Preparation of Iron Oxide Nanoparticles by a Pyrosol Technique

2007 ◽  
Vol 353-358 ◽  
pp. 2175-2178 ◽  
Author(s):  
W. Thongsuwan ◽  
Aukkaravittayapun Suparerk ◽  
Pisith Singjai
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Nitrate Solution ◽  
Precursor Solution ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Air Stream ◽  
Diffraction Patterns ◽  
Microscopy Images ◽  
Good Agreement

Iron oxide nanoparticles were prepared from an iron nitrate solution by a pyrosol technique. The precursor solution was atomized by a mist generator in order to form an aerosol which was brought into a tube furnace by a controlled flowing air stream. The pyrolysis of the aerosol was occurred to form the particles inside the furnace at 350 °C. Scanning electron microscopy images have shown that a mean diameter of the particles is in good agreement with the third root of the precursor concentration. X-ray diffraction patterns have revealed that the main peaks from the samples are corresponding to the α-Fe2O3 phase.

scholarly journals Analysis of Organochlorine Pesticides in Drinking Water and their Degradation by Synthesized Iron oxide Nanoparticles

2020 ◽  
Vol 32 (5) ◽  
pp. 1177-1182
Author(s):  
Bharti ◽  
J.S. Jangwan ◽  
Amrish Kumar ◽  
Vivek Kumar
Keyword(s):  
Drinking Water ◽  
Iron Oxide ◽  
Organochlorine Pesticides ◽  
Iron Oxide Nanoparticles ◽  
Precipitation Method ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Detection Analysis ◽  
Diffraction Patterns ◽  
Co Precipitation

This study reports the analysis of drinking water sources of river Krishni catchment, contaminated by organochlorine pesticides. Iron oxide nanoparticles had been synthesized through co-precipitation method and utilized for the degradation of organochlorine pesticides using advanced oxidation processes. The sharp and narrow peaks of X-ray diffraction patterns revealed the crystalline nature of synthesized iron oxide nanoparticles having size less than 100 nm. The nanoparticles were also characterized using TEM, UV-Vis and IR spectral analysis. Liquid-liquid extraction and GC-MS were used for the detection analysis of pesticides. GC-MS technique was used for further quantitative analysis of 19 pesticides. The degradation analysis showed the maximum amount of degradation (up to 98.38 %) of organochlorine pesticides.

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.

Synthesis and Effect of Some Parameters through Reverse Micelles Route of Iron Oxide Nanoparticles

2009 ◽  
Vol 152-153 ◽  
pp. 205-208 ◽  
Author(s):  
H. Arabi ◽  
S. Nateghi ◽  
S. Sadeghi
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Reverse Micelles ◽  
Room Temperature ◽  
Molar Ratio ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Significant Difference ◽  
Vibration Sample Magnetometer

Iron oxide nanoparticles were synthesis by reverse micelle method. X-ray diffraction technique and vibration sample magnetometer were applied to characterize the produced samples at different conditions and parameters for synthesis route. There is no significant difference between samples prepared at 5°C and room temperature except a better crystalline at room temperature. The molar ratio of water to surfactant (w parameter) and concentration of the salt solution on size and magnetic properties of nanoparticles have been investigated. Increasing w leads to producing particles with larger size i.e. for w=16.83, 11.22, and 5.6, particles size are 15.22, 11.66 and 10.5 nm, respectively. The size of nanoparticles are in the range of 9 to 20 nanometers

scholarly journals Synthesis of a new magnetic adsorbent using green tea leaf extract and its application in phenol removal by RSM method

2021 ◽  
Author(s):  
Sayed Zia Mohammadi ◽  
Batoul Lashkari ◽  
Azita Khosravan
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Iron Concentration ◽  
Oxide Nanoparticles ◽  
Phenol Removal ◽  
X Ray Diffraction ◽  
Tea Leaves ◽  
X Ray ◽  
Tea Leaf ◽  
The Relationship

Abstract In this research, iron oxide nanoparticles were prepared by green synthesis and identified by scanning electron microscopy, X-ray diffraction, infrared spectroscopy, and vibrational magnetometer. The tea leaves extract was used as a reducing agent to synthesize iron oxide nanoparticles. The systematic study of the process was performed using Design Expert 10 software to determine the relationship between the four process variables, namely iron concentration, extract volume, time, and temperature effect. The square model was significant for the response variables. The iron oxide nanoparticles had super-magnetic properties. Then, iron oxide nanoparticles were used for magnetization of activated carbon (MAC). Finally, the MAC were used for phenol removing by response surface methodology (RSM) method. The results manifested that the generated MAC is quite effective in removing phenol. Various parameters such as pH, extraction time and adsorbent amount were optimized by the RSM method. The absorption of phenol was measured by using a spectrophotometer at a maximum wavelength of 510 nm. It was also indicated that phenol in an aqueous solution was removed up to 98%.

scholarly journals Synthesis and Antibacterial and Antibiofilm Activity of Iron Oxide Glycerol Nanoparticles Obtained by Coprecipitation Method

