, an aqueous extract of Juncus inflexus shoot with FeCl3.6H2O was used for the phytosynthesis of iron oxide nanoparticles (FeONPs). As-synthesized FeONPs were characterized by UV-Vis spectroscopy, Transmission electron microscopy (TEM), Dynamic light scattering (DLS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). FeONPs showed UV-vis absorption spectra between 300-400 nm, whereas TEM analysis confirmed the particle sizes of 40-60 nm with aggregation. XRD is confirming the polymorphic composition of Fe3O4, α-Fe2O3, and Fe0 nanoparticles. Furthermore, FTIR analysis presenting the most probable mechanism for the synthesis of FeONPs. This multiphase FeONPs was applied for the decolorization of methylene blue dye (>83%). Phytosynthesized FeONPs have the benefits of low cost, no toxicity, sustainable, and eco-friendly technology so that they may be used as adsorbent/catalyst for remediation of toxic dyes in an aqueous medium.

scholarly journals Green synthesis of iron oxide nanoparticles using Platanus orientalis leaf extract for antifungal activity

2019 ◽  
Vol 8 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Henam Sylvia Devi ◽  
Muzaffar Ahmad Boda ◽  
Mohammad Ashraf Shah ◽  
Shazia Parveen ◽  
Abdul Hamid Wani
Keyword(s):  
Electron Microscopy ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Leaf Extract ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Platanus Orientalis ◽  
Oxide Particles

Abstract In this report, aqueous phase green synthesis of iron oxide nanoparticle utilizing Platanus orientalis is elucidated for the first time. The phytoconstituents of the P. orientalis leaf extract serve a dual role as reducing and capping agent during the fabrication of iron oxide nanoparticles. The role of the leaf extract in the synthesis of iron oxide has been briefly demonstrated in this work. The tailored iron oxide particles were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray analysis, infrared spectroscopy, ultraviolet-visible spectroscopy, and dynamic light scattering technique. Nonetheless, X-ray diffraction pattern reveals the mixed phase nature of the ensuing iron oxide, i.e. α-Fe2O3 and γ-Fe2O3. The spherical oxide particles have an average diameter of 38 nm as determined from transmission electron microscopy. Infrared spectroscopy results confirmed the stabilization of iron oxide nanoparticles by the phytochemicals present in the leaf extract. Iron oxide nanoparticles show significant antifungal activity against Aspergillus niger and Mucor piriformis, employed as model fungi, but found to be more active toward M. piriformis.

Green Synthesis of Spinel Magnetite Iron Oxide Nanoparticles

2014 ◽  
Vol 1051 ◽  
pp. 39-42 ◽  
Author(s):  
R. Yuvakkumar ◽  
S.I. Hong
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Spinel Phase ◽  
Chelating Agent ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Ir Studies ◽  
Xrd Study ◽  
Transmission Electron ◽  
Waste Extract

Spinel magnetite Fe3O4nanoparticles were synthesized using rambutan peel waste extract as a green ligation and chelating agent. The green synthesized nanoparticles were characterized employing X-ray diffraction (XRD), Raman spectroscopy, FTIR spectroscopy and transmission electron microscopy (TEM) studies. The XRD study revealed spinel phase hda a magnetite structure. The formation of iron oxide nanoparticles using rambutan extract was confirmed employing IR studies. XRD, FTIR and Raman spectrum analyses all supports the synthesis of Fe3O4nanoparticles. The TEM revealed the spinel morphology of the biosynthesized nanoparticles with 200 nm.

Preparation and Characterization of Ultrafine Monodisperse Iron Oxide Nanoparticles by Solvothermal Method

2015 ◽  
Vol 748 ◽  
pp. 93-96
Author(s):  
Cheng Mei Liu ◽  
Yu Xia Zhao ◽  
Jin Dong ◽  
Lu Hai Li ◽  
Yen Wei ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Solvothermal Method ◽  
Physical Property Measurement System ◽  
Thermo Gravimetric Analysis ◽  
Physical Property ◽  
Oxide Nanoparticles ◽  
Gravimetric Analysis ◽  
Transmission Electron ◽  
Different Diameters

Using iron-oleate complex as a precursor, oleic acid as a stabilizer and 1-octadecene as a reductant, uniform-sized and highly monodisperse iron oxide nanoparitcles with different diameters were successfully synthesized via solvothermal method by changing reaction time. Transmission electron microscope (TEM), thermo-gravimetric analysis (TGA), fourier transform infrared spectroscopy (FT-IR), physical property measurement system (PPMS) and dynamic light scattering (DLS) was used to characterize obtained iron oxide nanoparticles. These results indicated that iron oxide nanoparitcles with the diameter ranging from 4 to 8 nm can be controllably synthesized.

Synthesis of Iron Oxide Nanoparticles by Different Methods and Study of their Properties

2015 ◽  
Vol 230 ◽  
pp. 108-113 ◽  
Author(s):  
O.V. Yelenich ◽  
S.O. Solopan ◽  
T.V. Kolodiazhnyi ◽  
Jean Marc Greneche ◽  
Anatolii G. Belous
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Zero Field ◽  
X Ray Diffraction ◽  
Magnetic Studies ◽  
Brij 35 ◽  
Cryochemical Synthesis ◽  
Specific Loss Power ◽  
Triton X

In this work, iron oxide nanoparticles have been synthesized by precipitation in diethylene glycol, by cryochemical synthesis, in microemulsions using surfactants Triton X-100, Brij-35 and CTAB. Comparative spectroscopic, thermal, X-ray diffraction, 57Fe zero-field Mössbauer and magnetic studies of the synthesized nanoparticles have been carried out. Magnetic fluids prepared from synthesized nanopowders have been characterized by calorimetric measurements of specific loss power (SLP).

scholarly journals Preparation and Characterization of Polyethylene Glycol Coating Iron Oxide Nanoparticles for Curcumin Delivery

2019 ◽  
Vol 31 (8) ◽  
pp. 1719-1723
Author(s):  
Nguyen Thi Thanh Thuy ◽  
Le Duc Anh ◽  
Nguyen Huu Tri ◽  
Cu Van Hoang ◽  
Nguyen Anh Nhut
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Sonication Time ◽  
X Ray Diffraction ◽  
Target Drug Delivery ◽  
Target Drug ◽  
Fe3o4 Nps ◽  
Average Size

The PEG-coated iron oxide nanoparticles (Fe3O4 NPs-PEG) was synthesized by coprecipitation and ultrasonication method. X-ray diffraction results exhibited that the average size of Fe3O4 NPs-PEG was 19.10 nm, which was further confirmed in TEM imaging. In addition, sonication time and curcumin concentration were studied to evaluate the efficiency of loading curcumin onto Fe3O4 NPs-PEG. Further, statistical optimization using response surface methodology (RSM) has shown curcumin concentration (0,01% w/v) and sonication time (21 min) for maximal curcumin loading (0.37 mg/g). Along with the magnetization studies, the immobilization of curcumin onto the Fe3O4 NPs-PEG was characterized by UV, FTIR and SEM. The results showed that the curcumin loaded PEG coated iron oxide nanoparticles could potentially be used for magnetically target drug delivery.

Iron Oxide Nanoparticles Obtained from a Fe(II) - Chitosan Polymer Film

2010 ◽  
Vol 644 ◽  
pp. 51-55 ◽  
Author(s):  
Juan Fco Luna Martínez ◽  
E. Reyes-Melo ◽  
Virgilio González-González ◽  
A. Torres-Castro ◽  
Carlos Guerrero-Salazar ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Composite Film ◽  
Polymer Film ◽  
Iron Oxide Nanoparticles ◽  
Magnetic Behavior ◽  
Nanostructured Material ◽  
Oxide Nanoparticles ◽  
Transmission Electron ◽  
Alkaline Conditions

In this work, iron oxide nanoparticles (~5 nm) embedded in a chitosan polymer film, were synthesized. In order to obtain this nanostructured material, firstly a homogenous film of Fe(II)-chitosan was prepared. The resulting composite film has a thickness of ~140μm. Iron oxide nanoparticles were in-situ synthesized by treating the composite film with H2O2 under alkaline conditions. The morphological analysis by Transmission Electron Microscopy (TEM) shows the nanoparticles were embedded and stabilized in chitosan polymer film. The magnetic behavior was studied by magnetization measurements. The magnetization curves at room temperature showed that iron oxide nanoparticles have a superparamagnetic behavior.

scholarly journals Enhancing the Magnetic Heating Capacity of Iron Oxide Nanoparticles through Their Postproduction Incorporation into Iron Oxide-Gold Nanocomposites

2017 ◽  
Vol 2017 (18) ◽  
pp. 2385-2385
Author(s):  
Gavin Bell ◽  
Lara K. Bogart ◽  
Paul Southern ◽  
Malini Olivo ◽  
Quentin A. Pankhurst ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Heating Capacity ◽  
Magnetic Heating ◽  
Gold Nanocomposites
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