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Simona Liliana Iconaru ◽  
Alina Mihaela Prodan ◽  
Philippe Le Coustumer ◽  
Daniela Predoi
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Lattice Parameter ◽  
Coprecipitation Method ◽  
Oxide Nanoparticles ◽  
Antibiofilm Activity ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cubic Lattice ◽  
Antibacterial Studies

The glycerol iron oxide nanoparticles (GIO-NPs) were obtained by an adapted coprecipitation method. The X-ray diffraction (XRD) studies demonstrate that GIO-NPs were indexed into the spinel cubic lattice with a lattice parameter of 0.835 nm. The refinement of XRD spectra indicated that no other phases except maghemite were detected. The adsorption of glycerol on iron oxide nanoparticles was investigated by Fourier transform infrared (FTIR) spectroscopy. On the other hand, this work implicated the use of GIO-NPs in antibacterial studies. The results indicate that, in the case ofP. aeruginosa  1397biofilms, at concentrations from 0.01 mg/mL to 0.625 mg/mL, the glycerol iron oxide inhibits the ability of this strain to develop biofilms on the inert substratum.

scholarly journals Synthesis of Iron Oxide Nanoparticles Using Isobutanol

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Diana Kostyukova ◽  
Yong Hee Chung
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Ammonium Hydroxide ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Ferrous Chloride ◽  
X Ray ◽  
Superparamagnetic Properties

Iron oxide nanoparticles were synthesized by precipitation in isobutanol with sodium hydroxide and ammonium hydroxide. The isobutanol played a role of a surfactant in the synthesis. The nanoparticles were calcined for 100 min to 5 hours in the range of 300 to 600°C. The characterization of the samples by FTIR (Fourier-transform infrared) and XRD (X-ray diffraction) confirmed the formation ofγ-Fe2O3(maghemite) from Fe3O4(magnetite) at calcination at 300°C. The morphology and particle size were studied by SEM (scanning electron microscope). Nanoparticles in the range of 11–22 nm prepared at 0.09 M of ferrous chloride exhibited superparamagnetic properties. Nanoparticles synthesized with ferrous chloride and ammonium hydroxide at 75°C and calcined at 530°C for 2 h wereα-Fe2O3(hematite).

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 Study of the influence of autoclave sterilization on the properties of citrate functionalized iron oxide nanoparticles

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Thomas Girardet ◽  
Amel Cherraj ◽  
Astrid Pinzano ◽  
Christel Henrionnet ◽  
Franck Cleymand ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Magnetic Measurements ◽  
Superparamagnetic Iron Oxide ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Water Dispersible ◽  
Before And After ◽  
One Step

Abstract Superparamagnetic Iron Oxide Nanoparticles (SPIONs) are widely used in various areas of the biomedical field: for diagnosis (Magnetic Resonance Imaging), for therapeutic applications (hyperthermia, nanovectorization). These applications require a good stability in water and no aggregation of SPIONs, with well-controlled physicochemical and magnetic properties. In this work, SPIONs functionalized by citrate ligands are synthesized in a one-step process with the aim of producing stable water-dispersible nanoparticles with a well-crystallized spinel structure. Microwave technology is implemented to achieve this objective given the ease, speed and reproducibility of the method. For their future use in biomedical applications, the sterilization of these SPIONs are essential by an autoclave treatment. The influence of this treatment on the physicochemical and magnetic properties of the SPIONs is determined by a systematic characterization before and after sterilization by Transmission Electronic Microscopy, Dynamic Light Scattering, X-ray Diffraction, Fourier Transformed Infra-Red, ThermoGravimetric Analysis and magnetic measurements.

scholarly journals Signature of antiphase boundaries in iron oxide nanoparticles

2021 ◽  
Vol 54 (6) ◽  
Author(s):  
Tobias Köhler ◽  
Artem Feoktystov ◽  
Oleg Petracic ◽  
Nileena Nandakumaran ◽  
Antonio Cervellino ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Powder Diffraction ◽  
Magnetic Moments ◽  
Reference Value ◽  
Oxide Nanoparticles ◽  
Planar Lattice ◽  
Antiphase Boundaries ◽  
Diffraction Patterns ◽  
The Fourier Transform

Iron oxide nanoparticles find a wide variety of applications, including targeted drug delivery and hyperthermia in advanced cancer treatment methods. An important property of these particles is their maximum net magnetization, which has been repeatedly reported to be drastically lower than the bulk reference value. Previous studies have shown that planar lattice defects known as antiphase boundaries (APBs) have an important influence on the particle magnetization. The influence of APBs on the atomic spin structure of nanoparticles with the γ-Fe2O3 composition is examined via Monte Carlo simulations, explicitly considering dipole–dipole interactions between the magnetic moments that have previously only been approximated. For a single APB passing through the particle centre, a reduction in the magnetization of 3.9% (for 9 nm particles) to 7.9% (for 5 nm particles) is found in saturation fields of 1.5 T compared with a particle without this defect. Additionally, on the basis of Debye scattering equation simulations, the influence of APBs on X-ray powder diffraction patterns is shown. The Fourier transform of the APB peak profile is developed to be used in a whole powder pattern modelling approach to determine the presence of APBs and quantify them by fits to powder diffraction patterns. This is demonstrated on experimental data, where it could be shown that the number of APBs is related to the observed reduction in magnetization.

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